"DICG"@en . . . "Coal. Stratified bedrock. Occurs onshore. Deposited during the Duckmantian Substage (Carboniferous Period) (318-314.75 Ma BP)."@en . . "Dicky Gobbler Coal (South Derbyshire)"@en . "318.0"^^ . "stable"@en . . . . "Coal."@en . "Dicky Gobbler Coal (South Derbyshire)"@en . . "314.75"^^ .