. . "426.7"^^ . "stable"@en . "Bedrock. Occurs onshore. Formed during the Ludlow Epoch (Silurian Period) - to - Early Devonian Epoch (Devonian Period) (426.7-394.3 Ma BP)."@en . . . "394.3"^^ . . "Church Door Buttress Breccias"@en . . "Church Door Buttress Breccias"@en . "CDBB"@en .