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U–Pb SIMS zircon geochronology of Triassic and Jurassic sandstones on northwestern Axel Heiberg Island, northern Sverdrup Basin, Arctic Canada

By
J. E. Omma
J. E. Omma
CASP, University of Cambridge, West Building, 181a Huntingdon Road, Cambridge, CB3 0DH, UK
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V. Pease
V. Pease
Department of Geology and Geochemistry, Stockholm University, 10405 Stockholm, Sweden
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R. A. Scott
R. A. Scott
CASP, University of Cambridge, West Building, 181a Huntingdon Road, Cambridge, CB3 0DH, UK
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Published:
January 01, 2011

Abstract

Detrital U–Pb zircon age data from five stratigraphically controlled Mesozoic sandstones collected from a relatively continuous section in northwestern Axel Heiberg Island are used to evaluate the sediment dispersal patterns and source areas of the northern Sverdrup Basin. Three distinctive provenance types are identified. Early Triassic, Late Triassic and Middle Jurassic samples are dominated by Permo-Triassic zircons and are inferred to be derived from the Taimyr Peninsula/Polar Urals, the New Siberian Islands or some unexposed source submerged beneath the Arctic Ocean. The presence of chrome spinel in these samples suggests a component of mafic–ultramafic material in the source. An Early Jurassic sample is dominated by late Neoproterozoic–early Silurian zircons, which correlate with the Caledonian and Timanian orogens of the Barents Shelf region. A Late Jurassic sample is dominated by Meso-, Palaeoproterozoic and Archaean zircons interpreted to be sourced from the Canada–Greenland shield.

Supplementary material:

Heavy mineral data (Table S1) and U–Th–Pb ion microprobe analytical data (Table S2) are available at http://www.geolsoc.org.uk/SUP18475.

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Contents

Geological Society, London, Memoirs

Arctic Petroleum Geology

Anthony M. Spencer
Anthony M. Spencer
Statoil, Norway
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Ashton F. Embry
Ashton F. Embry
Geological Survey of Canada, Canada
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Donald L. Gautier
Donald L. Gautier
United States Geological Survey, USA
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Antonina V. Stoupakova
Antonina V. Stoupakova
Moscow State University, Russia
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Kai Sørensen
Kai Sørensen
Geological Survey of Denmark and Greenland
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Geological Society of London
Volume
35
ISBN electronic:
9781862394100
Publication date:
January 01, 2011

GeoRef

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