. "Fleswick Anhydrite"@en . . "251.9"^^ . . . . "Fleswick Anhydrite"@en . "FLWA"@en . . "274.4"^^ . "Bedrock. Occurs onshore. Formed during the Guadalupian Epoch - to - Lopingian Epoch (Permian Period) (274.4-251.9 Ma BP)."@en . "stable"@en .