This schema defines named divisions of geological time.
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
title: BGS Geological Time Divisions
description: Geological time is divided into useful segments that are then further sub-divided. A well known example is the Jurassic, which is a Period, part of the (much longer) Mezosoic Era. The Jurassic Period is sub-divided into the Early, Mid and Late Jurassic Epochs. Some Eras are divided into sub-eras, similarly, Periods, Epochs and Ages can have sub-divisions.
creator: foaf.rdf
publisher: foaf.rdf
has top concept: Geological Time
type: ConceptScheme
created: 2011-02-10
modified: 2010-02-12

Hadean
type: Concept
has geochronology rank: nil
description: HADEAN
note: Informal name.
in scheme: Division
start: baseAR
end: nil
older division of same rank: nil
younger division of same rank: nil
sub divisions: A1
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bgs.ac.uk/discoveringGeology/time/Timechart/precambrian/home.html

Neoproterozoic III Period [Obsolete age term]
type: Concept
has geochronology rank: PERIOD
description: NEOPROTEROZOIC III [OBSOLETE AGE TERM: USE EDIACARAN]
note: Not on 2009 BGS Geological Time Chart; use AD Ediacaran Period.
in scheme: Division
start: baseFH
end: nil
older division of same rank: AC
younger division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/E
sub divisions: A3
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Palaeoarchaean Era
type: Concept
has geochronology rank: ERA
description: PALAEOARCHAEAN
note: nil
in scheme: Division
start: baseAM
end: baseAA
older division of same rank: AE
younger division of same rank: AM
sub divisions: AA
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Ectasian Period
type: Concept
has geochronology rank: PERIOD
description: ECTASIAN
note: nil
in scheme: Division
start: baseAI
end: baseAB
older division of same rank: AY
younger division of same rank: AI
sub divisions: AB
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cryogenian Period
type: Concept
has geochronology rank: PERIOD
description: CRYOGENIAN
note: nil
in scheme: Division
start: nil
end: baseAC
older division of same rank: AT
younger division of same rank: nil
sub divisions: AC
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Cryogenian

Ediacaran Period
type: Concept
has geochronology rank: PERIOD
description: EDIACARAN
note: nil
in scheme: Division
start: baseFH
end: nil
older division of same rank: AC
younger division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/E
sub divisions: AD
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Eoarchaean Era
type: Concept
has geochronology rank: ERA
description: EOARCHAEAN
note: nil
in scheme: Division
start: baseAA
end: baseAR
older division of same rank: nil
younger division of same rank: AA
sub divisions: AE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Rhyacian Period
type: Concept
has geochronology rank: PERIOD
description: RHYACIAN
note: nil
in scheme: Division
start: baseAO
end: baseAH
older division of same rank: AS
younger division of same rank: AO
sub divisions: AH
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Stenian Period
type: Concept
has geochronology rank: PERIOD
description: STENIAN
note: nil
in scheme: Division
start: baseAZ
end: baseAI
older division of same rank: AB
younger division of same rank: AT
sub divisions: AI
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Palaeoproterozoic Era
type: Concept
has geochronology rank: ERA
description: PALAEOPROTEROZOIC
note: nil
in scheme: Division
start: baseAX
end: baseAP
older division of same rank: AN
younger division of same rank: AX
sub divisions: AL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Mesoarchaean Era
type: Concept
has geochronology rank: ERA
description: MESOARCHAEAN
note: nil
in scheme: Division
start: baseAN
end: baseAM
older division of same rank: AA
younger division of same rank: AN
sub divisions: AM
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Neoarchaean Era
type: Concept
has geochronology rank: ERA
description: NEOARCHAEAN
note: nil
in scheme: Division
start: baseAP
end: baseAN
older division of same rank: AM
younger division of same rank: AL
sub divisions: AN
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Orosirian Period
type: Concept
has geochronology rank: PERIOD
description: OROSIRIAN
note: nil
in scheme: Division
start: baseAQ
end: baseAO
older division of same rank: AH
younger division of same rank: AQ
sub divisions: AO
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Proterozoic Eon
type: Concept
has geochronology rank: EON
description: PROTEROZOIC
note: nil
in scheme: Division
start: baseFH
end: baseAP
older division of same rank: AR
younger division of same rank: FH
sub divisions: AP
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bgs.ac.uk/discoveringGeology/time/Timechart/precambrian/home.html

Stratherian Period
type: Concept
has geochronology rank: PERIOD
description: STRATHERIAN
note: nil
in scheme: Division
start: baseAX
end: baseAQ
older division of same rank: AO
younger division of same rank: AY
sub divisions: AQ
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Archaean Eon
type: Concept
has geochronology rank: EON
description: ARCHAEAN
note: nil
in scheme: Division
start: baseAP
end: baseAR
older division of same rank: nil
younger division of same rank: AP
sub divisions: AR
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Archean
see also: http://www.bgs.ac.uk/discoveringGeology/time/Timechart/precambrian/home.html

Siderian Period
type: Concept
has geochronology rank: PERIOD
description: SIDERIAN
note: nil
in scheme: Division
start: baseAH
end: baseAP
older division of same rank: nil
younger division of same rank: AH
sub divisions: AS
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Tonian Period
type: Concept
has geochronology rank: PERIOD
description: TONIAN
note: nil
in scheme: Division
start: baseAC
end: baseAZ
older division of same rank: AI
younger division of same rank: AC
sub divisions: AT
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Mesoproterozoic Era
type: Concept
has geochronology rank: ERA
description: MESOPROTEROZOIC
note: nil
in scheme: Division
start: baseAZ
end: baseAX
older division of same rank: AL
younger division of same rank: AZ
sub divisions: AX
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Calymmian Period
type: Concept
has geochronology rank: PERIOD
description: CALYMMIAN
note: nil
in scheme: Division
start: baseAB
end: baseAX
older division of same rank: AQ
younger division of same rank: AB
sub divisions: AY
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Neoproterozoic Era
type: Concept
has geochronology rank: ERA
description: NEOPROTEROZOIC
note: nil
in scheme: Division
start: baseFH
end: baseAZ
older division of same rank: AX
younger division of same rank: RZ
sub divisions: AZ
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Bavelian Age
type: Concept
has geochronology rank: AGE
description: BAVELIAN
note: See RR/04/04.
in scheme: Division
start: nil
end: baseBB
older division of same rank: BM
younger division of same rank: nil
sub divisions: BB
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cromerian Complex Age
type: Concept
has geochronology rank: AGE
description: CROMERIAN COMPLEX
note: Contemporaneous with Cromerian; MIS 13-21; RR/04/04.
in scheme: Division
start: nil
end: nil
older division of same rank: nil
younger division of same rank: nil
sub divisions: BC
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Weichselian Age
type: Concept
has geochronology rank: AGE
description: WEICHSELIAN
note: Contemporaneous with Devensian; see RR/04/04.
in scheme: Division
start: baseQH
end: nil
older division of same rank: nil
younger division of same rank: QF
sub divisions: BD
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Eburonian Age
type: Concept
has geochronology rank: AGE
description: EBURONIAN
note: See RR/04/04.
in scheme: Division
start: baseBW
end: nil
older division of same rank: nil
younger division of same rank: BW
sub divisions: BE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Holsteinian Age
type: Concept
has geochronology rank: AGE
description: HOLSTEINIAN
note: Contemporaneous with Hoxnian; MIS 11; see RR/04/04.
in scheme: Division
start: nil
end: nil
older division of same rank: nil
younger division of same rank: nil
sub divisions: BH
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Eemian Age
type: Concept
has geochronology rank: AGE
description: EEMIAN
note: Contemporaneous with Ipswichian; MIS 5e; see RR/04/04.
in scheme: Division
start: nil
end: nil
older division of same rank: nil
younger division of same rank: nil
sub divisions: BI
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Elsterian Age
type: Concept
has geochronology rank: AGE
description: ELSTERIAN
note: Contemporaneous with Anglian; MIS 12; see RR/04/04.
in scheme: Division
start: nil
end: nil
older division of same rank: nil
younger division of same rank: nil
sub divisions: BL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Menapian Age
type: Concept
has geochronology rank: AGE
description: MENAPIAN
note: See RR/04/04.
in scheme: Division
start: baseBB
end: baseBM
older division of same rank: BW
younger division of same rank: BB
sub divisions: BM
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Praetiglian Age
type: Concept
has geochronology rank: AGE
description: PRAETIGLIAN
note: MIS 96-100; see RR/04/04.
in scheme: Division
start: nil
end: baseBP
older division of same rank: BR
younger division of same rank: nil
sub divisions: BP
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Reuverian Age
type: Concept
has geochronology rank: AGE
description: REUVERIAN
note: nil
in scheme: Division
start: baseBP
end: baseQ
older division of same rank: nil
younger division of same rank: BP
sub divisions: BR
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Reuverian C Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: REUVERIAN C
note: MIS 103; see RR/04/04.
in scheme: Division
start: baseBP
end: baseQ
older division of same rank: nil
younger division of same rank: nil
sub divisions: BRC
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Saalian Age
type: Concept
has geochronology rank: AGE
description: SAALIAN
note: Contemporaneous with Wolstonian; MIS 6-10; see RR/04/04.
in scheme: Division
start: nil
end: nil
older division of same rank: nil
younger division of same rank: nil
sub divisions: BS
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Tiglian Age
type: Concept
has geochronology rank: AGE
description: TIGLIAN
note: See RR/04/04.
in scheme: Division
start: nil
end: nil
older division of same rank: nil
younger division of same rank: nil
sub divisions: BT
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Tiglian A Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: TIGLIAN A
note: Contemporaneous with Ludhamian; see RR/04/04.
in scheme: Division
start: baseQT
end: nil
older division of same rank: nil
younger division of same rank: BTB
sub divisions: BTA
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Tiglian B Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: TIGLIAN B
note: Contemporaneous with Thurnian; see RR/04/04.
in scheme: Division
start: baseQN
end: baseQT
older division of same rank: BTA
younger division of same rank: BTC
sub divisions: BTB
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Tiglian C Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: TIGLIAN C
note: See RR/04/04.
in scheme: Division
start: nil
end: baseQN
older division of same rank: BTB
younger division of same rank: nil
sub divisions: BTC
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Waalian Age
type: Concept
has geochronology rank: AGE
description: WAALIAN
note: See RR/04/04.
in scheme: Division
start: baseBM
end: baseBW
older division of same rank: BE
younger division of same rank: BM
sub divisions: BW
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Carboniferous Period
type: Concept
has geochronology rank: PERIOD
description: CARBONIFEROUS
note: nil
in scheme: Division
start: baseP
end: baseC
older division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/D
younger division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/P
sub divisions: http://data.bgs.ac.uk/ref/Geochronology/DivisionList/C
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Carboniferous

