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Lexicon themes
BGS Lexicon of Named Rock Units: Rock Type Themes
Artificial
Artificial (including all anthropogenic deposits and excavations)
Bedrock
Bedrock (comprising the crag formations of East Anglia and all pre-Quaternary formations)
Mass Movement
Mass Movement (comprising landslide deposits)
Not Applicable
Not applicable
Not Entered
We have not assigned a value yet (and it might not be applicable)
Superficial
Superficial (comprising deposits of Quaternary age except for the crag formations of East Anglia)