Cambro–Ordovician rocks of C. H. Ostenfeld Nunatak, northern East Greenland

Abstract

More than 3000 m of Cambro-Ordovician carbonates on C. H. Ostenfeld Nunatak are assigned to the Hyolithus Creek, Dolomite Point, Antiklinalbugt, Cape Weber, Narwhale Sound and Heim Bjerge Formations. The great thickness ofthe Heim Bjerge Formation suggests that the highest beds of the Cambro-Ordovician sequence on the nunatak may be the youngest Lower Palaeozoic rocks known from the East Greenland part ofthe Caledonides. The carbonates are faulted in contact with Precambrian sediments, and unconformably overlain by Devonian conglomerate.