Langsettian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: LANGSETTIAN
note: British regional sub-age; also known as Westphalian A.
in scheme: Division
start: nil
end: baseCW
older division of same rank: CY
younger division of same rank: nil
sub divisions: CA
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Westphalian A Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: WESTPHALIAN A
note: Not on 2009 BGS Geological Time Chart; British regional sub-age; use CA Langsettian.
in scheme: Division
start: nil
end: baseCW
older division of same rank: CY
younger division of same rank: nil
sub divisions: CAA
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Duckmantian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: DUCKMANTIAN
note: British regional sub-age; also known as Westphalian B.
in scheme: Division
start: nil
end: nil
older division of same rank: nil
younger division of same rank: nil
sub divisions: CB
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Westphalian B Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: WESTPHALIAN B
note: Not on 2009 BGS Geological Time Chart; British regional sub-age; use CB Duckmantian.
in scheme: Division
start: nil
end: nil
older division of same rank: nil
younger division of same rank: nil
sub divisions: CBB
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Bashkirian Age
type: Concept
has geochronology rank: AGE
description: BASHKIRIAN
note: nil
in scheme: Division
start: baseCPEM
end: baseCPE
older division of same rank: CSR
younger division of same rank: CMO
sub divisions: CBS
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Bolsovian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: BOLSOVIAN
note: British regional sub-age; also known as Westphalian C.
in scheme: Division
start: baseCD
end: nil
older division of same rank: nil
younger division of same rank: CD
sub divisions: CC
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Westphalian C Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: WESTPHALIAN C
note: Not on 2009 BGS Geological Time Chart; British regional sub-age; use CC Bolsovian.
in scheme: Division
start: baseCD
end: nil
older division of same rank: nil
younger division of same rank: CD
sub divisions: CCC
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Westphalian D Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: WESTPHALIAN D
note: British regional sub-age.
in scheme: Division
start: baseCS
end: baseCD
older division of same rank: nil
younger division of same rank: nil
sub divisions: CD
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Pendleian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: PENDLEIAN
note: British regional sub-age.
in scheme: Division
start: baseCG
end: baseCU
older division of same rank: nil
younger division of same rank: CG
sub divisions: CE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Courceyan Age
type: Concept
has geochronology rank: AGE
description: COURCEYAN
note: British regional age.
in scheme: Division
start: baseCI
end: baseC
older division of same rank: DA
younger division of same rank: CI
sub divisions: CF
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Arnsbergian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: ARNSBERGIAN
note: British regional sub-age.
in scheme: Division
start: baseCPE
end: baseCG
older division of same rank: CE
younger division of same rank: CH
sub divisions: CG
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Gzhelian Age
type: Concept
has geochronology rank: AGE
description: GZHELIAN
note: nil
in scheme: Division
start: baseP
end: baseCGZ
older division of same rank: CKS
younger division of same rank: PA
sub divisions: CGZ
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Chokierian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: CHOKIERIAN
note: British regional sub-age.
in scheme: Division
start: baseCO
end: baseCPE
older division of same rank: CG
younger division of same rank: CO
sub divisions: CH
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Chadian Age
type: Concept
has geochronology rank: AGE
description: CHADIAN
note: British regional age.
in scheme: Division
start: baseCJ
end: baseCI
older division of same rank: CF
younger division of same rank: CJ
sub divisions: CI
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Arundian Age
type: Concept
has geochronology rank: AGE
description: ARUNDIAN
note: British regional age.
in scheme: Division
start: baseCQ
end: baseCJ
older division of same rank: CI
younger division of same rank: CQ
sub divisions: CJ
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Kinderscoutian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: KINDERSCOUTIAN
note: British regional sub-age.
in scheme: Division
start: baseCZ
end: baseCK
older division of same rank: CO
younger division of same rank: CZ
sub divisions: CK
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Kasimovian Age
type: Concept
has geochronology rank: AGE
description: KASIMOVIAN
note: nil
in scheme: Division
start: baseCGZ
end: baseCPEL
older division of same rank: CMO
younger division of same rank: CGZ
sub divisions: CKS
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Dinantian Sub-period [Obsolete age term]
type: Concept
has geochronology rank: SUB-PERIOD
description: DINANTIAN [OBSOLETE AGE TERM: CLOSEST CURRENT TERM IS MISSISSIPPIAN]
note: Not on 2009 BGS Geological Time Chart; no direct replacement term.
in scheme: Division
start: baseCU
end: baseC
older division of same rank: nil
younger division of same rank: CU
sub divisions: CL
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Mississippian Sub-period
type: Concept
has geochronology rank: SUB-PERIOD
description: MISSISSIPPIAN
note: nil
in scheme: Division
start: baseCPE
end: baseC
older division of same rank: nil
younger division of same rank: CPE
sub divisions: CMI
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Early Mississippian Epoch
type: Concept
has geochronology rank: EPOCH
description: EARLY MISSISSIPPIAN
note: nil
in scheme: Division
start: baseCMIM
end: baseC
older division of same rank: DU
younger division of same rank: CMIM
sub divisions: CMIE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Late Mississippian Epoch
type: Concept
has geochronology rank: EPOCH
description: LATE MISSISSIPPIAN
note: nil
in scheme: Division
start: baseCPE
end: baseCU
older division of same rank: CMIM
younger division of same rank: CPEE
sub divisions: CMIL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Mid Mississippian Epoch
type: Concept
has geochronology rank: EPOCH
description: MID MISSISSIPPIAN
note: nil
in scheme: Division
start: baseCU
end: baseCMIM
older division of same rank: CMIE
younger division of same rank: CMIL
sub divisions: CMIM
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Moscovian Age
type: Concept
has geochronology rank: AGE
description: MOSCOVIAN
note: nil
in scheme: Division
start: baseCPEL
end: baseCPEM
older division of same rank: CBS
younger division of same rank: CKS
sub divisions: CMO
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Namurian Age
type: Concept
has geochronology rank: AGE
description: NAMURIAN
note: British regional age.
in scheme: Division
start: baseCW
end: baseCU
older division of same rank: nil
younger division of same rank: CW
sub divisions: CN
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Alportian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: ALPORTIAN
note: British regional sub-age.
in scheme: Division
start: baseCK
end: baseCO
older division of same rank: CH
younger division of same rank: CK
sub divisions: CO
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Pennsylvanian Sub-period
type: Concept
has geochronology rank: SUB-PERIOD
description: PENNSYLVANIAN
note: nil
in scheme: Division
start: baseP
end: baseCPE
older division of same rank: CMI
younger division of same rank: nil
sub divisions: CPE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Early Pennsylvanian Epoch
type: Concept
has geochronology rank: EPOCH
description: EARLY PENNSYLVANIAN
note: nil
in scheme: Division
start: baseCPEM
end: baseCPE
older division of same rank: CMIL
younger division of same rank: CPEM
sub divisions: CPEE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Late Pennsylvanian Epoch
type: Concept
has geochronology rank: EPOCH
description: LATE PENNSYLVANIAN
note: nil
in scheme: Division
start: baseP
end: baseCPEL
older division of same rank: CPEM
younger division of same rank: nil
sub divisions: CPEL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Mid Pennsylvanian Epoch
type: Concept
has geochronology rank: EPOCH
description: MID PENNSYLVANIAN
note: nil
in scheme: Division
start: baseCPEL
end: baseCPEM
older division of same rank: CPEE
younger division of same rank: CPEL
sub divisions: CPEM
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Holkerian Age
type: Concept
has geochronology rank: AGE
description: HOLKERIAN
note: British regional age.
in scheme: Division
start: baseCR
end: baseCQ
older division of same rank: CJ
younger division of same rank: CR
sub divisions: CQ
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Asbian Age
type: Concept
has geochronology rank: AGE
description: ASBIAN
note: British regional age.
in scheme: Division
start: baseCX
end: baseCR
older division of same rank: CQ
younger division of same rank: CX
sub divisions: CR
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Stephanian Age
type: Concept
has geochronology rank: AGE
description: STEPHANIAN
note: British regional age.
in scheme: Division
start: baseP
end: baseCS
older division of same rank: CW
younger division of same rank: PA
sub divisions: CS
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Serpukhovian Age
type: Concept
has geochronology rank: AGE
description: SERPUKHOVIAN
note: nil
in scheme: Division
start: baseCPE
end: baseCU
older division of same rank: nil
younger division of same rank: CBS
sub divisions: CSR
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Tournaisian Age
type: Concept
has geochronology rank: AGE
description: TOURNAISIAN
note: nil
in scheme: Division
start: baseCMIM
end: baseC
older division of same rank: DA
younger division of same rank: CV
sub divisions: CT
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Silesian Sub-period [Obsolete age term]
type: Concept
has geochronology rank: SUB-PERIOD
description: SILESIAN [OBSOLETE AGE TERM: CLOSEST CURRENT TERM IS PENNSYLVANIAN]
note: Not on 2009 BGS Geological Time Chart; no direct replacement term.
in scheme: Division
start: baseP
end: baseCU
older division of same rank: CL
younger division of same rank: nil
sub divisions: CU
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Visean Age
type: Concept
has geochronology rank: AGE
description: VISEAN
note: nil
in scheme: Division
start: baseCU
end: baseCMIM
older division of same rank: CT
younger division of same rank: nil
sub divisions: CV
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Westphalian Age
type: Concept
has geochronology rank: AGE
description: WESTPHALIAN
note: British regional age.
in scheme: Division
start: baseCS
end: baseCW
older division of same rank: CN
younger division of same rank: CS
sub divisions: CW
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Brigantian Age
type: Concept
has geochronology rank: AGE
description: BRIGANTIAN
note: British regional age.
in scheme: Division
start: baseCU
end: baseCX
older division of same rank: CR
younger division of same rank: nil
sub divisions: CX
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Yeadonian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: YEADONIAN
note: British regional sub-age.
in scheme: Division
start: baseCW
end: baseCY
older division of same rank: CZ
younger division of same rank: nil
sub divisions: CY
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marsdenian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: MARSDENIAN
note: British regional sub-age.
in scheme: Division
start: baseCY
end: baseCZ
older division of same rank: CK
younger division of same rank: CY
sub divisions: CZ
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Devonian Period
type: Concept
has geochronology rank: PERIOD
description: DEVONIAN
note: nil
in scheme: Division
start: baseC
end: baseRL
older division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/S
younger division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/C
sub divisions: http://data.bgs.ac.uk/ref/Geochronology/DivisionList/D
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Devonian

Famennian Age
type: Concept
has geochronology rank: AGE
description: FAMENNIAN
note: nil
in scheme: Division
start: baseC
end: baseDA
older division of same rank: DR
younger division of same rank: nil
sub divisions: DA
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Emsian Age
type: Concept
has geochronology rank: AGE
description: EMSIAN
note: nil
in scheme: Division
start: baseDM
end: baseDE
older division of same rank: DP
younger division of same rank: DI
sub divisions: DE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Eifelian Age
type: Concept
has geochronology rank: AGE
description: EIFELIAN
note: nil
in scheme: Division
start: baseDV
end: baseDM
older division of same rank: DE
younger division of same rank: DV
sub divisions: DI
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Early Devonian Epoch
type: Concept
has geochronology rank: EPOCH
description: EARLY DEVONIAN
note: nil
in scheme: Division
start: baseDM
end: baseRL
older division of same rank: SO
younger division of same rank: DM
sub divisions: DL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Mid Devonian Epoch
type: Concept
has geochronology rank: EPOCH
description: MID DEVONIAN
note: nil
in scheme: Division
start: baseDU
end: baseDM
older division of same rank: DL
younger division of same rank: DU
sub divisions: DM
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Lochkovian Age
type: Concept
has geochronology rank: AGE
description: LOCHKOVIAN
note: nil
in scheme: Division
start: baseDP
end: baseRL
older division of same rank: nil
younger division of same rank: DP
sub divisions: DO
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Pragian Age
type: Concept
has geochronology rank: AGE
description: PRAGIAN
note: nil
in scheme: Division
start: baseDE
end: baseDP
older division of same rank: DO
younger division of same rank: DE
sub divisions: DP
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Frasnian Age
type: Concept
has geochronology rank: AGE
description: FRASNIAN
note: nil
in scheme: Division
start: baseDA
end: baseDU
older division of same rank: DV
younger division of same rank: DA
sub divisions: DR
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Late Devonian Epoch
type: Concept
has geochronology rank: EPOCH
description: LATE DEVONIAN
note: nil
in scheme: Division
start: baseC
end: baseDU
older division of same rank: DM
younger division of same rank: CMIE
sub divisions: DU
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Givetian Age
type: Concept
has geochronology rank: AGE
description: GIVETIAN
note: nil
in scheme: Division
start: baseDU
end: baseDV
older division of same rank: DI
younger division of same rank: DR
sub divisions: DV
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cambrian Period
type: Concept
has geochronology rank: PERIOD
description: CAMBRIAN
note: nil
in scheme: Division
start: baseO
end: baseFH
older division of same rank: nil
younger division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/O
sub divisions: http://data.bgs.ac.uk/ref/Geochronology/DivisionList/E
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Cambrian

