"CMFL"@en . . "Stratified bedrock. Occurs onshore. Deposited during the Campanian Age (Cretaceous Period) (83.7-72.2 Ma BP)."@en . . "83.7"^^ . . "Charmandean Flint"@en . "72.2"^^ . . . "Charmandean Flint"@en . "stable"@en . . . .