"CLSC"@en . . . "Sandstone. Bedrock. Occurs onshore. Formed during the Pragian Age (Devonian Period) (412.4-410.5 Ma BP)."@en . . "410.5"^^ . "Cephalaspis Sandstone-Cornstone"@en . . "stable"@en . "412.4"^^ . "Sandstone."@en . . "Cephalaspis Sandstone-Cornstone"@en . .