Cambrian Stage 2
type: Concept
has geochronology rank: AGE
description: CAMBRIAN STAGE 2
note: nil
in scheme: Division
start: baseE2
end: baseE02
older division of same rank: EFT
younger division of same rank: E03
sub divisions: E02
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cambrian Stage 3
type: Concept
has geochronology rank: AGE
description: CAMBRIAN STAGE 3
note: nil
in scheme: Division
start: baseE04
end: baseE2
older division of same rank: E02
younger division of same rank: E04
sub divisions: E03
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cambrian Stage 4
type: Concept
has geochronology rank: AGE
description: CAMBRIAN STAGE 4
note: nil
in scheme: Division
start: baseE3
end: baseE04
older division of same rank: E03
younger division of same rank: E05
sub divisions: E04
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cambrian Stage 5
type: Concept
has geochronology rank: AGE
description: CAMBRIAN STAGE 5
note: nil
in scheme: Division
start: baseEDM
end: baseE3
older division of same rank: E04
younger division of same rank: EDM
sub divisions: E05
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Paibian Age
type: Concept
has geochronology rank: AGE
description: PAIBIAN
note: nil
in scheme: Division
start: baseE09
end: baseEF
older division of same rank: EGZ
younger division of same rank: E09
sub divisions: E08
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cambrian Stage 9
type: Concept
has geochronology rank: AGE
description: CAMBRIAN STAGE 9
note: nil
in scheme: Division
start: baseE10
end: baseE09
older division of same rank: E08
younger division of same rank: E10
sub divisions: E09
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cambrian Stage 10
type: Concept
has geochronology rank: AGE
description: CAMBRIAN STAGE 10
note: nil
in scheme: Division
start: baseO
end: baseE10
older division of same rank: E09
younger division of same rank: OTR
sub divisions: E10
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cambrian Series 2
type: Concept
has geochronology rank: EPOCH
description: CAMBRIAN SERIES 2
note: nil
in scheme: Division
start: baseE3
end: baseE2
older division of same rank: EN
younger division of same rank: E3
sub divisions: E2
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cambrian Series 3
type: Concept
has geochronology rank: EPOCH
description: CAMBRIAN SERIES 3
note: nil
in scheme: Division
start: baseEF
end: baseE3
older division of same rank: E2
younger division of same rank: EF
sub divisions: E3
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Comley Epoch
type: Concept
has geochronology rank: EPOCH
description: COMLEY
note: British regional epoch.
in scheme: Division
start: baseED
end: baseEC
older division of same rank: nil
younger division of same rank: ED
sub divisions: EC
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

St David's Epoch
type: Concept
has geochronology rank: EPOCH
description: ST DAVID'S
note: British regional epoch.
in scheme: Division
start: baseEM
end: baseED
older division of same rank: EC
younger division of same rank: EM
sub divisions: ED
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Drumian Age
type: Concept
has geochronology rank: AGE
description: DRUMIAN
note: nil
in scheme: Division
start: baseEGZ
end: baseEDM
older division of same rank: E05
younger division of same rank: EGZ
sub divisions: EDM
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Furongian Epoch
type: Concept
has geochronology rank: EPOCH
description: FURONGIAN
note: nil
in scheme: Division
start: baseO
end: baseEF
older division of same rank: E3
younger division of same rank: nil
sub divisions: EF
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Fortunian Age
type: Concept
has geochronology rank: AGE
description: FORTUNIAN
note: nil
in scheme: Division
start: baseE02
end: baseFH
older division of same rank: nil
younger division of same rank: E02
sub divisions: EFT
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Guzhangian Age
type: Concept
has geochronology rank: AGE
description: GUZHANGIAN
note: nil
in scheme: Division
start: baseEF
end: baseEGZ
older division of same rank: EDM
younger division of same rank: E08
sub divisions: EGZ
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Merioneth Epoch
type: Concept
has geochronology rank: EPOCH
description: MERIONETH
note: British regional epoch.
in scheme: Division
start: baseO
end: baseEM
older division of same rank: ED
younger division of same rank: nil
sub divisions: EM
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Terreneuvian Epoch
type: Concept
has geochronology rank: EPOCH
description: TERRENEUVIAN
note: nil
in scheme: Division
start: baseE2
end: baseFH
older division of same rank: nil
younger division of same rank: E2
sub divisions: EN
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Tremadoc Epoch [Obsolete age code]
type: Concept
has geochronology rank: EPOCH
description: TREMADOC [OBSOLETE AGE CODE]
note: Code not suitable for use within Ordovician; use OTR Tremadocian or O1 Tremadoc.
in scheme: Division
start: baseOR
end: baseO
older division of same rank: nil
younger division of same rank: OR
sub divisions: ET
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Phanerozoic Eon
type: Concept
has geochronology rank: EON
description: PHANEROZOIC
note: nil
in scheme: Division
start: baseXR
end: baseFH
older division of same rank: AP
younger division of same rank: nil
sub divisions: FH
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bgs.ac.uk/discoveringGeology/time/Timechart/phanerozoic/home.html

Palaeogene Period
type: Concept
has geochronology rank: PERIOD
description: PALAEOGENE
note: nil
in scheme: Division
start: nil
end: baseIZ
older division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/K
younger division of same rank: nil
sub divisions: http://data.bgs.ac.uk/ref/Geochronology/DivisionList/G
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Bartonian Age
type: Concept
has geochronology rank: AGE
description: BARTONIAN
note: nil
in scheme: Division
start: baseGEL
end: baseGB
older division of same rank: GL
younger division of same rank: GI
sub divisions: GB
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Chattian Age
type: Concept
has geochronology rank: AGE
description: CHATTIAN
note: nil
in scheme: Division
start: nil
end: baseGOL
older division of same rank: GR
younger division of same rank: NA
sub divisions: GC
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Danian Age
type: Concept
has geochronology rank: AGE
description: DANIAN
note: nil
in scheme: Division
start: baseGPM
end: baseIZ
older division of same rank: KM
younger division of same rank: GS
sub divisions: GD
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Eocene Epoch
type: Concept
has geochronology rank: EPOCH
description: EOCENE
note: nil
in scheme: Division
start: baseGO
end: baseGE
older division of same rank: GP
younger division of same rank: GO
sub divisions: GE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Eocene

Early Eocene Sub-epoch
type: Concept
has geochronology rank: SUB-EPOCH
description: EARLY EOCENE
note: nil
in scheme: Division
start: baseGEM
end: baseGE
older division of same rank: GPL
younger division of same rank: GEM
sub divisions: GEE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Late Eocene Sub-epoch
type: Concept
has geochronology rank: SUB-EPOCH
description: LATE EOCENE
note: nil
in scheme: Division
start: baseGO
end: baseGEL
older division of same rank: GEM
younger division of same rank: GOE
sub divisions: GEL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Mid Eocene Sub-epoch
type: Concept
has geochronology rank: SUB-EPOCH
description: MID EOCENE
note: nil
in scheme: Division
start: baseGEL
end: baseGEM
older division of same rank: GEE
younger division of same rank: GEL
sub divisions: GEM
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Priabonian Age
type: Concept
has geochronology rank: AGE
description: PRIABONIAN
note: nil
in scheme: Division
start: baseGO
end: baseGEL
older division of same rank: GB
younger division of same rank: GR
sub divisions: GI
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Lutetian Age
type: Concept
has geochronology rank: AGE
description: LUTETIAN
note: nil
in scheme: Division
start: baseGB
end: baseGEM
older division of same rank: GY
younger division of same rank: GB
sub divisions: GL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Oligocene Epoch
type: Concept
has geochronology rank: EPOCH
description: OLIGOCENE
note: nil
in scheme: Division
start: nil
end: baseGO
older division of same rank: GE
younger division of same rank: NM
sub divisions: GO
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Oligocene

Early Oligocene Sub-epoch
type: Concept
has geochronology rank: SUB-EPOCH
description: EARLY OLIGOCENE
note: nil
in scheme: Division
start: baseGOL
end: baseGO
older division of same rank: GEL
younger division of same rank: GOL
sub divisions: GOE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Late Oligocene Sub-epoch
type: Concept
has geochronology rank: SUB-EPOCH
description: LATE OLIGOCENE
note: nil
in scheme: Division
start: nil
end: baseGOL
older division of same rank: GOE
younger division of same rank: NME
sub divisions: GOL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Paleocene Epoch
type: Concept
has geochronology rank: EPOCH
description: PALEOCENE
note: nil
in scheme: Division
start: baseGE
end: baseIZ
older division of same rank: KU
younger division of same rank: GE
sub divisions: GP
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Early Paleocene Sub-epoch
type: Concept
has geochronology rank: SUB-EPOCH
description: EARLY PALEOCENE
note: nil
in scheme: Division
start: baseGPM
end: baseIZ
older division of same rank: nil
younger division of same rank: GPM
sub divisions: GPE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Late Paleocene Sub-epoch
type: Concept
has geochronology rank: SUB-EPOCH
description: LATE PALEOCENE
note: nil
in scheme: Division
start: baseGE
end: baseGPL
older division of same rank: GPM
younger division of same rank: GEE
sub divisions: GPL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Mid Paleocene Sub-epoch
type: Concept
has geochronology rank: SUB-EPOCH
description: MID PALEOCENE
note: nil
in scheme: Division
start: baseGPL
end: baseGPM
older division of same rank: GPE
younger division of same rank: GPL
sub divisions: GPM
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Rupelian Age
type: Concept
has geochronology rank: AGE
description: RUPELIAN
note: nil
in scheme: Division
start: baseGOL
end: baseGO
older division of same rank: GI
younger division of same rank: GC
sub divisions: GR
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Selandian Age
type: Concept
has geochronology rank: AGE
description: SELANDIAN
note: nil
in scheme: Division
start: baseGPL
end: baseGPM
older division of same rank: GD
younger division of same rank: GT
sub divisions: GS
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Thanetian Age
type: Concept
has geochronology rank: AGE
description: THANETIAN
note: nil
in scheme: Division
start: baseGE
end: baseGPL
older division of same rank: GS
younger division of same rank: GY
sub divisions: GT
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Ypresian Age
type: Concept
has geochronology rank: AGE
description: YPRESIAN
note: nil
in scheme: Division
start: baseGEM
end: baseGE
older division of same rank: GT
younger division of same rank: GL
sub divisions: GY
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cenozoic Era
type: Concept
has geochronology rank: ERA
description: CENOZOIC
note: nil
in scheme: Division
start: baseXR
end: baseIZ
older division of same rank: MZ
younger division of same rank: nil
sub divisions: IZ
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Tertiary Sub-era
type: Concept
has geochronology rank: SUB-ERA
description: TERTIARY
note: nil
in scheme: Division
start: baseQ
end: baseIZ
older division of same rank: nil
younger division of same rank: nil
sub divisions: IZT
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Jurassic Period
type: Concept
has geochronology rank: PERIOD
description: JURASSIC
note: nil
in scheme: Division
start: baseK
end: baseJ
older division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/T
younger division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/K
sub divisions: http://data.bgs.ac.uk/ref/Geochronology/DivisionList/J
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Jurassic

