. . . "stable"@en . . "Armagh Group"@en . "ARMA"@en . "Armagh Group"@en . . "346.7"^^ . "Stratified bedrock. Occurs onshore. Deposited during the Chadian Substage - to - Brigantian Substage (Carboniferous Period) (346.7-330.3 Ma BP)."@en . . "330.3"^^ .