Abstract
The earliest geological reconnaissance work in Kronprins Christian Land concerned with the Caledonian nappes was that of Nielsen (1941). Subsequently, Fränkl (1954, 1955) published maps of selected areas and a greatly simplified map of the central part of Kronprins Christian Land between Marmorvigen, Centrum Sø, and Romer Sø (fig. 4). Haller (1970, 1971) studied Kronprins Christian Land from the air as part of a larger operation in East Greenland. His conclusions concerning the nappes followed the work of Fränkl (1954, 1955). The primary aims of the 1980 field season were to remap the clastic sediments contained on the Caledonian nappes, to establish a detailed stratigraphy on each nappe and to correlate between each nappe and the platform sediments.
Highlights
The primaryaims of the 1980 field season were to remap the c!astic sediments contained on the Caledonian nappes, to establish a detailed stratigraphy on each nappe and to correlate between each nappe and the platform sediments
Frankl (1954, 1955) considered that all the sediments occurring west of the Proterozoic sandstones and east of the Lower Palaeozoic platform carbonate rocks belonged essentiaIly to one huge nappe, which he termed the Main Nappe. an this nappe Frankl (1954, 1955) recognised a stratigraphy which from below is: Stenørkenen phyllites (+ 1000 m); Sydvejdal marbles with chloritic shales (100-400 m); Taagefjeldene greywackes (+ 700 m) with layers of alum shales (c. 150 m); Rivieradal sandstones (1000-2000 m); Ulvebjerg sandstones and tillites (30-35 m); red Campanuladal limestones (150 m) and Fyns Sø dolomites (250 m)
As the Campanuladallimestones and Fyns Sø dolomites were thought to be of late Precambrian age, the thick c!astic succession which they conformably overlie was assumed to be of a similar age
Summary
Frankl (1954, 1955) considered that all the sediments occurring west of the Proterozoic sandstones and east of the Lower Palaeozoic platform carbonate rocks (fig. 4) belonged essentiaIly to one huge nappe, which he termed the Main Nappe. an this nappe Frankl (1954, 1955) recognised a stratigraphy which from below is: Stenørkenen phyllites (+ 1000 m); Sydvejdal marbles with chloritic shales (100-400 m); Taagefjeldene greywackes (+ 700 m) with layers of alum shales (c. 150 m); Rivieradal sandstones (1000-2000 m); Ulvebjerg sandstones and tillites (30-35 m); red Campanuladal limestones (150 m) and Fyns Sø dolomites (250 m). The nappe consists of a thick sequence of turbidites (Rivieradal sandstones of Frankl, 1954, 1955) over!ain by sands, silts, variegated shales, silts with red limestones (in part Campanuladal Formation) and stromatolitic dolomites (Fyns Sø Formation) Two main conglomerate beds occur within the Rivieradal turbidites; they are mass flow deposits possibly derived from similar conglomerates seen in situ above the Proterozoic sandstones at Marmorvigen and Hjørnegletscher It the deformation associated with these imbricate zones is due to the nappes, it is consistent with westerly movement of the nappes in the southern part of Kronprins Christian Land, and with north-westerly movement af the Finderup Land Nappe in the north
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