Aalenian Age
type: Concept
has geochronology rank: AGE
description: AALENIAN
note: nil
in scheme: Division
start: baseJB
end: baseJM
older division of same rank: JT
younger division of same rank: JB
sub divisions: JA
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Bajocian Age
type: Concept
has geochronology rank: AGE
description: BAJOCIAN
note: nil
in scheme: Division
start: baseJN
end: baseJB
older division of same rank: JA
younger division of same rank: JN
sub divisions: JB
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Callovian Age
type: Concept
has geochronology rank: AGE
description: CALLOVIAN
note: nil
in scheme: Division
start: baseJU
end: baseJC
older division of same rank: JN
younger division of same rank: JO
sub divisions: JC
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Kimmeridgian Age
type: Concept
has geochronology rank: AGE
description: KIMMERIDGIAN
note: nil
in scheme: Division
start: nil
end: baseJD
older division of same rank: JO
younger division of same rank: nil
sub divisions: JD
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Pliensbachian Age
type: Concept
has geochronology rank: AGE
description: PLIENSBACHIAN
note: nil
in scheme: Division
start: baseJT
end: baseJE
older division of same rank: JS
younger division of same rank: JT
sub divisions: JE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Hettangian Age
type: Concept
has geochronology rank: AGE
description: HETTANGIAN
note: nil
in scheme: Division
start: baseJS
end: baseJ
older division of same rank: TR
younger division of same rank: JS
sub divisions: JH
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Tithonian Age
type: Concept
has geochronology rank: AGE
description: TITHONIAN
note: nil
in scheme: Division
start: baseK
end: nil
older division of same rank: JD
younger division of same rank: nil
sub divisions: JI
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Early Jurassic Epoch
type: Concept
has geochronology rank: EPOCH
description: EARLY JURASSIC
note: nil
in scheme: Division
start: baseJM
end: baseJ
older division of same rank: TU
younger division of same rank: JM
sub divisions: JL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Mid Jurassic Epoch
type: Concept
has geochronology rank: EPOCH
description: MID JURASSIC
note: nil
in scheme: Division
start: baseJU
end: baseJM
older division of same rank: JL
younger division of same rank: JU
sub divisions: JM
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Bathonian Age
type: Concept
has geochronology rank: AGE
description: BATHONIAN
note: nil
in scheme: Division
start: baseJC
end: baseJN
older division of same rank: JB
younger division of same rank: JC
sub divisions: JN
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Oxfordian Age
type: Concept
has geochronology rank: AGE
description: OXFORDIAN
note: nil
in scheme: Division
start: baseJD
end: baseJU
older division of same rank: JC
younger division of same rank: JD
sub divisions: JO
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Portlandian Age [Obsolete age term]
type: Concept
has geochronology rank: AGE
description: PORTLANDIAN [OBSOLETE AGE TERM: CLOSEST CURRENT TERM IS TITHONIAN]
note: Not on 2009 BGS Geological Time Chart; no direct replacement term.
in scheme: Division
start: baseK
end: baseJP
older division of same rank: nil
younger division of same rank: nil
sub divisions: JP
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Sinemurian Age
type: Concept
has geochronology rank: AGE
description: SINEMURIAN
note: nil
in scheme: Division
start: baseJE
end: baseJS
older division of same rank: JH
younger division of same rank: JE
sub divisions: JS
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Toarcian Age
type: Concept
has geochronology rank: AGE
description: TOARCIAN
note: nil
in scheme: Division
start: baseJM
end: baseJT
older division of same rank: JE
younger division of same rank: JA
sub divisions: JT
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Late Jurassic Epoch
type: Concept
has geochronology rank: EPOCH
description: LATE JURASSIC
note: nil
in scheme: Division
start: baseK
end: baseJU
older division of same rank: JM
younger division of same rank: KL
sub divisions: JU
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Volgian Age [Obsolete age term]
type: Concept
has geochronology rank: AGE
description: VOLGIAN [OBSOLETE AGE TERM: USE TITHONIAN]
note: Not on 2009 BGS Geological Time Chart; use JI Tithonian.
in scheme: Division
start: baseK
end: nil
older division of same rank: JD
younger division of same rank: nil
sub divisions: JV
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cretaceous Period
type: Concept
has geochronology rank: PERIOD
description: CRETACEOUS
note: nil
in scheme: Division
start: baseIZ
end: baseK
older division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/J
younger division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/G
sub divisions: http://data.bgs.ac.uk/ref/Geochronology/DivisionList/K
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Cretaceous

Albian Age
type: Concept
has geochronology rank: AGE
description: ALBIAN
note: nil
in scheme: Division
start: baseKU
end: baseKA
older division of same rank: KP
younger division of same rank: KE
sub divisions: KA
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Barremian Age
type: Concept
has geochronology rank: AGE
description: BARREMIAN
note: nil
in scheme: Division
start: baseKP
end: baseKB
older division of same rank: KH
younger division of same rank: KP
sub divisions: KB
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Campanian Age
type: Concept
has geochronology rank: AGE
description: CAMPANIAN
note: nil
in scheme: Division
start: baseKM
end: baseKC
older division of same rank: KS
younger division of same rank: KM
sub divisions: KC
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cenomanian Age
type: Concept
has geochronology rank: AGE
description: CENOMANIAN
note: nil
in scheme: Division
start: baseKT
end: baseKU
older division of same rank: KA
younger division of same rank: KT
sub divisions: KE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Hauterivian Age
type: Concept
has geochronology rank: AGE
description: HAUTERIVIAN
note: nil
in scheme: Division
start: baseKB
end: baseKH
older division of same rank: KV
younger division of same rank: KB
sub divisions: KH
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Early Cretaceous Epoch
type: Concept
has geochronology rank: EPOCH
description: EARLY CRETACEOUS
note: nil
in scheme: Division
start: baseKU
end: baseK
older division of same rank: JU
younger division of same rank: KU
sub divisions: KL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Maastrichtian Age
type: Concept
has geochronology rank: AGE
description: MAASTRICHTIAN
note: nil
in scheme: Division
start: baseIZ
end: baseKM
older division of same rank: KC
younger division of same rank: GD
sub divisions: KM
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Coniacian Age
type: Concept
has geochronology rank: AGE
description: CONIACIAN
note: nil
in scheme: Division
start: baseKS
end: baseKO
older division of same rank: KT
younger division of same rank: KS
sub divisions: KO
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Aptian Age
type: Concept
has geochronology rank: AGE
description: APTIAN
note: nil
in scheme: Division
start: baseKA
end: baseKP
older division of same rank: KB
younger division of same rank: KA
sub divisions: KP
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Berriasian Age
type: Concept
has geochronology rank: AGE
description: BERRIASIAN
note: nil
in scheme: Division
start: baseKV
end: baseK
older division of same rank: nil
younger division of same rank: KV
sub divisions: KR
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Santonian Age
type: Concept
has geochronology rank: AGE
description: SANTONIAN
note: nil
in scheme: Division
start: baseKC
end: baseKS
older division of same rank: KO
younger division of same rank: KC
sub divisions: KS
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Turonian Age
type: Concept
has geochronology rank: AGE
description: TURONIAN
note: nil
in scheme: Division
start: baseKO
end: baseKT
older division of same rank: KE
younger division of same rank: KO
sub divisions: KT
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Late Cretaceous Epoch
type: Concept
has geochronology rank: EPOCH
description: LATE CRETACEOUS
note: nil
in scheme: Division
start: baseIZ
end: baseKU
older division of same rank: KL
younger division of same rank: GP
sub divisions: KU
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Valanginian Age
type: Concept
has geochronology rank: AGE
description: VALANGINIAN
note: nil
in scheme: Division
start: baseKH
end: baseKV
older division of same rank: KR
younger division of same rank: KH
sub divisions: KV
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Ryazanian Age [Obsolete age term]
type: Concept
has geochronology rank: AGE
description: RYAZANIAN [OBSOLETE AGE TERM: CLOSEST CURRENT TERM IS BERRIASIAN]
note: Not on 2009 BGS Geological Time Chart; no direct replacement term.
in scheme: Division
start: nil
end: baseK
older division of same rank: nil
younger division of same rank: nil
sub divisions: KZ
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Mesozoic Era
type: Concept
has geochronology rank: ERA
description: MESOZOIC
note: nil
in scheme: Division
start: baseIZ
end: baseMZ
older division of same rank: RZ
younger division of same rank: IZ
sub divisions: MZ
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Neogene Period
type: Concept
has geochronology rank: PERIOD
description: NEOGENE
note: nil
in scheme: Division
start: baseQ
end: nil
older division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/G
younger division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/Q
sub divisions: http://data.bgs.ac.uk/ref/Geochronology/DivisionList/N
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Neogene Period [Obsolete concept for period]
type: Concept
has geochronology rank: PERIOD
description: NEOGENE [OBSOLETE CONCEPT FOR THIS PERIOD]
note: Used when Plio-Pleistocene boundary was placed at 1.806 MA, no longer the accepted BGS definition; use N Neogene.
in scheme: Division
start: baseQ1
end: nil
older division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/G
younger division of same rank: Q1
sub divisions: N1
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Aquitanian Age
type: Concept
has geochronology rank: AGE
description: AQUITANIAN
note: nil
in scheme: Division
start: baseNB
end: nil
older division of same rank: GC
younger division of same rank: NB
sub divisions: NA
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Burdigalian Age
type: Concept
has geochronology rank: AGE
description: BURDIGALIAN
note: nil
in scheme: Division
start: baseNMM
end: baseNB
older division of same rank: NA
younger division of same rank: NL
sub divisions: NB
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Piacenzian Age
type: Concept
has geochronology rank: AGE
description: PIACENZIAN
note: Also known as Waltonian Age.
in scheme: Division
start: baseQ
end: baseNOL
older division of same rank: NZ
younger division of same rank: nil
sub divisions: NC
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Messinian Age
type: Concept
has geochronology rank: AGE
description: MESSINIAN
note: nil
in scheme: Division
start: nil
end: baseNE
older division of same rank: NT
younger division of same rank: NZ
sub divisions: NE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Piacenzian Age [Obsolete concept for age]
type: Concept
has geochronology rank: AGE
description: PIACENZIAN [OBSOLETE CONCEPT FOR THIS AGE]
note: Used when Plio-Pleistocene boundary was placed at 1.806 MA, no longer the accepted BGS definition; use NC Piacenzian.
in scheme: Division
start: baseQ1
end: baseNOL
older division of same rank: NZ
younger division of same rank: nil
sub divisions: NI
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Langhian Age
type: Concept
has geochronology rank: AGE
description: LANGHIAN
note: nil
in scheme: Division
start: baseNS
end: baseNMM
older division of same rank: NB
younger division of same rank: NS
sub divisions: NL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Miocene Epoch
type: Concept
has geochronology rank: EPOCH
description: MIOCENE
note: nil
in scheme: Division
start: nil
end: nil
older division of same rank: GO
younger division of same rank: nil
sub divisions: NM
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Miocene

Early Miocene Sub-epoch
type: Concept
has geochronology rank: SUB-EPOCH
description: EARLY MIOCENE
note: nil
in scheme: Division
start: baseNMM
end: nil
older division of same rank: GOL
younger division of same rank: NMM
sub divisions: NME
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Late Miocene Sub-epoch
type: Concept
has geochronology rank: SUB-EPOCH
description: LATE MIOCENE
note: nil
in scheme: Division
start: nil
end: baseNML
older division of same rank: NMM
younger division of same rank: NOE
sub divisions: NML
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Mid Miocene Sub-epoch
type: Concept
has geochronology rank: SUB-EPOCH
description: MID MIOCENE
note: nil
in scheme: Division
start: baseNML
end: baseNMM
older division of same rank: NME
younger division of same rank: NML
sub divisions: NMM
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Pliocene Epoch [Obsolete concept for epoch]
type: Concept
has geochronology rank: EPOCH
description: PLIOCENE [OBSOLETE CONCEPT FOR THIS EPOCH]
note: Used when Plio-Pleistocene boundary was placed at 1.806 MA, no longer the accepted BGS definition; use NP Pliocene.
in scheme: Division
start: baseQ1
end: nil
older division of same rank: NM
younger division of same rank: Q2
sub divisions: NO
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Pliocene

Early Pliocene Sub-epoch
type: Concept
has geochronology rank: SUB-EPOCH
description: EARLY PLIOCENE
note: nil
in scheme: Division
start: baseNOL
end: nil
older division of same rank: NML
younger division of same rank: NOL
sub divisions: NOE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Late Pliocene Sub-epoch
type: Concept
has geochronology rank: SUB-EPOCH
description: LATE PLIOCENE
note: nil
in scheme: Division
start: baseQ
end: baseNOL
older division of same rank: NOE
younger division of same rank: nil
sub divisions: NOL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Pliocene Epoch
type: Concept
has geochronology rank: EPOCH
description: PLIOCENE
note: nil
in scheme: Division
start: baseQ
end: nil
older division of same rank: NM
younger division of same rank: QP
sub divisions: NP
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Serravallian Age
type: Concept
has geochronology rank: AGE
description: SERRAVALLIAN
note: nil
in scheme: Division
start: baseNML
end: baseNS
older division of same rank: NL
younger division of same rank: NT
sub divisions: NS
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Tortonian Age
type: Concept
has geochronology rank: AGE
description: TORTONIAN
note: nil
in scheme: Division
start: baseNE
end: baseNML
older division of same rank: NS
younger division of same rank: NE
sub divisions: NT
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Waltonian Age
type: Concept
has geochronology rank: AGE
description: WALTONIAN
note: Not on 2009 BGS Geological Time Chart; use NC Piacenzian.
in scheme: Division
start: baseQ
end: baseNOL
older division of same rank: NZ
younger division of same rank: nil
sub divisions: NW
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Zanclean Age
type: Concept
has geochronology rank: AGE
description: ZANCLEAN
note: nil
in scheme: Division
start: baseNOL
end: nil
older division of same rank: NE
younger division of same rank: nil
sub divisions: NZ
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Ordovician Period
type: Concept
has geochronology rank: PERIOD
description: ORDOVICIAN
note: nil
in scheme: Division
start: baseS
end: baseO
older division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/E
younger division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/S
sub divisions: http://data.bgs.ac.uk/ref/Geochronology/DivisionList/O
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Ordovician

