"Beeston Coal (West Yorkshire)"@en . "BSN"@en . . . "Coal. Stratified bedrock. Occurs onshore. Deposited during the Langsettian Substage (Carboniferous Period) (319-318 Ma BP)."@en . "stable"@en . . . . "Beeston Coal (West Yorkshire)"@en . "318.0"^^ . . . "Coal."@en . . "319.0"^^ .