"319.0"^^ . . . "Easton Seven Feet Coal (Bristol Area)"@en . . "Coal. Stratified bedrock. Occurs onshore. Deposited during the Langsettian Substage (Carboniferous Period) (319-318 Ma BP)."@en . . . . "stable"@en . . "Easton Seven Feet Coal (Bristol Area)"@en . . "Coal."@en . "ESFC"@en . "318.0"^^ .