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U-Pb SIMS zircon geochronology of Mesozoic sandstones on northwestern Axel Heiberg Island, Nunavut
Stockholm University, Faculty of Science, Department of Geology and Geochemistry. (Geology)
2011 (English)In: Geological Society of America. Memoirs, ISSN 0072-1069, Vol. 35, 559-566 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2011. Vol. 35, 559-566 p.
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Other Earth and Related Environmental Sciences
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URN: urn:nbn:se:su:diva-33806DOI: 10.1144/M35.37OAI: diva2:283637
Available from: 2009-12-29 Created: 2009-12-29 Last updated: 2013-07-01Bibliographically approved

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Pease, Victoria
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