. . "Sandstone. Stratified bedrock. Occurs onshore. Deposited during the Llandovery Epoch (Silurian Period) (443.1-432.9 Ma BP)."@en . "Drumyork Flags Formation"@en . . . . . "Glenfoot Beds [Obsolete: use DYF]"@en . "Drumyork Flags Formation"@en . . "stable"@en . "Blackwood Beds [Obsolete: use DYF]"@en . "432.9"^^ . "Bargany Formation [Obsolete: use DYF]"@en . "Rests conformably on Lauchlan Formation."@en . "443.1"^^ . "Grey-green sandstone, flaggy towards top."@en . . . "Drumyork Flags [Obsolete: use DYF]"@en . . . "610m"@en . . "Conformably overlain by Blair Shale."@en . "DYF"@en .