"Marginal Reef Limestones [Obsolete: use CCOE]"@en . . "Cracoe Limestone Formation"@en . . "330.3"^^ . "Total thickness not proved, but in excess of 100m at the type locality."@en . . . "Limestone. Stratified bedrock. Occurs onshore. Deposited during the Holkerian Substage - to - Brigantian Substage (Carboniferous Period) (343-330.3 Ma BP)."@en . "343.0"^^ . "Cracoe Limestone Formation"@en . . "CCOE"@en . "The lower boundary has not been proved, but it is likely to comprise reef limestones of the Cracoe Limestone Formation resting upon the bedded, medium to medium-dark grey limestone of the Scaleber Quarry Limestone Member."@en . "Medium and medium-pale grey limestones ranging from organic boundstones to packstones and wackestones with a variable grainsize depending on the bioclastic components."@en . . "The upper boundary is a marked unconformity, with the reef limestones of the Cracoe Limestone Formation overlain by dark grey mudstones of the Bowland Shale Formation."@en . "stable"@en . .