"Dura Den Fish Bed [Obsolete: use DDF]"@en . "The top of the coarser-grained sandstone within the Glenvale Sandstone Formation."@en . . "Drawn at the conformable upward passage from siltstone and sandstones of the Dura Den Member to the white or cream sandstones of the Knox Pulpit Sandstone Formation."@en . . "Red, cream and green siltstones, alternating with fine-grained cream sandstones, coarser pebbly sandstones and thin partings of red or green mudstone."@en . . . . "Approximately 40 m thick."@en . "Dura Den Formation [Obsolete: use DDF]"@en . . . "Sandstone and siltstone with subsidiary mudstone and pebbly (gravelly) sandstone. Stratified bedrock. Occurs onshore. Deposited during the Late Devonian Epoch (Devonian Period) (378.9-359.3 Ma BP)."@en . "359.3"^^ . . "Dura Den Member"@en . "Dura Den Member"@en . . . "378.9"^^ . "stable"@en . "DDF"@en .