"BYDN"@en . "stable"@en . . . "Ballydurnian Breccia Formation"@en . . . "Breccia."@en . "359.3"^^ . "Ballydurnian Breccia Formation"@en . "298.9"^^ . . "Breccia. Stratified bedrock. Occurs onshore. Deposited during the Carboniferous Period (359.3-298.9 Ma BP)."@en . . .