. "Silty mudstones."@en . "Doularg Formation"@en . "DOUL"@en . "Silty mudstone. Stratified bedrock. Occurs onshore. Deposited during the Caradoc Series (Ordovician Period) (458.2-449.75 Ma BP)."@en . . "Faulted against the Albany Group."@en . . . . . "24m+"@en . "stable"@en . . . "458.2"^^ . . . "Doularg Formation"@en . . "449.75"^^ . "Conformably overlies another part of the Albany Group."@en .