Palaeovalleys at the basal unconformity of the Palaeoproterozoic Karrat Group, West Greenland

Authors

  • Pierpaolo Guarnieri Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen K. Denmark
  • Camille A. Partin Department of Geological Sciences, University of Saskatchewan, 114 Science Place, Saskatoon, SK S7N 5E2, Canada
  • Diogo Rosa Geological Survey of Denmark and Greenland, Øster Voldgade 10, DK-1350 Copenhagen K. Denmark

DOI:

https://doi.org/10.34194/geusb.v35.4940

Abstract

In the Rinkian belt of West Greenland, reworked Archaean gneisses are overlain by supracrustal successions of the Palaeoproterozoic Karrat Group, defined by Henderson & Pulvertaft (1967) as comprising two formations: the Qeqertarssuaq Formation and the Nûkavsak Formation. The group was later extended to include the Mârmorilik Formation (Henderson & Pulvertaft 1987) originally considered to be of Archaean age (Henderson & Pulvertaft 1967) but later shown to be Palaeoproterozoic, resting with a depositional unconformity on Archaean gneiss (Garde 1978). Henderson & Pulvertaft (1987) suggested that the carbonatedominated Mârmorilik Formation in the south was laterally equivalent to the siliciclastic-dominated Qeqertarssuaq Formation in the north, the two subbasins being separated by a basement topographic high.

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Published

2016-07-15

How to Cite

Guarnieri, P., Partin, C. A., & Rosa, D. . (2016). Palaeovalleys at the basal unconformity of the Palaeoproterozoic Karrat Group, West Greenland. GEUS Bulletin, 35, 63–66. https://doi.org/10.34194/geusb.v35.4940

Issue

Section

RESEARCH ARTICLE | SHORT

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