. "318.0"^^ . "Gubbin And Balls Ironstone (South Staffordshire)"@en . "319.0"^^ . . . "stable"@en . "Gubbin And Balls Ironstone (South Staffordshire)"@en . . . . "GABI"@en . "Bedrock. Occurs onshore. Formed during the Langsettian Substage (Carboniferous Period) (319-318 Ma BP)."@en .