. . . . "Coal. Stratified bedrock. Occurs onshore. Deposited during the Asbian Substage (Carboniferous Period) (337-330.9 Ma BP)."@en . "stable"@en . "Shilburnhaugh Coal"@en . . "337.0"^^ . . . . "Bearsmouth Or Thorneyburn Coal"@en . "Bearsmouth Or Thorneyburn Coal"@en . "Coal."@en . "BMTBC"@en . "330.9"^^ . .