. "The Cormorant Formation is conformably overlain by basal Jurassic sediments of the Statfjord Formation (Banks Group) over large parts of the Beryl Embayment, and the East Shetland Basin close to the UK/Norway median line (Richards et al., 1993). Elsewhere, the formation subcrops younger Jurassic or Cretaceous strata (Lervik et al., 1989, fig.3), and the boundary is a sharp lithological transition and wireline-log break (e.g. 211/13- 1). In such areas, uppermost Triassic primary red beds are presumed to have undergone chemical reduction, as they are grey or greenish grey in colour in many sections."@en . "stable"@en . . . "CORM"@en . . . . "The Cormorant Formation is composed of white, pale grey, greenish grey, brown, and reddish brown sandstones, with red, reddish brown, greenish grey, and minor dark grey, purple, and white mudstones and rare thin beds of calcilutite and limestone. Sections at the centre of the East Shetland Basin and in parts of the Beryl Embayment are dominated by mudstone, whereas the formation is largely composed of sandstone near the East Shetland Platform and Crawford Spur. The coarsest and least sorted sandstones occur in the west, where they are locally underlain by conglomerate composed of pebbles of sandstone, shale, and of metamorphic and granitic basement rock types in a coarse sandy matrix. The sandstones locally contain grains of feldspar towards the base of the formation, and of glauconite or chlorite at higher levels. The sediments are commonly micaceous and sometimes calcareous. The limestones are white, pale grey, pale brown or pink, and are commonly argillaceous; most have a microcrystalline or cryptocrystalline texture. \r\n\r\nMany sections display upward-coarsening cycles over part or all of the succession, with individual cycles ranging from about 50 m to hundreds of metres in thickness."@en . "In central parts of the Beryl Embayment and the East Shetland Basin, the Cormorant Formation overlies Upper Permian clastics or carbonate-anhydrite sequences (e.g. 9/13a-22) or, locally, salts of the Shearwater Salt Formation. In such sections, the boundary is marked by a distinct downward increase in velocity. Over the Crawford Spur and along the western margin of the East Shetland Basin, the Cormorant Formation rests on Devonian strata or on metamorphic or granitic basement."@en . "Thickness variations of the Cormorant Formation may locally exceed 2000 m from one fault block to another (Fisher and Mudge, 1990). The greatest recorded thickness of Triassic sediments in the UK sector is 1745 m in well 211/29-5, which terminated in the Ladinian. The Cormorant Formation is about 1500 m thick in well 3/3-4A, but is less than 250 m thick nearby in parts of block 3/12. Well 9/13a-22 recorded over 1000 m of the Cormorant Formation in a faulted section near the centre of the Beryl Embayment (Dean, 1993)."@en . "Mudstone and sandstone and trace limestone. Stratified bedrock. Occurs offshore. Deposited during the Early Triassic Epoch (Triassic Period) - to - Hettangian Age (Jurassic Period) (251.9-199.5 Ma BP)."@en . "Cormorant Formation"@en . . "Cormorant Formation"@en . "199.5"^^ . . . . "251.9"^^ . .