. "344.5"^^ . . . . "CLLK"@en . "Clitheroe Limestone Formation (Knoll-Reef)"@en . "Limestone."@en . "Clitheroe Limestone Formation (Knoll-Reef)"@en . . . "stable"@en . . . "Limestone. Stratified bedrock. Occurs onshore. Deposited during the Chadian Substage (Carboniferous Period) (346.7-344.5 Ma BP)."@en . "346.7"^^ .