. "Composite consisting of two or more rock units. See the entries for the constituent units for more information."@en . "CIHC"@en . . "Bedrock. Occurs onshore. Formed during the Berriasian Age - to - Hauterivian Age (Cretaceous Period) (143.1-126.5 Ma BP)."@en . . "Claxby Ironstone Formation"@en . . "Claxby Ironstone Formation and Hundleby Clay Member (Undifferentiated)"@en . "Claxby Ironstone Formation and Hundleby Clay Member (Undifferentiated)"@en . . "Hundleby Clay Member"@en . . "126.5"^^ . "143.1"^^ . "stable"@en . .