Abstract
A prominent cliff-forming white sandstone occurs within the thick sequence of Cambro-Ordovician carbonate sediments in western North Greenland. The unit has been traced from Nares Land to Warming Land, attaining a maximum thickness of 53 m, and is here named the Permin Land Formation. A thinner sandstone (maximum thickness 15 m) occurs within the upper part of the Cass Fjord Formation of Daugaard-Jensen Land and is named the Kap Coppinger Member of that formation. These units are considered to be coeval and of early Ibexian (earliest Ordovician) age.
Highlights
A prominentcliff-forming white sandstone occurs within the thick sequence of Cambro-Ordovician carbonate sediments in western North Greenland
Thin sandstones and sandy carbonates have, been reported from the Cambrian and Ordovician strata of Daugaard-Jensen Land (Henriksen & Peel, 1976), Warming Land and Wulff Land. In the latter two areas a prominent, 40 m thick sandstone was informally termed the 'white marker sandstone' by Peel (1980) who thought that, to the west, it might be correlated with one of several similar sandstones in the Cass Fjord, Christian Elv and Poulsen Cliff Formations. It was further suggested by Peel (1980) that the sandstone might be a correlative of white sandstones which occur in the upper part of formation T3 (Ineson & Peel, 1980) of the Tavsens Iskappe Group
In Nares Land, Wulff Land and Warming Land, where it occurs as a prominent cliff-forming unit up to 53 m thick, we propose to name this sandstone the Permin Land Formation after its occurrence on Permin Land
Summary
A prominentcliff-forming white sandstone occurs within the thick sequence of Cambro-Ordovician carbonate sediments in western North Greenland. Thin sandstones and sandy carbonates have, been reported from the Cambrian and Ordovician strata of Daugaard-Jensen Land (Henriksen & Peel, 1976), Warming Land and Wulff Land In the latter two areas a prominent, 40 m thick sandstone was informally termed the 'white marker sandstone' by Peel (1980) who thought that, to the west, it might be correlated with one of several similar sandstones in the Cass Fjord, Christian Elv and Poulsen Cliff Formations. There is no outcrop of the unit between Steensby Gletscher and Petermann Gletscher, but in Daugaard-Jensen Land a thinner white sandstone is present within the Cass Fjord Formation of Poulsen (1927)
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