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- W2026216805 abstract "Research Article| May 01, 2002 Late Cenozoic paleoenvironment in southern Victoria Land, Antarctica, based on a polar glaciolacustrine deposit in western Victoria Valley Meredith A. Kelly; Meredith A. Kelly 1Institute for Quaternary and Climate Studies, University of Maine, Orono, Maine 04469, USA Search for other works by this author on: GSW Google Scholar George H. Denton; George H. Denton 2Department of Geological Sciences and Institute for Quaternary and Climate Studies, University of Maine, Orono, Maine 04469, USA Search for other works by this author on: GSW Google Scholar Brenda L. Hall Brenda L. Hall 2Department of Geological Sciences and Institute for Quaternary and Climate Studies, University of Maine, Orono, Maine 04469, USA Search for other works by this author on: GSW Google Scholar Author and Article Information Meredith A. Kelly 1Institute for Quaternary and Climate Studies, University of Maine, Orono, Maine 04469, USA George H. Denton 2Department of Geological Sciences and Institute for Quaternary and Climate Studies, University of Maine, Orono, Maine 04469, USA Brenda L. Hall 2Department of Geological Sciences and Institute for Quaternary and Climate Studies, University of Maine, Orono, Maine 04469, USA Publisher: Geological Society of America Received: 11 Dec 2000 Revision Received: 26 Nov 2001 Accepted: 29 Nov 2001 First Online: 01 Jun 2017 Online ISSN: 1943-2674 Print ISSN: 0016-7606 Geological Society of America GSA Bulletin (2002) 114 (5): 605–618. https://doi.org/10.1130/0016-7606(2002)114<0605:LCPISV>2.0.CO;2 Article history Received: 11 Dec 2000 Revision Received: 26 Nov 2001 Accepted: 29 Nov 2001 First Online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation Meredith A. Kelly, George H. Denton, Brenda L. Hall; Late Cenozoic paleoenvironment in southern Victoria Land, Antarctica, based on a polar glaciolacustrine deposit in western Victoria Valley. GSA Bulletin 2002;; 114 (5): 605–618. doi: https://doi.org/10.1130/0016-7606(2002)114<0605:LCPISV>2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract Situated in the Transantarctic Mountains, western Victoria Valley is in a key position to test the late Cenozoic stability of the East Antarctic Ice Sheet, as well as that of the surrounding landscape surface. Victoria drift, which covers most of western Victoria Valley, represents a peculiar yet common type of deposit in the region. The sedimentology of Victoria drift is dominated by loose, sorted material, which preserves lacustrine algae, quite unlike tills in the Dry Valleys. Ridges characterize its morphology. Extraordinarily old ridges and mounds as well as fresh features and unweathered and perched boulders occur without apparent order. Accelerator Mass Spectrometry (AMS) radiocarbon dates of algae from within Victoria drift range from 11;th054 ± 95 to >45;th000 14C yr B.P. and are not arrayed in chronological order across the drift sheet.Resting on a Miocene erosion surface, Victoria drift is the only widespread deposit in western Victoria Valley younger than ca. 14 Ma. One hypothesis is that the drift consists of moraines. The strength of this hypothesis is that it explains the arcuate form of many ridges. However, it does not explain the sedimentology, weathering characteristics, or radiocarbon dates. A second hypothesis is that Victoria drift is a unique polar glaciolacustrine sediment facies deposited by a “lake-ice conveyer.” The morphologic features, sedimentology, weathering characteristics, and radiocarbon dates of the drift are all consistent with deposition in a perennially ice-covered lake. This second hypothesis implies polar glacial conditions during deposition of the drift sheet in order to maintain a permanently ice-covered proglacial lake. You do not have access to this content, please speak to your institutional administrator if you feel you should have access." @default.
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- W2026216805 title "Late Cenozoic paleoenvironment in southern Victoria Land, Antarctica, based on a polar glaciolacustrine deposit in western Victoria Valley" @default.
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