. "Claxby Ironstone Formation, Tealby Formation And Roach Formation (Undifferentiated)"@en . "Mudstone and siliciclastic argillaceous rock with subsidiary ironstone. Bedrock. Occurs onshore. Formed during the Valanginian Age - to - Barremian Age (Cretaceous Period) (137.7-121.4 Ma BP)."@en . "137.7"^^ . "CITR"@en . "121.4"^^ . . . . "Claxby Ironstone Formation, Tealby Formation And Roach Formation (Undifferentiated)"@en . "stable"@en . .