"stable"@en . "BSB"@en . "Limestone."@en . "Basket Shell Bed"@en . . . "Basket Shell Bed"@en . . "330.3"^^ . . . . . "346.7"^^ . "Limestone. Stratified bedrock. Occurs onshore. Deposited during the Visean Age (Carboniferous Period) (346.7-330.3 Ma BP)."@en . . . "Cot Castle Shell Bed"@en .