"Coal 1'8\" - Dark fireclay 1' 6\" - Light fireclay 5' 9\" - Sandstone 2'7\"."@en . "7'3\" (2.2 metres)."@en . . . "Coal and sandstone. Stratified bedrock. Occurs onshore. Deposited during the Namurian Stage (Carboniferous Period) (330.3-319 Ma BP)."@en . . . "Conformable."@en . . "330.3"^^ . "Goodockhill Fireclay (Central Coalfield)"@en . . "Goodockhill Fireclay (Central Coalfield)"@en . "stable"@en . . "319.0"^^ . "Conformable."@en . "GOFC"@en .