Tremadoc Epoch
type: Concept
has geochronology rank: EPOCH
description: TREMADOC
note: British regional epoch.
in scheme: Division
start: baseOR
end: baseO
older division of same rank: nil
younger division of same rank: OR
sub divisions: O1
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Abereiddian Age
type: Concept
has geochronology rank: AGE
description: ABEREIDDIAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOD
end: nil
older division of same rank: OF
younger division of same rank: O3
sub divisions: O2
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Llandeilian Age
type: Concept
has geochronology rank: AGE
description: LLANDEILIAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: nil
end: baseOD
older division of same rank: O2
younger division of same rank: nil
sub divisions: O3
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Caradoc Epoch
type: Concept
has geochronology rank: EPOCH
description: CARADOC
note: British regional epoch.
in scheme: Division
start: baseOA
end: nil
older division of same rank: nil
younger division of same rank: OA
sub divisions: O4
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Ashgill Epoch
type: Concept
has geochronology rank: EPOCH
description: ASHGILL
note: British regional epoch.
in scheme: Division
start: baseS
end: baseOA
older division of same rank: nil
younger division of same rank: SL
sub divisions: OA
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Moridunian Age
type: Concept
has geochronology rank: AGE
description: MORIDUNIAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOI
end: baseOR
older division of same rank: OTR
younger division of same rank: OI
sub divisions: OB
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Caradoc Epoch [Obsolete concept for epoch]
type: Concept
has geochronology rank: EPOCH
description: CARADOC [OBSOLETE CONCEPT FOR THIS EPOCH]
note: Used when base was placed at base of Costonian, no longer the accepted BGS definition; use O4 Caradoc.
in scheme: Division
start: baseOA
end: baseOC
older division of same rank: nil
younger division of same rank: OA
sub divisions: OC
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Llandeilo Epoch [Obsolete age term]
type: Concept
has geochronology rank: EPOCH
description: LLANDEILO [OBSOLETE AGE TERM: USE LLANDEILIAN]
note: Not on 2009 BGS Geological Time Chart; use O3 Llandeilian.
in scheme: Division
start: nil
end: baseOD
older division of same rank: OV
younger division of same rank: nil
sub divisions: OD
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Dapingian Age
type: Concept
has geochronology rank: AGE
description: DAPINGIAN
note: nil
in scheme: Division
start: baseODW
end: baseOMD
older division of same rank: OFL
younger division of same rank: ODW
sub divisions: ODP
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Darriwilian Age
type: Concept
has geochronology rank: AGE
description: DARRIWILIAN
note: nil
in scheme: Division
start: nil
end: baseODW
older division of same rank: ODP
younger division of same rank: nil
sub divisions: ODW
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Llanvirn Epoch
type: Concept
has geochronology rank: EPOCH
description: LLANVIRN
note: British regional epoch.
in scheme: Division
start: nil
end: nil
older division of same rank: OR
younger division of same rank: nil
sub divisions: OE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Early Ordovician Epoch
type: Concept
has geochronology rank: EPOCH
description: EARLY ORDOVICIAN
note: nil
in scheme: Division
start: baseOMD
end: baseO
older division of same rank: nil
younger division of same rank: OMD
sub divisions: OEA
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Fennian Age
type: Concept
has geochronology rank: AGE
description: FENNIAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: nil
end: baseOF
older division of same rank: OI
younger division of same rank: O2
sub divisions: OF
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Floian Age
type: Concept
has geochronology rank: AGE
description: FLOIAN
note: nil
in scheme: Division
start: baseOMD
end: baseOR
older division of same rank: OTR
younger division of same rank: ODP
sub divisions: OFL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Harnagian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: HARNAGIAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOY
end: baseOK
older division of same rank: OO
younger division of same rank: OY
sub divisions: OG
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Hirnantian Age
type: Concept
has geochronology rank: AGE
description: HIRNANTIAN
note: nil
in scheme: Division
start: baseS
end: baseOH
older division of same rank: nil
younger division of same rank: SR
sub divisions: OH
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Whitlandian Age
type: Concept
has geochronology rank: AGE
description: WHITLANDIAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOF
end: baseOI
older division of same rank: OB
younger division of same rank: OF
sub divisions: OI
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Aurelucian Age
type: Concept
has geochronology rank: AGE
description: AURELUCIAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOK
end: nil
older division of same rank: nil
younger division of same rank: OK
sub divisions: OJ
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Burrellian Age
type: Concept
has geochronology rank: AGE
description: BURRELLIAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOQ
end: baseOK
older division of same rank: OJ
younger division of same rank: OQ
sub divisions: OK
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Katian Age
type: Concept
has geochronology rank: AGE
description: KATIAN
note: nil
in scheme: Division
start: baseOH
end: baseOKA
older division of same rank: OSA
younger division of same rank: OH
sub divisions: OKA
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Longvillian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: LONGVILLIAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOQ
end: baseOL
older division of same rank: OY
younger division of same rank: OS
sub divisions: OL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Late Ordovician Epoch
type: Concept
has geochronology rank: EPOCH
description: LATE ORDOVICIAN
note: nil
in scheme: Division
start: baseS
end: nil
older division of same rank: nil
younger division of same rank: SL
sub divisions: OLA
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marshbrookian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: MARSHBROOKIAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOX
end: baseOM
older division of same rank: OS
younger division of same rank: OT
sub divisions: OM
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Mid Ordovician Epoch
type: Concept
has geochronology rank: EPOCH
description: MID ORDOVICIAN
note: nil
in scheme: Division
start: nil
end: baseOMD
older division of same rank: OEA
younger division of same rank: nil
sub divisions: OMD
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Onnian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: ONNIAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOA
end: baseON
older division of same rank: OT
younger division of same rank: nil
sub divisions: ON
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Costonian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: COSTONIAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOK
end: baseOC
older division of same rank: OZ
younger division of same rank: OG
sub divisions: OO
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Pusgillian Age
type: Concept
has geochronology rank: AGE
description: PUSGILLIAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOU
end: baseOA
older division of same rank: OX
younger division of same rank: OU
sub divisions: OP
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cheneyan Age
type: Concept
has geochronology rank: AGE
description: CHENEYAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOX
end: baseOQ
older division of same rank: OK
younger division of same rank: OX
sub divisions: OQ
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Arenig Epoch
type: Concept
has geochronology rank: EPOCH
description: ARENIG
note: British regional epoch.
in scheme: Division
start: nil
end: baseOR
older division of same rank: nil
younger division of same rank: nil
sub divisions: OR
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Woolstonian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: WOOLSTONIAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOM
end: baseOQ
older division of same rank: OL
younger division of same rank: OM
sub divisions: OS
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Sandbian Age
type: Concept
has geochronology rank: AGE
description: SANDBIAN
note: nil
in scheme: Division
start: baseOKA
end: nil
older division of same rank: nil
younger division of same rank: OKA
sub divisions: OSA
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Actonian Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: ACTONIAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseON
end: baseOX
older division of same rank: OM
younger division of same rank: ON
sub divisions: OT
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Tremadocian Age
type: Concept
has geochronology rank: AGE
description: TREMADOCIAN
note: nil
in scheme: Division
start: baseOR
end: baseO
older division of same rank: E10
younger division of same rank: nil
sub divisions: OTR
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cautleyan Age
type: Concept
has geochronology rank: AGE
description: CAUTLEYAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOW
end: baseOU
older division of same rank: OP
younger division of same rank: OW
sub divisions: OU
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Llanvirn Epoch [Obsolete concept for epoch]
type: Concept
has geochronology rank: EPOCH
description: LLANVIRN [OBSOLETE CONCEPT FOR THIS EPOCH: USE ABEREIDDIAN]
note: Used when Llanvirn epoch was defined as preceeding the Llandeilo, no longer the accepted BGS definition; use O2 Abereiddian.
in scheme: Division
start: baseOD
end: nil
older division of same rank: OR
younger division of same rank: OD
sub divisions: OV
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Rawtheyan Age
type: Concept
has geochronology rank: AGE
description: RAWTHEYAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOH
end: baseOW
older division of same rank: OU
younger division of same rank: OH
sub divisions: OW
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Streffordian Age
type: Concept
has geochronology rank: AGE
description: STREFFORDIAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOA
end: baseOX
older division of same rank: OQ
younger division of same rank: OP
sub divisions: OX
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Soudleyan Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: SOUDLEYAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOL
end: baseOY
older division of same rank: OG
younger division of same rank: OL
sub divisions: OY
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Velfreyan Sub-age
type: Concept
has geochronology rank: SUB-AGE
description: VELFREYAN
note: Not on 2009 BGS Geological Time Chart but retained for use.
in scheme: Division
start: baseOC
end: nil
older division of same rank: nil
younger division of same rank: OO
sub divisions: OZ
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Permian Period
type: Concept
has geochronology rank: PERIOD
description: PERMIAN
note: nil
in scheme: Division
start: baseMZ
end: baseP
older division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/C
younger division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/T
sub divisions: http://data.bgs.ac.uk/ref/Geochronology/DivisionList/P
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Permian

Asselian Age
type: Concept
has geochronology rank: AGE
description: ASSELIAN
note: nil
in scheme: Division
start: basePS
end: baseP
older division of same rank: nil
younger division of same rank: PS
sub divisions: PA
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Ufimian-Kazanian Age [Obsolete age term]
type: Concept
has geochronology rank: AGE
description: UFIMIAN-KAZANIAN [OBSOLETE AGE TERM: CLOSEST CURRENT TERM IS GUADALUPIAN]
note: Not on 2009 BGS Geological Time Chart; no direct replacement term.
in scheme: Division
start: basePT
end: nil
older division of same rank: PK
younger division of same rank: PT
sub divisions: PF
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Artinskian Age
type: Concept
has geochronology rank: AGE
description: ARTINSKIAN
note: nil
in scheme: Division
start: basePK
end: basePI
older division of same rank: PS
younger division of same rank: PK
sub divisions: PI
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Kungurian Age
type: Concept
has geochronology rank: AGE
description: KUNGURIAN
note: nil
in scheme: Division
start: nil
end: basePK
older division of same rank: PI
younger division of same rank: nil
sub divisions: PK
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Early Permian Epoch [Obsolete age term]
type: Concept
has geochronology rank: EPOCH
description: EARLY PERMIAN [OBSOLETE AGE TERM: USE CISURALIAN]
note: Not on 2009 BGS Geological Time Chart; use PLC Cisuralian.
in scheme: Division
start: nil
end: baseP
older division of same rank: CPEL
younger division of same rank: nil
sub divisions: PL
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cisuralian Epoch
type: Concept
has geochronology rank: EPOCH
description: CISURALIAN
note: Also known as Early Permian Epoch.
in scheme: Division
start: nil
end: baseP
older division of same rank: CPEL
younger division of same rank: nil
sub divisions: PLC
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Sakmarian Age
type: Concept
has geochronology rank: AGE
description: SAKMARIAN
note: nil
in scheme: Division
start: basePI
end: basePS
older division of same rank: PA
younger division of same rank: PI
sub divisions: PS
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Tatarian Age [Obsolete age term]
type: Concept
has geochronology rank: AGE
description: TATARIAN [OBSOLETE AGE TERM: CLOSEST CURRENT TERM IS LOPINGIAN]
note: Not on 2009 BGS Geological Time Chart; no direct replacement term.
in scheme: Division
start: baseMZ
end: basePT
older division of same rank: PF
younger division of same rank: nil
sub divisions: PT
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Late Permian Epoch [Obsolete age term]
type: Concept
has geochronology rank: EPOCH
description: LATE PERMIAN [OBSOLETE AGE TERM: NO CURRENT DIRECT EQUIVALENT]
note: Not on 2009 BGS Geological Time Chart; no direct replacement term.
in scheme: Division
start: baseMZ
end: nil
older division of same rank: nil
younger division of same rank: TE
sub divisions: PU
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Capitanian Age
type: Concept
has geochronology rank: AGE
description: CAPITANIAN
note: nil
in scheme: Division
start: basePUL
end: basePUC
older division of same rank: PUD
younger division of same rank: PUW
sub divisions: PUC
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Wordian Age
type: Concept
has geochronology rank: AGE
description: WORDIAN
note: nil
in scheme: Division
start: basePUC
end: basePUD
older division of same rank: PUR
younger division of same rank: PUC
sub divisions: PUD
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Guadalupian Epoch
type: Concept
has geochronology rank: EPOCH
description: GUADALUPIAN
note: nil
in scheme: Division
start: basePUL
end: nil
older division of same rank: nil
younger division of same rank: PUL
sub divisions: PUG
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Changhsingian Age
type: Concept
has geochronology rank: AGE
description: CHANGHSINGIAN
note: nil
in scheme: Division
start: baseMZ
end: basePUH
older division of same rank: PUW
younger division of same rank: nil
sub divisions: PUH
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Lopingian Epoch
type: Concept
has geochronology rank: EPOCH
description: LOPINGIAN
note: nil
in scheme: Division
start: baseMZ
end: basePUL
older division of same rank: PUG
younger division of same rank: TE
sub divisions: PUL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Roadian Age
type: Concept
has geochronology rank: AGE
description: ROADIAN
note: nil
in scheme: Division
start: basePUD
end: nil
older division of same rank: PK
younger division of same rank: PUD
sub divisions: PUR
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Wuchiapingian Age
type: Concept
has geochronology rank: AGE
description: WUCHIAPINGIAN
note: nil
in scheme: Division
start: basePUH
end: basePUL
older division of same rank: PUC
younger division of same rank: PUH
sub divisions: PUW
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Quaternary Period
type: Concept
has geochronology rank: PERIOD
description: QUATERNARY
note: nil
in scheme: Division
start: baseXR
end: baseQ
older division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/N
younger division of same rank: nil
sub divisions: http://data.bgs.ac.uk/ref/Geochronology/DivisionList/Q
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Quaternary Period [Obsolete concept for period]
type: Concept
has geochronology rank: PERIOD
description: QUATERNARY [OBSOLETE CONCEPT FOR THIS PERIOD]
note: Used when Plio-Pleistocene boundary was placed at 1.806 MA, no longer the accepted BGS definition; use Q Quaternary.
in scheme: Division
start: baseXR
end: baseQ1
older division of same rank: N1
younger division of same rank: nil
sub divisions: Q1
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Pleistocene Epoch [Obsolete concept for epoch]
type: Concept
has geochronology rank: EPOCH
description: PLEISTOCENE [OBSOLETE CONCEPT FOR THIS EPOCH]
note: Used when Plio-Pleistocene boundary was placed at 1.806 MA, no longer the accepted BGS definition; use QP Pleistocene.
in scheme: Division
start: baseQH
end: baseQ1
older division of same rank: NO
younger division of same rank: QH
sub divisions: Q2
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Pleistocene

