The dataset is made freely available for access, e.g. via the Internet. Either no third party data / information is contained in the dataset or BGS has secured written permission from the owner(s) of any third party data / information contained in the dataset to make the dataset freely accessible.
A system by which geochronological divisions are defined
BGS Approved Geochronology Scheme
BGS APPROVED GEOCHRONOLOGY. SEE BGS GEOLOGICAL TIMECHART. SCHEME
British Regional Carboniferous Scheme
BRITISH REGIONAL CARBONIFEROUS SCHEME
British Regional Cambrian Scheme
BRITISH REGIONAL CAMBRIAN SCHEME
Marine Isotope Stage Scheme
MARINE ISOTOPE STAGE SCHEME
British Regional Ordovician Scheme
BRITISH REGIONAL ORDOVICIAN SCHEME
British Offshore Quaternary Chronostratigraphy Scheme
British Onshore Quaternary Chronostratigraphy Scheme