. "Ardnamona Sandstone Formation"@en . "344.5"^^ . . . "Sandstone. Stratified bedrock. Occurs onshore. Deposited during the Chadian Substage (Carboniferous Period) (346.7-344.5 Ma BP)."@en . . "AASA"@en . "346.7"^^ . . . "Ardnamona Sandstone Formation"@en . "stable"@en . "Sandstone."@en . .