Calabrian Age
type: Concept
has geochronology rank: AGE
description: CALABRIAN
note: nil
in scheme: Division
start: baseQ2I
end: baseQ1
older division of same rank: nil
younger division of same rank: Q2I
sub divisions: Q2C
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Gelasian Age
type: Concept
has geochronology rank: AGE
description: GELASIAN
note: nil
in scheme: Division
start: baseQ1
end: baseQ
older division of same rank: nil
younger division of same rank: nil
sub divisions: Q2G
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Ionian Age
type: Concept
has geochronology rank: AGE
description: IONIAN
note: nil
in scheme: Division
start: nil
end: baseQ2I
older division of same rank: Q2C
younger division of same rank: nil
sub divisions: Q2I
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Tarantian Age
type: Concept
has geochronology rank: AGE
description: TARANTIAN
note: nil
in scheme: Division
start: baseQH
end: nil
older division of same rank: nil
younger division of same rank: QF
sub divisions: Q2T
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Anglian Age
type: Concept
has geochronology rank: AGE
description: ANGLIAN
note: Contemporaneous with Elsterian; MIS 12; see RR/04/04.
in scheme: Division
start: nil
end: nil
older division of same rank: nil
younger division of same rank: nil
sub divisions: QA
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Beestonian Age
type: Concept
has geochronology rank: AGE
description: BEESTONIAN
note: See RR/04/04.
in scheme: Division
start: nil
end: nil
older division of same rank: nil
younger division of same rank: nil
sub divisions: QB
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Cromerian Age
type: Concept
has geochronology rank: AGE
description: CROMERIAN
note: Contemporaneous with Cromerian Complex; MIS 13-21; RR/04/04.
in scheme: Division
start: nil
end: nil
older division of same rank: nil
younger division of same rank: nil
sub divisions: QC
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Devensian Age
type: Concept
has geochronology rank: AGE
description: DEVENSIAN
note: Contemporaneous with Weichselian; see RR/04/04.
in scheme: Division
start: baseQH
end: nil
older division of same rank: nil
younger division of same rank: QF
sub divisions: QD
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Dimlington Stadial
type: Concept
has geochronology rank: SUB-AGE
description: DIMLINGTON STADIAL
note: See RR/04/04.
in scheme: Division
start: baseQDW
end: baseQDD
older division of same rank: nil
younger division of same rank: QDW
sub divisions: QDD
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Loch Lomond Stadial (Younger Dryas)
type: Concept
has geochronology rank: SUB-AGE
description: LOCH LOMOND STADIAL (YOUNGER DRYAS)
note: See RR/04/04.
in scheme: Division
start: baseQH
end: baseQDL
older division of same rank: QDW
younger division of same rank: nil
sub divisions: QDL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Windermere Interstadial
type: Concept
has geochronology rank: SUB-AGE
description: WINDERMERE INTERSTADIAL
note: See RR/04/04.
in scheme: Division
start: baseQDL
end: baseQDW
older division of same rank: QDD
younger division of same rank: QDL
sub divisions: QDW
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Baventian Age
type: Concept
has geochronology rank: AGE
description: BAVENTIAN
note: See RR/04/04.
in scheme: Division
start: baseQV
end: baseQE
older division of same rank: QN
younger division of same rank: QV
sub divisions: QE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Flandrian Age
type: Concept
has geochronology rank: AGE
description: FLANDRIAN
note: nil
in scheme: Division
start: baseXR
end: baseQH
older division of same rank: nil
younger division of same rank: nil
sub divisions: QF
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Holocene Epoch
type: Concept
has geochronology rank: EPOCH
description: HOLOCENE
note: nil
in scheme: Division
start: baseXR
end: baseQH
older division of same rank: nil
younger division of same rank: nil
sub divisions: QH
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Holocene

