. "458.2"^^ . . . . "Godir Tudur Mudstone Member"@en . "Passes conformably upwards into the main part of the Dinas Island Formation"@en . "449.75"^^ . "Conformably overlies turbidite sandstones within the main part of the Dinas Island Formation"@en . . "GTMU"@en . "Mudstone. Stratified bedrock. Occurs onshore. Deposited during the Caradoc Series (Ordovician Period) (458.2-449.75 Ma BP)."@en . "Interbedded dark grey turbiditic and hemipelagic mudstones"@en . "Godir Tudur Mudstone Member"@en . . . . "stable"@en . "To 50m"@en .