"Red-brown mudstone with subordinate, but locally thick, beds of red-brown and grey-green, fine- to medium-grained sandstone."@en . "Ashow Formation"@en . "274.4"^^ . . . . . "stable"@en . . "Ashow Group [Obsolete: use AW]"@en . "Up to 250m in Sandy Lane and Barford boreholes."@en . . "Ashow Formation"@en . "AW"@en . . "298.9"^^ . "Mudstone with subsidiary sandstone. Stratified bedrock. Occurs onshore. Deposited during the Cisuralian Epoch (Permian Period) (298.9-274.4 Ma BP)."@en . "Taken at the base of the unconformable Bromsgrove Sandstone Formation (Triassic) in the type area."@en . . . "Taken at the incoming of a thick succession of red mudstone (50 to 65m thick) above the Kenilworth Sandstone Formation."@en .