Erosional unconformity at the base of marine Lower Triassic at Wegener Halvø, central East Greenland

Abstract

The Permian-Triassic boundary in East Greenland has been studied mainly in the areas of Kap Stosch (Nielsen, 1935; Teichert & Kummel, 1973) and Wegener Halvø (Triimpy, 1961; Grasmiick & Triimpy, 1%9), and to alesser extent in western Scoresby Land (AelIen, in Triimpy, 1%1; Perch-Nielsen et al., 1972, 1974). According to Nielsen (1935) the boundary is not recognisable in the westernmost exposures at Kap Stosch where the lowermost Triassic Glyptophiceras triviale Zone was found. Further to the east the boundary is marked by a sharp change in facies from limy or shaly (Upper Permian) to sandy (Lower Triassic) deposits, the G. triviale Zone is missing, and locally a minor conglomerate appears at the base of the Triassic.