. "HEBA"@en . . "449.75"^^ . "458.2"^^ . "Helen's Bay Formation"@en . . "Stratified bedrock. Occurs onshore. Deposited during the Caradoc Series (Ordovician Period) (458.2-449.75 Ma BP)."@en . "stable"@en . . "Helen's Bay Formation"@en . . . . .