"Bottom Ryhope Five Quarter Coal (Northumberland)"@en . . "BRFQ"@en . . . . . "Bottom Ryhope Five Quarter Coal (Northumberland)"@en . "stable"@en . "318.0"^^ . . . "Coal."@en . "314.75"^^ . . "Coal. Stratified bedrock. Occurs onshore. Deposited during the Duckmantian Substage (Carboniferous Period) (318-314.75 Ma BP)."@en .