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Book Chapter

Provenance of the Devonian Clastic Wedge of Arctic Canada: Evidence Provided by Detrital Zircon Ages

By
Vicki J. McNicoll
Vicki J. McNicoll
Geological Survey of Canada, 601 Booth St., Ottawa, Ontario, KIA 0E8, Canada
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J. Chris Harrison
J. Chris Harrison
Geological Survey of Canada, 3303–33rd St. NW. Calgary, Alberta, T2L 2A7, Canada
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Hans P. Trettin
Hans P. Trettin
Geological Survey of Canada, 3303–33rd St. NW. Calgary, Alberta, T2L 2A7, Canada
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Ray Thorsteinsson
Ray Thorsteinsson
Geological Survey of Canada, 3303–33rd St. NW. Calgary, Alberta, T2L 2A7, Canada
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Published:
January 01, 1995

Abstract:

U-Pb geochronology data are presented for single detrital zircon grains from Eifelian, Givetian, and Frasnian sandstones of the Bird Fiord Formation of the central Arctic Islands, Hecla Bay, and Fram Formations of south central Ellesmere Island and the Okse Bay Formation of northern Ellesmere Island. The ranges of 207Pb/206Pb crystallization ages of the detrital zircons extracted from these sandstones are as follows: eight zircons between 2.62 and 3.0 Ga, four grains between 2.25 and 2.47 Ga, eleven zircons between 1.57 and 2.02 Ga, seven zircons between 1.04 and 1.20 Ga, and one grain of 0.43 Ga.

Potential source terrains include the Precambrian shield areas of Canada and Greenland and the mid-Paleozoic Caledonian-Franklinian orogen of Scandinavia, East and North Greenland, and the Canadian Arctic Islands. The East Greenland Caledonian orogen and its unroofed foreland molasse basin are the most probable primary source for the dated detrital zircons of the Devonian clastic wedge. The geology and geographic location of this region also satisfy other aspects of provenance including paleocurrent measurements, mineralogical and petrographic considerations, and the timing and magnitude of provenance area uplift.

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Contents

SEPM Special Publication

Stratigraphic Evolution of Foreland Basins

Steven L. Dorobek
Steven L. Dorobek
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Gerald M. Ross
Gerald M. Ross
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SEPM Society for Sedimentary Geology
Volume
52
ISBN electronic:
9781565761766
Publication date:
January 01, 1995

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