. "346.7"^^ . . "stable"@en . "344.5"^^ . . . . "Coppy Hill Limestone"@en . "CPYL"@en . . "Bedrock. Occurs onshore. Formed during the Chadian Substage (Carboniferous Period) (346.7-344.5 Ma BP)."@en . "Coppy Hill Limestone"@en .