"Coal."@en . . "CSFC"@en . "Canonbie Seven Foot Coal"@en . . "Canonbie Seven Foot Coal"@en . . . "318.0"^^ . . . "stable"@en . . "Coal. Stratified bedrock. Occurs onshore. Deposited during the Duckmantian Substage (Carboniferous Period) (318-314.75 Ma BP)."@en . "314.75"^^ . .