Investigation of Lower Palaeozoic rocks in northern East Greenland

Field work in 1977 was carried out primarily to collect rock samples for use in establishing a biozonation based on micro-fossils for the East Greenland Cambro-Ordovician sequence described by Cowie & Adams (1957). The most extensive sampling was done in the two type-sections of Cowie & Adams (1957) in Albert Heim Bjerge and Ella ø (fig. 35) in which macro-fossils are relatively sparse. In addition to this, an investigation was made of the virtuaIly unexplored C. H. Ostenfeld Nunatak in the Wordie Gletscher, from which Cowie & Adams (1957, p. 45) reported the presence of rocks belonging to the Hyolithus Creek Formation and the Cass Fjord Formation.