"319.0"^^ . . . . . "The base of the first sandstone or sandstones above the Subcrenatum Marine Band (the base of the Pennine Lower Coal Measures Formation)."@en . "The top of the last main sandstone above the Subcrenatum Marine Band (the base of the Pennine Lower Coal Measures Formation) and below the Listeri Marine Band."@en . . "Crawshaw Sandstone"@en . . . "318.0"^^ . "stable"@en . . "Soft Bed Flags"@en . "Medium to coarse-grained, locally pebbly sandstone, massive or cross-bedded."@en . "Crawshaw Sandstone"@en . "Sandstone with subsidiary mudstone and siltstone. Stratified bedrock. Occurs onshore. Deposited during the Langsettian Substage (Carboniferous Period) (319-318 Ma BP)."@en . "CRS"@en . "Up to 55 thick."@en . .