. "330.9"^^ . "Cot Castle Blackband Ironstone"@en . "Stratified bedrock. Occurs onshore. Deposited during the Brigantian Substage (Carboniferous Period) (330.9-330.3 Ma BP)."@en . "Cot Castle Blackband Ironstone"@en . "CCBB"@en . . . . . . "330.3"^^ . . "stable"@en . .