Title: Permian-Triassic boundary in the central Transantarctic Mountains, Antarctica
Abstract: Research Article| May 01, 2006 Permian-Triassic boundary in the central Transantarctic Mountains, Antarctica James W. Collinson; James W. Collinson 1Department of Geological Sciences and Byrd Polar Research Center, The Ohio State University, Columbus, Ohio 43210, USA Search for other works by this author on: GSW Google Scholar William R. Hammer; William R. Hammer 2Geology Department, Augustana College, Rock Island, Illinois 61201, USA Search for other works by this author on: GSW Google Scholar Rosemary A. Askin; Rosemary A. Askin 3Byrd Polar Research Center, The Ohio State University, Columbus, Ohio 43210, USA Search for other works by this author on: GSW Google Scholar David H. Elliot David H. Elliot 4Department of Geological Sciences and Byrd Polar Research Center, The Ohio State University, Columbus, Ohio 43210, USA Search for other works by this author on: GSW Google Scholar GSA Bulletin (2006) 118 (5-6): 747–763. https://doi.org/10.1130/B25739.1 Article history received: 04 Oct 2004 rev-recd: 30 Nov 2005 accepted: 07 Dec 2005 first online: 08 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation James W. Collinson, William R. Hammer, Rosemary A. Askin, David H. Elliot; Permian-Triassic boundary in the central Transantarctic Mountains, Antarctica. GSA Bulletin 2006;; 118 (5-6): 747–763. doi: https://doi.org/10.1130/B25739.1 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 The Permian-Triassic boundary occurs within a relatively complete terrestrial sequence in the Shackleton Glacier area of the central Transantarctic Mountains. The boundary is within a 7- to 10-m-thick interval between the Permian Glossopteris flora and the Lower Triassic Lystrosaurus fauna. This interval, representing on the order of 200 k.y., records some of the events that occurred in the transition from the Permian to Triassic. In the best-documented section at Graphite Peak in the Beardmore Glacier region, Protohaploxypinus microcorpus zone palynomorphs, which we assign to the latest Permian, record the declining Glossopteris flora and occur near the top of the Buckley coal measures, just below a previously reported major negative δ13C excursion. In the Shackleton Glacier area, the Permian Glossopteris flora, including fossil wood, roots, and leaves, occurs within the lower part of the Fremouw Formation. The Antarctic Lystrosaurus assemblage of Early Triassic age has several species in common with the South African fauna that lived 20° to 35° closer to the equator. The migration of vertebrates from southern Africa into Antarctica in the Early Triassic supports hypotheses of runaway greenhouse warming possibly related to CO2 emissions from Siberian flood basalts and large methane gas releases. Changes in flora bracketing the first of the major negative δ13C anomalies near the boundary in Antarctica and in East Greenland support the hypothesis that a global event, perhaps through mutations caused by enhanced ultraviolet radiation, may have played a role in the destruction of floras. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Publication Year: 2006
Publication Date: 2006-04-27
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 94
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