Abstract
The Poulsen Cliff Formation of Washington Land, western North Greenland, is a recessive, pale weathering unit, 100-125 m in thickness, of thinly-bedded dolomite, shale and sandstone witll conspicuous evaporites. The formation represents the continuation into Greenland of the lower part (member a) of the Baumann Fiord Formation evaporite sequence of the Canadian Arctic Islands, which outcrops over a distance of about 1000 km from Cornwallis Island to Ellesmere Island (Mossop, 1979; Peel & Christie, 1982; Peel, in press). The Poulsen Cliff Formation was first described by Troelsen (1950). It did not yield fossils to Troelsen but could with certainty be ascribed an Early Ordovician age on account of its stratigraphic position between fossiliferous units (Poulsen, 1927; Peel & Christie, 1982).
Highlights
The Poulsen Cliff Formation of Washington Land, western North Greenland, is a recessive, paie weathering unit, 100-125 m in thickness, of thinly-bedded dolomite, shale and sandstone witll conspicuous evaporites
The most common is a species of Peltabellia Whittington, very like that described by Ross (1951) from the Garden City Formation of Utah
The other is a species of Licnocephala Ross, possibly identical with one described by Cullison (1944) from the Lower Ordovician of Missouri
Summary
The Poulsen Cliff Formation of Washington Land, western North Greenland, is a recessive, paie weathering unit, 100-125 m in thickness, of thinly-bedded dolomite, shale and sandstone witll conspicuous evaporites. In 1976 Peel collected fossils from near the top of the formation at 'Winterhouses' west of Nygaard Bugt, on the south coast of Washington Land.
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