Triassic lithostratigraphy of East Greenland between Scoresby Sund and Kejser Franz Josephs Fjord

Abstract

The lithostratigraphic scheme currently in use for the Triassic rocks in Jameson Land and ScoresbyLand (70°25'-72°N) is revised and extended to cover areas to the north of Kong Oscars Fjord, up to Kejser Franz Josephs Fjord (73°15'N). The Triassic sediments (1000-1700 m thick) belong to the Scoresby Land Group which is divided into two subgroups (redefined) and four formations: the marine Wordie Creek, and the mainly continental Pingo Dal (redefined), Gipsdalen (redefined) and Fleming Fjord Formations. These formations are here subdivided into a total of 12 members and 4 beds. Four members (the Svinhufvuds Bjerge, Ødepas, Kolledalen and Vega Sund Members) and four beds (Gråklint, Sporfjeld, Pingel Dal and Tait Bjerg Beds) are new. Three members (the Paradigmabjerg, Solfaldsdal and Kap Seaforth Members) are redefined. The lithostratigraphic succession and the Triassic depositional environments in East Greenland are briefly discussed and compared with other Triassic sequences in the North Sea area.