Abstract
Reconnaissance work in Kronprins Christian Land1–7 indicated the presence of one main nappe of late Proterozoic sediments2,3 thrust over Lower Palaeozoic platform carbonates similar to Peary Land7,8. Our 2-month helicopter-supported work in 1980 now indicates the presence of three thrust-bounded nappes. The Finderup Land Nappes, which occur in northern Kronprins Christian Land, contain a late Precambrian early Cambrian sequence in thrust contact above Silurian carbonates. The younger Vandredalen Nappe in thrust contact above the Finderup Land Nappes and Silurian carbonates occurs throughout Kronprins Christian Land and contains a thick sequence of late Proterozoic elastics and carbonates. In southern Kronprins Christian Land the Saefaxi Elv Nappe only contains Ordovician-?Silurian carbonates and is in thrust contact below Vandredalen Nappe. The nappes were involved in westward-directed thrusting (≥150 km) and are probably a result of continental collision when the northern part of lapetus Ocean closed in the late Silurian.
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