Abstract
Field work in 1984 shows that Nansen Land consists of clastic rocks of the carbonaceous Paradisfjeld Group and terrigeneous rocks of the Polkorridoren Group; both are lower Cambrian in age and deposited in a slope and fan environment. Two major Ellesmerian (Devonian to Carboniferous) phases of deformation gave rise to east-west trending folds and schistosities. Three phases of Eurekan (upper Cretaceous to Tertiary) deformation, associated with dyke intrusion, are recognised. The second of these may be related to transpression on the Harder Fjord fault zone, though no major strike-slip movement seems to have taken place.
Highlights
Field work in 1984 shows that Nansen Land consists of clastic rocks of the carbonaceous Paradisfjeld Group and terrigeneous rocks of the Polkorridoren Group; both are lower Cambrian in age and deposited in a slope and fan environment
Thick sequences of resedimented carbonates and terrigeneous clastics were deposited in a roughly east-west trending trough (Surlyk & Hurst, 1984), which was the eastward extension of the lower Palaeozoic Hazen trough of Arctic Canada (Trettin & Balkwill, 1979)
The North Greenland fold belt subsequently developed on the site of the trough
Summary
Field work in 1984 shows that Nansen Land consists of clastic rocks of the carbonaceous Paradisfjeld Group and terrigeneous rocks of the Polkorridoren Group; both are lower Cambrian in age and deposited in a slope and fan environment. The sediments of the North Greenland trough were subdivided into six groups by Friderichsen et al (1982), but only two of these, the Paradisfjeld Group and the Polkorridoren Group, have been found in eastern Nansen Land. Jensen Land (Higgins et al, 1981), the Paradisfjeld Group may be subdivided into a lower unit of mainly dark weathering carbonates and an upper unit of mainly light weathering carbonates. Ruhbly limestone and orange-weathering, thin·bcdded, turbiditic carbonate are the two dominating lithologies af thc lower Paradisfjeld Group. ~ lighl weathering m~ lurbiditic carbonllles _ Dark rubbly limestones with resedimented piso- - lites & lurbidiiie c81bonales
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