. . . "Coatbridge Musselband Ironstone"@en . . "314.75"^^ . . "COMI"@en . . . "Shelly Ironstone."@en . "Shelly Ironstone. Stratified bedrock. Occurs onshore. Deposited during the Duckmantian Substage (Carboniferous Period) (318-314.75 Ma BP)."@en . "Coatbridge Musselband Ironstone"@en . . "stable"@en . "318.0"^^ .