"Volcaniclastic-sandstone. Stratified bedrock. Occurs onshore. Deposited during the Caradoc Series (Ordovician Period) (458.2-449.75 Ma BP)."@en . "Blind Cove Sandstone Member"@en . "Base (probably conformable) of lowest of a series of thick units (2-25m) of pebbly sandstone, resting on bedded sandstone (undivided) of the Deepdale Sandstone Formation."@en . . . "Pebbly volcaniclastic sandstone with intercalations of bedded fine- to coarse-grained volcaniclastic sandstone."@en . "Blind Cove Member [Obsolete: use BLCV]"@en . "Overlain either by ignimbrite (St Sunday Crag Member) or breccia (Blake Brow Member)."@en . . . "stable"@en . "458.2"^^ . . . . "200m (maximum)"@en . "Blind Cove Sandstone Member"@en . . "449.75"^^ . . "BLCV"@en .