"318.0"^^ . "Embury Shale"@en . . . . "319.0"^^ . "EMY"@en . "Mudstone. Bedrock. Occurs onshore. Formed during the Langsettian Substage (Carboniferous Period) (319-318 Ma BP)."@en . . . "stable"@en . . "Black sulphurous shaly mudstones with calcareous nodules yielding goniatites characteristic of the Subcrenatum Marine Band."@en . . "Embury Shale"@en . .