Lexicon themes
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type: ConceptScheme
title: BGS Lexicon of Named Rock Units: Rock Type Themes

Artificial
type: Concept
in scheme: Lexicon themes
comment: Artificial (including all anthropogenic deposits and excavations)

Bedrock
type: Concept
in scheme: Lexicon themes
comment: Bedrock (comprising the crag formations of East Anglia and all pre-Quaternary formations)

Mass Movement
type: Concept
in scheme: Lexicon themes
comment: Mass Movement (comprising landslide deposits)

Not Applicable
type: Concept
in scheme: Lexicon themes
comment: Not applicable

Not Entered
type: Concept
in scheme: Lexicon themes
comment: We have not assigned a value yet (and it might not be applicable)

Superficial
type: Concept
in scheme: Lexicon themes
comment: Superficial (comprising deposits of Quaternary age except for the crag formations of East Anglia)