Abstract
Three types of carbonate build-ups occur in the mid-Carboniferous – ?early Permian (Moscovian–?Asselian) succession at Kap Jungersen, southern Amdrup Land, North Greenland: (1) Palaeoaplysina-dominated build-ups; (2) AIgae-dominated build-ups; and (3) Bryozoan-dominated build-ups. The build-ups are less than 15 m thick and up to a few hundred metres wide. They often coalesce to form laterally widespread, build-up dominated units and are locally stacked to form up to 100 m thick build-up dominated sections along platform margins.
Highlights
Three types of carbonate build-ups occur in the mid-Carboniferous - ?early Permian (Moscovian-?Asselian) succession at Kap Jungersen, southem Amdrup Land, North Greenland: (I) Palaeoaplysina-dominated build-ups; (2) AIgae-dominated build-ups; and (3) Bryozoan-dominated build-ups
The mid-Carboniferous to Early Permian Mallemuk Mountain Group in Amdrup Land and Holm Land, eastem North Greenland, is dominated by shallow water carbonates with minor evaporites and silicic1astics (Fig. l; Håkansson et al, 1981; Håkansson & Stemmerik, 1984; Stemmerik & Håkansson, 1989, 1991)
The Upper Palaeozoic sediments in Holm Land and Amdrup Land post-date the Caledonian orogenesis (Håkansson et al, 1981). They were deposited during the initial stages of rifting between Greenland and Norway, and the depositional basin forms part of an extensive mosaiC of interconnected basins covering the Barents Sea region and the marginal parts of North Greenland during the Late PalaeozoiC (Håkansson & Stemmerik, 1989; Stemmerik & Worsley, 1989, in press)
Summary
The Upper Palaeozoic sediments in Holm Land and Amdrup Land post-date the Caledonian orogenesis (Håkansson et al, 1981). The Kap Jungersen section is located on the south Amdrup Land block (Stemmerik & Håkansson, 1989). This block was transgressed during the earliest Moscovian or possibly earlier, and during the late Carboniferous and early Permian more than 1200 m of shallow marine sediments were deposited (Fig. 1). In northem Amdrup Land and 10-15 km to the south in northem Holm Land, the mid-Carboniferous sediments directly overlie Caledonian deformed Precambrian basement (Håkansson et al, 1981).
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