. . "Limestone. Stratified bedrock. Occurs onshore. Deposited during the Asbian Substage (Carboniferous Period) (337-330.9 Ma BP)."@en . "CTB"@en . . . "330.9"^^ . "Limestone."@en . "Clattering Band"@en . . "Kingbridge Limestone"@en . . "337.0"^^ . . . . "Clattering Band"@en . "stable"@en .