"394.3"^^ . "stable"@en . "Bedrock. Occurs onshore. Formed during the Early Devonian Epoch (Devonian Period) (419-394.3 Ma BP)."@en . . . . . . . "Grainsgill Greisen"@en . "GRAI"@en . "419.0"^^ . "Grainsgill Greisen"@en .