The Proterozoic sandstones between Heilprin Land and Mylius-Erichsen Land, eastern Greenland

Abstract

The oldest sediments of eastern North Greenland are a series of sandstones, whose base is not seen and whose top is a surface of unconformity above which are sediments which pass without apparent break into rocks of Cambrian age. These lowest sandstones were initially included by Koch (1929) in his Thule Formation by comparison with sediments lying between crystalline basement and Cambrian sediments in North-West Greenland. They were subsequently designated as 'Thule Group' by Haller (1971), who regarded them as the autochthonous representatives of the pre-Carolinidian sedimentary cycle. The absence of any direct links with the Thule Basin leads to a preference here for the informal term Proterozoic sandstones.