. "Coal. Stratified bedrock. Occurs onshore. Deposited during the Langsettian Substage (Carboniferous Period) (319-318 Ma BP)."@en . . . "CUSF"@en . . . "stable"@en . . "Seventeen Fathom Coal (Cumnock; South Ayrshire)"@en . "Coal."@en . "318.0"^^ . "319.0"^^ . . . "Seventeen Fathom Coal (Cumnock; South Ayrshire)"@en .