Ipswichian Age
type: Concept
has geochronology rank: AGE
description: IPSWICHIAN
note: Contemporaneous with Eemian; MIS 5e; see RR/04/04.
in scheme: Division
start: nil
end: nil
older division of same rank: nil
younger division of same rank: nil
sub divisions: QI
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Ludhamian Age
type: Concept
has geochronology rank: AGE
description: LUDHAMIAN
note: Contemporaneous with Tiglian A; see RR/04/04.
in scheme: Division
start: baseQT
end: nil
older division of same rank: nil
younger division of same rank: QT
sub divisions: QL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 1
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 1
note: nil
in scheme: Division
start: nil
end: baseQMIS001
older division of same rank: QMIS002
younger division of same rank: nil
sub divisions: QMIS001
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 2
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 2
note: nil
in scheme: Division
start: baseQMIS001
end: baseQMIS002
older division of same rank: QMIS003
younger division of same rank: QMIS001
sub divisions: QMIS002
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 3
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 3
note: nil
in scheme: Division
start: baseQMIS002
end: baseQDD
older division of same rank: QMIS004
younger division of same rank: QMIS002
sub divisions: QMIS003
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 4
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 4
note: nil
in scheme: Division
start: baseQDD
end: baseQMIS004
older division of same rank: QMIS005A
younger division of same rank: QMIS003
sub divisions: QMIS004
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 5a
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 5A
note: nil
in scheme: Division
start: baseQMIS004
end: baseQMIS005A
older division of same rank: QMIS005B
younger division of same rank: QMIS004
sub divisions: QMIS005A
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 5b
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 5B
note: nil
in scheme: Division
start: baseQMIS005A
end: baseQMIS005B
older division of same rank: QMIS005C
younger division of same rank: QMIS005A
sub divisions: QMIS005B
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 5c
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 5C
note: nil
in scheme: Division
start: baseQMIS005B
end: baseQMIS005C
older division of same rank: QMIS005D
younger division of same rank: QMIS005B
sub divisions: QMIS005C
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 5d
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 5D
note: nil
in scheme: Division
start: baseQMIS005C
end: nil
older division of same rank: QMIS005E
younger division of same rank: QMIS005C
sub divisions: QMIS005D
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 5e
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 5E
note: nil
in scheme: Division
start: nil
end: nil
older division of same rank: QMIS006
younger division of same rank: QMIS005D
sub divisions: QMIS005E
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 6
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 6
note: nil
in scheme: Division
start: nil
end: baseQMIS006
older division of same rank: QMIS007
younger division of same rank: QMIS005E
sub divisions: QMIS006
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 7
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 7
note: nil
in scheme: Division
start: baseQMIS006
end: baseQMIS007
older division of same rank: QMIS008
younger division of same rank: QMIS006
sub divisions: QMIS007
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 8
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 8
note: nil
in scheme: Division
start: baseQMIS007
end: baseQMIS008
older division of same rank: QMIS009
younger division of same rank: QMIS007
sub divisions: QMIS008
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 9
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 9
note: nil
in scheme: Division
start: baseQMIS008
end: baseQMIS009
older division of same rank: QMIS010
younger division of same rank: QMIS008
sub divisions: QMIS009
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 10
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 10
note: nil
in scheme: Division
start: baseQMIS009
end: nil
older division of same rank: QMIS011
younger division of same rank: QMIS009
sub divisions: QMIS010
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 11
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 11
note: nil
in scheme: Division
start: nil
end: nil
older division of same rank: QMIS012
younger division of same rank: QMIS010
sub divisions: QMIS011
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 12
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 12
note: nil
in scheme: Division
start: nil
end: nil
older division of same rank: QMIS013
younger division of same rank: QMIS011
sub divisions: QMIS012
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 13
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 13
note: nil
in scheme: Division
start: nil
end: baseQMIS013
older division of same rank: QMIS014
younger division of same rank: QMIS012
sub divisions: QMIS013
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 14
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 14
note: nil
in scheme: Division
start: baseQMIS013
end: baseQMIS014
older division of same rank: QMIS015
younger division of same rank: QMIS013
sub divisions: QMIS014
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 15
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 15
note: nil
in scheme: Division
start: baseQMIS014
end: baseQMIS015
older division of same rank: QMIS016
younger division of same rank: QMIS014
sub divisions: QMIS015
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 16
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 16
note: nil
in scheme: Division
start: baseQMIS015
end: baseQMIS016
older division of same rank: QMIS017
younger division of same rank: QMIS015
sub divisions: QMIS016
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 17
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 17
note: nil
in scheme: Division
start: baseQMIS016
end: baseQMIS017
older division of same rank: QMIS018
younger division of same rank: QMIS016
sub divisions: QMIS017
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 18
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 18
note: nil
in scheme: Division
start: baseQMIS017
end: baseQMIS018
older division of same rank: QMIS019
younger division of same rank: QMIS017
sub divisions: QMIS018
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 19
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 19
note: nil
in scheme: Division
start: baseQMIS018
end: baseQ2I
older division of same rank: QMIS020
younger division of same rank: QMIS018
sub divisions: QMIS019
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 20
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 20
note: nil
in scheme: Division
start: baseQ2I
end: baseQMIS020
older division of same rank: QMIS021
younger division of same rank: QMIS019
sub divisions: QMIS020
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 21
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 21
note: nil
in scheme: Division
start: baseQMIS020
end: nil
older division of same rank: QMIS022
younger division of same rank: QMIS020
sub divisions: QMIS021
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 22
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 22
note: nil
in scheme: Division
start: nil
end: baseQMIS022
older division of same rank: QMIS023
younger division of same rank: QMIS021
sub divisions: QMIS022
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 23
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 23
note: nil
in scheme: Division
start: baseQMIS022
end: baseQMIS023
older division of same rank: QMIS024
younger division of same rank: QMIS022
sub divisions: QMIS023
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 24
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 24
note: nil
in scheme: Division
start: baseQMIS023
end: baseQMIS024
older division of same rank: QMIS025
younger division of same rank: QMIS023
sub divisions: QMIS024
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 25
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 25
note: nil
in scheme: Division
start: baseQMIS024
end: baseQMIS025
older division of same rank: QMIS026
younger division of same rank: QMIS024
sub divisions: QMIS025
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 26
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 26
note: nil
in scheme: Division
start: baseQMIS025
end: baseQMIS026
older division of same rank: QMIS027
younger division of same rank: QMIS025
sub divisions: QMIS026
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 27
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 27
note: nil
in scheme: Division
start: baseQMIS026
end: baseQMIS027
older division of same rank: QMIS028
younger division of same rank: QMIS026
sub divisions: QMIS027
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 28
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 28
note: nil
in scheme: Division
start: baseQMIS027
end: baseQMIS028
older division of same rank: QMIS029
younger division of same rank: QMIS027
sub divisions: QMIS028
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 29
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 29
note: nil
in scheme: Division
start: baseQMIS028
end: baseQMIS029
older division of same rank: QMIS030
younger division of same rank: QMIS028
sub divisions: QMIS029
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 30
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 30
note: nil
in scheme: Division
start: baseQMIS029
end: baseQMIS030
older division of same rank: QMIS031
younger division of same rank: QMIS029
sub divisions: QMIS030
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 31
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 31
note: nil
in scheme: Division
start: baseQMIS030
end: baseQMIS031
older division of same rank: QMIS032
younger division of same rank: QMIS030
sub divisions: QMIS031
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 32
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 32
note: nil
in scheme: Division
start: baseQMIS031
end: baseQMIS032
older division of same rank: QMIS033
younger division of same rank: QMIS031
sub divisions: QMIS032
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 33
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 33
note: nil
in scheme: Division
start: baseQMIS032
end: baseQMIS033
older division of same rank: QMIS034
younger division of same rank: QMIS032
sub divisions: QMIS033
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 34
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 34
note: nil
in scheme: Division
start: baseQMIS033
end: baseQMIS034
older division of same rank: QMIS035
younger division of same rank: QMIS033
sub divisions: QMIS034
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 35
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 35
note: nil
in scheme: Division
start: baseQMIS034
end: baseQMIS035
older division of same rank: QMIS036
younger division of same rank: QMIS034
sub divisions: QMIS035
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 36
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 36
note: nil
in scheme: Division
start: baseQMIS035
end: baseQMIS036
older division of same rank: QMIS037
younger division of same rank: QMIS035
sub divisions: QMIS036
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 37
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 37
note: nil
in scheme: Division
start: baseQMIS036
end: baseQMIS037
older division of same rank: QMIS038
younger division of same rank: QMIS036
sub divisions: QMIS037
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 38
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 38
note: nil
in scheme: Division
start: baseQMIS037
end: baseBM
older division of same rank: QMIS039
younger division of same rank: QMIS037
sub divisions: QMIS038
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 39
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 39
note: nil
in scheme: Division
start: baseBM
end: baseQMIS039
older division of same rank: QMIS040
younger division of same rank: QMIS038
sub divisions: QMIS039
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 40
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 40
note: nil
in scheme: Division
start: baseQMIS039
end: baseQMIS040
older division of same rank: QMIS041
younger division of same rank: QMIS039
sub divisions: QMIS040
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 41
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 41
note: nil
in scheme: Division
start: baseQMIS040
end: baseQMIS041
older division of same rank: QMIS042
younger division of same rank: QMIS040
sub divisions: QMIS041
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 42
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 42
note: nil
in scheme: Division
start: baseQMIS041
end: baseQMIS042
older division of same rank: QMIS043
younger division of same rank: QMIS041
sub divisions: QMIS042
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 43
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 43
note: nil
in scheme: Division
start: baseQMIS042
end: baseQMIS043
older division of same rank: QMIS044
younger division of same rank: QMIS042
sub divisions: QMIS043
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 44
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 44
note: nil
in scheme: Division
start: baseQMIS043
end: baseQMIS044
older division of same rank: QMIS045
younger division of same rank: QMIS043
sub divisions: QMIS044
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 45
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 45
note: nil
in scheme: Division
start: baseQMIS044
end: baseQMIS045
older division of same rank: QMIS046
younger division of same rank: QMIS044
sub divisions: QMIS045
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 46
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 46
note: nil
in scheme: Division
start: baseQMIS045
end: baseQMIS046
older division of same rank: QMIS047
younger division of same rank: QMIS045
sub divisions: QMIS046
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 47
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 47
note: nil
in scheme: Division
start: baseQMIS046
end: baseQMIS047
older division of same rank: QMIS048
younger division of same rank: QMIS046
sub divisions: QMIS047
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 48
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 48
note: nil
in scheme: Division
start: baseQMIS047
end: baseQMIS048
older division of same rank: QMIS049
younger division of same rank: QMIS047
sub divisions: QMIS048
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 49
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 49
note: nil
in scheme: Division
start: baseQMIS048
end: baseQMIS049
older division of same rank: QMIS050
younger division of same rank: QMIS048
sub divisions: QMIS049
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 50
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 50
note: nil
in scheme: Division
start: baseQMIS049
end: baseQMIS050
older division of same rank: QMIS051
younger division of same rank: QMIS049
sub divisions: QMIS050
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 51
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 51
note: nil
in scheme: Division
start: baseQMIS050
end: baseQMIS051
older division of same rank: QMIS052
younger division of same rank: QMIS050
sub divisions: QMIS051
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 52
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 52
note: nil
in scheme: Division
start: baseQMIS051
end: baseQMIS052
older division of same rank: QMIS053
younger division of same rank: QMIS051
sub divisions: QMIS052
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 53
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 53
note: nil
in scheme: Division
start: baseQMIS052
end: baseQMIS053
older division of same rank: QMIS054
younger division of same rank: QMIS052
sub divisions: QMIS053
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 54
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 54
note: nil
in scheme: Division
start: baseQMIS053
end: baseQMIS054
older division of same rank: QMIS055
younger division of same rank: QMIS053
sub divisions: QMIS054
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 55
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 55
note: nil
in scheme: Division
start: baseQMIS054
end: nil
older division of same rank: QMIS056
younger division of same rank: QMIS054
sub divisions: QMIS055
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 56
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 56
note: nil
in scheme: Division
start: nil
end: baseQMIS056
older division of same rank: QMIS057
younger division of same rank: QMIS055
sub divisions: QMIS056
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 57
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 57
note: nil
in scheme: Division
start: baseQMIS056
end: baseQMIS057
older division of same rank: QMIS058
younger division of same rank: QMIS056
sub divisions: QMIS057
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 58
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 58
note: nil
in scheme: Division
start: baseQMIS057
end: baseQMIS058
older division of same rank: QMIS059
younger division of same rank: QMIS057
sub divisions: QMIS058
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 59
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 59
note: nil
in scheme: Division
start: baseQMIS058
end: baseQMIS059
older division of same rank: QMIS060
younger division of same rank: QMIS058
sub divisions: QMIS059
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 60
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 60
note: nil
in scheme: Division
start: baseQMIS059
end: baseQMIS060
older division of same rank: QMIS061
younger division of same rank: QMIS059
sub divisions: QMIS060
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 61
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 61
note: nil
in scheme: Division
start: baseQMIS060
end: baseQMIS061
older division of same rank: QMIS062
younger division of same rank: QMIS060
sub divisions: QMIS061
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 62
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 62
note: nil
in scheme: Division
start: baseQMIS061
end: baseQMIS062
older division of same rank: QMIS063
younger division of same rank: QMIS061
sub divisions: QMIS062
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 63
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 63
note: nil
in scheme: Division
start: baseQMIS062
end: baseQMIS063
older division of same rank: QMIS064
younger division of same rank: QMIS062
sub divisions: QMIS063
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 64
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 64
note: nil
in scheme: Division
start: baseQMIS063
end: baseQ1
older division of same rank: QMIS065
younger division of same rank: QMIS063
sub divisions: QMIS064
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 65
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 65
note: nil
in scheme: Division
start: baseQ1
end: baseQMIS065
older division of same rank: QMIS066
younger division of same rank: QMIS064
sub divisions: QMIS065
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 66
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 66
note: nil
in scheme: Division
start: baseQMIS065
end: baseQMIS066
older division of same rank: QMIS067
younger division of same rank: QMIS065
sub divisions: QMIS066
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 67
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 67
note: nil
in scheme: Division
start: baseQMIS066
end: baseQMIS067
older division of same rank: QMIS068
younger division of same rank: QMIS066
sub divisions: QMIS067
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 68
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 68
note: nil
in scheme: Division
start: baseQMIS067
end: baseQMIS068
older division of same rank: QMIS069
younger division of same rank: QMIS067
sub divisions: QMIS068
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 69
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 69
note: nil
in scheme: Division
start: baseQMIS068
end: baseQMIS069
older division of same rank: QMIS070
younger division of same rank: QMIS068
sub divisions: QMIS069
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 70
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 70
note: nil
in scheme: Division
start: baseQMIS069
end: baseQV
older division of same rank: QMIS071
younger division of same rank: QMIS069
sub divisions: QMIS070
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 71
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 71
note: nil
in scheme: Division
start: baseQV
end: baseQMIS071
older division of same rank: QMIS072
younger division of same rank: QMIS070
sub divisions: QMIS071
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 72
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 72
note: nil
in scheme: Division
start: baseQMIS071
end: baseQMIS072
older division of same rank: QMIS073
younger division of same rank: QMIS071
sub divisions: QMIS072
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 73
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 73
note: nil
in scheme: Division
start: baseQMIS072
end: baseQMIS073
older division of same rank: QMIS074
younger division of same rank: QMIS072
sub divisions: QMIS073
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 74
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 74
note: nil
in scheme: Division
start: baseQMIS073
end: baseQMIS074
older division of same rank: QMIS075
younger division of same rank: QMIS073
sub divisions: QMIS074
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 75
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 75
note: nil
in scheme: Division
start: baseQMIS074
end: baseQMIS075
older division of same rank: QMIS076
younger division of same rank: QMIS074
sub divisions: QMIS075
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 76
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 76
note: nil
in scheme: Division
start: baseQMIS075
end: baseQE
older division of same rank: QMIS077
younger division of same rank: QMIS075
sub divisions: QMIS076
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 77
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 77
note: nil
in scheme: Division
start: baseQE
end: baseQMIS077
older division of same rank: QMIS078
younger division of same rank: QMIS076
sub divisions: QMIS077
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 78
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 78
note: nil
in scheme: Division
start: baseQMIS077
end: baseQMIS078
older division of same rank: QMIS079
younger division of same rank: QMIS077
sub divisions: QMIS078
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 79
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 79
note: nil
in scheme: Division
start: baseQMIS078
end: baseQMIS079
older division of same rank: QMIS080
younger division of same rank: QMIS078
sub divisions: QMIS079
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 80
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 80
note: nil
in scheme: Division
start: baseQMIS079
end: baseQMIS080
older division of same rank: QMIS081
younger division of same rank: QMIS079
sub divisions: QMIS080
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 81
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 81
note: nil
in scheme: Division
start: baseQMIS080
end: baseQMIS081
older division of same rank: QMIS082
younger division of same rank: QMIS080
sub divisions: QMIS081
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 82
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 82
note: nil
in scheme: Division
start: baseQMIS081
end: baseQMIS082
older division of same rank: QMIS083
younger division of same rank: QMIS081
sub divisions: QMIS082
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 83
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 83
note: nil
in scheme: Division
start: baseQMIS082
end: baseQMIS083
older division of same rank: QMIS084
younger division of same rank: QMIS082
sub divisions: QMIS083
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 84
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 84
note: nil
in scheme: Division
start: baseQMIS083
end: baseQMIS084
older division of same rank: QMIS085
younger division of same rank: QMIS083
sub divisions: QMIS084
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 85
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 85
note: nil
in scheme: Division
start: baseQMIS084
end: baseQMIS085
older division of same rank: QMIS086
younger division of same rank: QMIS084
sub divisions: QMIS085
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 86
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 86
note: nil
in scheme: Division
start: baseQMIS085
end: baseQMIS086
older division of same rank: QMIS087
younger division of same rank: QMIS085
sub divisions: QMIS086
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 87
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 87
note: nil
in scheme: Division
start: baseQMIS086
end: baseQMIS087
older division of same rank: QMIS088
younger division of same rank: QMIS086
sub divisions: QMIS087
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 88
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 88
note: nil
in scheme: Division
start: baseQMIS087
end: baseQMIS088
older division of same rank: QMIS089
younger division of same rank: QMIS087
sub divisions: QMIS088
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 89
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 89
note: nil
in scheme: Division
start: baseQMIS088
end: baseQT
older division of same rank: QMIS090
younger division of same rank: QMIS088
sub divisions: QMIS089
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 90
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 90
note: nil
in scheme: Division
start: baseQT
end: baseQMIS090
older division of same rank: QMIS091
younger division of same rank: QMIS089
sub divisions: QMIS090
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 91
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 91
note: nil
in scheme: Division
start: baseQMIS090
end: baseQMIS091
older division of same rank: QMIS092
younger division of same rank: QMIS090
sub divisions: QMIS091
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 92
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 92
note: nil
in scheme: Division
start: baseQMIS091
end: baseQMIS092
older division of same rank: QMIS093
younger division of same rank: QMIS091
sub divisions: QMIS092
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 93
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 93
note: nil
in scheme: Division
start: baseQMIS092
end: baseQMIS093
older division of same rank: QMIS094
younger division of same rank: QMIS092
sub divisions: QMIS093
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 94
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 94
note: nil
in scheme: Division
start: baseQMIS093
end: baseQMIS094
older division of same rank: QMIS095
younger division of same rank: QMIS093
sub divisions: QMIS094
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 95
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 95
note: nil
in scheme: Division
start: baseQMIS094
end: nil
older division of same rank: QMIS096
younger division of same rank: QMIS094
sub divisions: QMIS095
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 96
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 96
note: nil
in scheme: Division
start: nil
end: baseQMIS096
older division of same rank: QMIS097
younger division of same rank: QMIS095
sub divisions: QMIS096
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 97
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 97
note: nil
in scheme: Division
start: baseQMIS096
end: baseQMIS097
older division of same rank: QMIS098
younger division of same rank: QMIS096
sub divisions: QMIS097
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 98
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 98
note: nil
in scheme: Division
start: baseQMIS097
end: baseQMIS098
older division of same rank: QMIS099
younger division of same rank: QMIS097
sub divisions: QMIS098
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 99
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 99
note: nil
in scheme: Division
start: baseQMIS098
end: baseQMIS099
older division of same rank: QMIS100
younger division of same rank: QMIS098
sub divisions: QMIS099
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 100
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 100
note: nil
in scheme: Division
start: baseQMIS099
end: baseBP
older division of same rank: QMIS101
younger division of same rank: QMIS099
sub divisions: QMIS100
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 101
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 101
note: nil
in scheme: Division
start: baseBP
end: baseQMIS101
older division of same rank: QMIS102
younger division of same rank: QMIS100
sub divisions: QMIS101
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 102
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 102
note: nil
in scheme: Division
start: baseQMIS101
end: baseQMIS102
older division of same rank: QMIS103
younger division of same rank: QMIS101
sub divisions: QMIS102
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Marine Isotope Stage 103
type: Concept
has geochronology rank: MIS
description: MARINE ISOTOPE STAGE 103
note: nil
in scheme: Division
start: baseQMIS102
end: baseQ
older division of same rank: nil
younger division of same rank: QMIS102
sub divisions: QMIS103
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Antian/Bramertonian Age
type: Concept
has geochronology rank: AGE
description: ANTIAN/BRAMERTONIAN
note: Contemporaneous with Tiglian C1-4b; see RR/04/04.
in scheme: Division
start: baseQE
end: baseQN
older division of same rank: QT
younger division of same rank: QE
sub divisions: QN
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Wolstonian Age
type: Concept
has geochronology rank: AGE
description: WOLSTONIAN
note: Contemporaneous with Saalian; MIS 6-10; see RR/04/04.
in scheme: Division
start: nil
end: nil
older division of same rank: nil
younger division of same rank: nil
sub divisions: QO
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Pleistocene Epoch
type: Concept
has geochronology rank: EPOCH
description: PLEISTOCENE
note: nil
in scheme: Division
start: baseQH
end: baseQ
older division of same rank: NP
younger division of same rank: QH
sub divisions: QP
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Pre-Ludhamian Age
type: Concept
has geochronology rank: AGE
description: PRE-LUDHAMIAN
note: See RR/04/04.
in scheme: Division
start: nil
end: baseQ
older division of same rank: nil
younger division of same rank: nil
sub divisions: QR
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Pastonian Age
type: Concept
has geochronology rank: AGE
description: PASTONIAN
note: Contemporaneous with Tiglian C5-6; see RR/04/04.
in scheme: Division
start: nil
end: baseQ1
older division of same rank: nil
younger division of same rank: nil
sub divisions: QS
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Thurnian Age
type: Concept
has geochronology rank: AGE
description: THURNIAN
note: Contemporaneous with Tiglian B; see RR/04/04.
in scheme: Division
start: baseQN
end: baseQT
older division of same rank: QL
younger division of same rank: QN
sub divisions: QT
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Pre-Pastonian Age
type: Concept
has geochronology rank: AGE
description: PRE-PASTONIAN
note: See RR/04/04.
in scheme: Division
start: baseQ1
end: baseQV
older division of same rank: QE
younger division of same rank: nil
sub divisions: QV
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Hoxnian Age
type: Concept
has geochronology rank: AGE
description: HOXNIAN
note: Contemporaneous with Holsteinian; MIS 11; see RR/04/04.
in scheme: Division
start: nil
end: nil
older division of same rank: nil
younger division of same rank: nil
sub divisions: QX
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Early Palaeozoic Sub-era
type: Concept
has geochronology rank: SUB-ERA
description: EARLY PALAEOZOIC
note: nil
in scheme: Division
start: baseRL
end: baseFH
older division of same rank: nil
younger division of same rank: RL
sub divisions: RE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Late Palaeozoic Sub-era
type: Concept
has geochronology rank: SUB-ERA
description: LATE PALAEOZOIC
note: nil
in scheme: Division
start: baseMZ
end: baseRL
older division of same rank: RE
younger division of same rank: nil
sub divisions: RL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Palaeozoic Era
type: Concept
has geochronology rank: ERA
description: PALAEOZOIC
note: nil
in scheme: Division
start: baseMZ
end: baseFH
older division of same rank: AZ
younger division of same rank: MZ
sub divisions: RZ
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Silurian Period
type: Concept
has geochronology rank: PERIOD
description: SILURIAN
note: nil
in scheme: Division
start: baseRL
end: baseS
older division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/O
younger division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/D
sub divisions: http://data.bgs.ac.uk/ref/Geochronology/DivisionList/S
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Silurian

