. "330.9"^^ . "Limestone. Stratified bedrock. Occurs onshore. Deposited during the Asbian Substage (Carboniferous Period) (337-330.9 Ma BP)."@en . . . . . "stable"@en . "Limestone."@en . "Astbury Limestone Member"@en . "337.0"^^ . . . . "Astbury Limestone Member"@en . "AYLM"@en .