Murton, J.B., Bateman, M.D. orcid.org/0000-0003-1756-6046, Telka, A.M. et al. (3 more authors) (2017) Early to mid Wisconsin Fluvial Deposits and Palaeoenvironment of the Kidluit Formation, Tuktoyaktuk Coastlands, Western Arctic Canada. Permafrost and Periglacial Processes, 28 (3). pp. 523-533. ISSN 1045-6740
Abstract
The Kidluit Formation (Fm) is a fluvial sand deposit that extends regionally across the Tuktoyaktuk Coastlands, western Arctic Canada. It was deposited by a large river flowing north into the Arctic Ocean before development of a cold‐climate sandy desert and later glaciation by the Laurentide Ice Sheet. Lithostratigraphic and sedimentological field observations of the Summer Island area indicate deposition of the Kidluit Fm by a braided river system. Optically stimulated luminescence (OSL) dating of Kidluit sand provides eight OSL ages of 76–27 ka, which indicate deposition during Marine Isotope Stage (MIS) 4 and MIS 3. Radiocarbon dating of well‐preserved weevil remains, a willow twig, wild raspberry seeds and bulrush achenes provides non‐finite 14C ages of >52 200, >51 700, >45 900 and >54 700 14C BP and are assigned an age of either MIS 4 or early MIS 3. Plant macrofossils from the sand deposit indicate spruce forest conditions and climate slightly warmer than present, whereas insect fossils indicate tundra conditions slightly colder than present. The river system that deposited the Kidluit Fm was probably either a pre‐Laurentide Mackenzie River or the palaeo‐Porcupine River, or a combination of the two.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2017 John Wiley & Sons, Ltd. This is an author-produced version of a paper subsequently published in Permafrost and Periglacial Processes. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Kidluit Formation; Early and Middle Wisconsin; optical dating; macrofossils; Summer Island |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Social Sciences (Sheffield) > Department of Geography (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 11 Apr 2018 11:12 |
Last Modified: | 16 Nov 2020 14:03 |
Status: | Published |
Publisher: | Wiley |
Refereed: | Yes |
Identification Number: | 10.1002/ppp.1946 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:129213 |