Aeronian Age
type: Concept
has geochronology rank: AGE
description: AERONIAN
note: nil
in scheme: Division
start: baseST
end: baseSA
older division of same rank: SR
younger division of same rank: ST
sub divisions: SA
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Ludfordian Age
type: Concept
has geochronology rank: AGE
description: LUDFORDIAN
note: nil
in scheme: Division
start: baseSO
end: baseSD
older division of same rank: SG
younger division of same rank: nil
sub divisions: SD
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Gorstian Age
type: Concept
has geochronology rank: AGE
description: GORSTIAN
note: nil
in scheme: Division
start: baseSD
end: baseSU
older division of same rank: SH
younger division of same rank: SD
sub divisions: SG
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Homerian Age
type: Concept
has geochronology rank: AGE
description: HOMERIAN
note: nil
in scheme: Division
start: baseSU
end: baseSH
older division of same rank: SS
younger division of same rank: SG
sub divisions: SH
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Llandovery Epoch
type: Concept
has geochronology rank: EPOCH
description: LLANDOVERY
note: nil
in scheme: Division
start: baseSW
end: baseS
older division of same rank: nil
younger division of same rank: SW
sub divisions: SL
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Pridoli Epoch
type: Concept
has geochronology rank: EPOCH
description: PRIDOLI
note: nil
in scheme: Division
start: baseRL
end: baseSO
older division of same rank: SU
younger division of same rank: DL
sub divisions: SO
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Rhuddanian Age
type: Concept
has geochronology rank: AGE
description: RHUDDANIAN
note: nil
in scheme: Division
start: baseSA
end: baseS
older division of same rank: OH
younger division of same rank: SA
sub divisions: SR
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Sheinwoodian Age
type: Concept
has geochronology rank: AGE
description: SHEINWOODIAN
note: nil
in scheme: Division
start: baseSH
end: baseSW
older division of same rank: ST
younger division of same rank: SH
sub divisions: SS
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Telychian Age
type: Concept
has geochronology rank: AGE
description: TELYCHIAN
note: nil
in scheme: Division
start: baseSW
end: baseST
older division of same rank: SA
younger division of same rank: SS
sub divisions: ST
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Ludlow Epoch
type: Concept
has geochronology rank: EPOCH
description: LUDLOW
note: nil
in scheme: Division
start: baseSO
end: baseSU
older division of same rank: SW
younger division of same rank: SO
sub divisions: SU
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Wenlock Epoch
type: Concept
has geochronology rank: EPOCH
description: WENLOCK
note: nil
in scheme: Division
start: baseSU
end: baseSW
older division of same rank: SL
younger division of same rank: SU
sub divisions: SW
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Triassic Period
type: Concept
has geochronology rank: PERIOD
description: TRIASSIC
note: nil
in scheme: Division
start: baseJ
end: baseMZ
older division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/P
younger division of same rank: http://data.bgs.ac.uk/id/Geochronology/Rank/J
sub divisions: http://data.bgs.ac.uk/ref/Geochronology/DivisionList/T
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
see also: http://www.bbc.co.uk/nature/history_of_the_earth/Triassic

Anisian Age
type: Concept
has geochronology rank: AGE
description: ANISIAN
note: nil
in scheme: Division
start: baseTD
end: baseTM
older division of same rank: nil
younger division of same rank: TD
sub divisions: TA
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Carnian Age
type: Concept
has geochronology rank: AGE
description: CARNIAN
note: nil
in scheme: Division
start: baseTN
end: baseTU
older division of same rank: TD
younger division of same rank: TN
sub divisions: TC
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Ladinian Age
type: Concept
has geochronology rank: AGE
description: LADINIAN
note: nil
in scheme: Division
start: baseTU
end: baseTD
older division of same rank: TA
younger division of same rank: TC
sub divisions: TD
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Early Triassic Epoch
type: Concept
has geochronology rank: EPOCH
description: EARLY TRIASSIC
note: nil
in scheme: Division
start: baseTM
end: baseMZ
older division of same rank: nil
younger division of same rank: TM
sub divisions: TE
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Induan Age
type: Concept
has geochronology rank: AGE
description: INDUAN
note: nil
in scheme: Division
start: baseTO
end: baseMZ
older division of same rank: nil
younger division of same rank: TO
sub divisions: TI
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Scythian Age [Obsolete age term]
type: Concept
has geochronology rank: AGE
description: SCYTHIAN [OBSOLETE AGE TERM: USE EARLY TRIASSIC]
note: Not on 2009 BGS Geological Time Chart; use TE Early Triassic.
in scheme: Division
start: baseTM
end: baseMZ
older division of same rank: nil
younger division of same rank: TA
sub divisions: TL
has current status: OBSOLETE
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Mid Triassic Epoch
type: Concept
has geochronology rank: EPOCH
description: MID TRIASSIC
note: nil
in scheme: Division
start: baseTU
end: baseTM
older division of same rank: TE
younger division of same rank: TU
sub divisions: TM
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Norian Age
type: Concept
has geochronology rank: AGE
description: NORIAN
note: nil
in scheme: Division
start: baseTR
end: baseTN
older division of same rank: TC
younger division of same rank: TR
sub divisions: TN
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Olenekian Age
type: Concept
has geochronology rank: AGE
description: OLENEKIAN
note: nil
in scheme: Division
start: baseTM
end: baseTO
older division of same rank: TI
younger division of same rank: TA
sub divisions: TO
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Rhaetian Age
type: Concept
has geochronology rank: AGE
description: RHAETIAN
note: nil
in scheme: Division
start: baseJ
end: baseTR
older division of same rank: TN
younger division of same rank: JH
sub divisions: TR
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Late Triassic Epoch
type: Concept
has geochronology rank: EPOCH
description: LATE TRIASSIC
note: nil
in scheme: Division
start: baseJ
end: baseTU
older division of same rank: TM
younger division of same rank: JL
sub divisions: TU
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.

Geological Time
type: Concept
has geochronology rank: nil
description: GEOLOGICAL TIME
note: nil
in scheme: Division
top concept of: Division
start: baseXR
end: nil
older division of same rank: nil
younger division of same rank: nil
sub divisions: XX
has current status: CURRENT
access rights: The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.