"Armadale Upper Cannel Coal (Central Coalfield)"@en . . . . "Coal. Stratified bedrock. Occurs onshore. Deposited during the Langsettian Substage (Carboniferous Period) (319-318 Ma BP)."@en . "ARUC"@en . "stable"@en . . "Armadale Upper Cannel Coal (Central Coalfield)"@en . . "318.0"^^ . . . "Coal."@en . "319.0"^^ . .