. "stable"@en . "451.25"^^ . "Sandstone and dark grey graptolitic shale."@en . "At least 45m"@en . "Overlain by the South Shore Formation of the Whitehouse Subgroup."@en . . . . . . "BAY"@en . "Whitehouse Beds [Obsolete: use WHE, BAY]"@en . "Distinguished from the rest of the Ardwell Farm Formation below, by the incoming of dark grey graptolite-bearing shale."@en . . . . "Bay Member"@en . . "Ardwell Flags Formation (Topmost Beds)"@en . "Cascade Member"@en . "Mudstone and sandstone. Stratified bedrock. Occurs onshore. Deposited during the Streffordian Stage (Ordovician Period) (451.25-449.75 Ma BP)."@en . "449.75"^^ . "Bay Member"@en . .