. . . "Carnbroe Marine Band (Central Coalfield)"@en . "318.0"^^ . . "CEMB"@en . "Carnbroe Marine Band (Central Coalfield)"@en . "314.75"^^ . "Shelly mudstone."@en . "Shelly mudstone. Stratified bedrock. Occurs onshore. Deposited during the Duckmantian Substage (Carboniferous Period) (318-314.75 Ma BP)."@en . . "stable"@en . . . .