Early Paleozoic tectonism within the East Antarctic craton: The final suture between east and west Gondwana?

Abstract

Research Article| May 01, 2001 Early Paleozoic tectonism within the East Antarctic craton: The final suture between east and west Gondwana? S.D. Boger; S.D. Boger 1School of Earth Sciences, University of Melbourne, Melbourne, Victoria 3010, Australia Search for other works by this author on: GSW Google Scholar C.J.L. Wilson; C.J.L. Wilson 1School of Earth Sciences, University of Melbourne, Melbourne, Victoria 3010, Australia Search for other works by this author on: GSW Google Scholar C.M. Fanning C.M. Fanning 2Research School of Earth Sciences, Australian National University, Canberra, ACT 0200, Australia Search for other works by this author on: GSW Google Scholar Author and Article Information S.D. Boger 1School of Earth Sciences, University of Melbourne, Melbourne, Victoria 3010, Australia C.J.L. Wilson 1School of Earth Sciences, University of Melbourne, Melbourne, Victoria 3010, Australia C.M. Fanning 2Research School of Earth Sciences, Australian National University, Canberra, ACT 0200, Australia Publisher: Geological Society of America Received: 25 Sep 2000 Revision Received: 29 Jan 2001 Accepted: 31 Jan 2001 First Online: 02 Jun 2017 Online ISSN: 1943-2682 Print ISSN: 0091-7613 Geological Society of America Geology (2001) 29 (5): 463–466. https://doi.org/10.1130/0091-7613(2001)029<0463:EPTWTE>2.0.CO;2 Article history Received: 25 Sep 2000 Revision Received: 29 Jan 2001 Accepted: 31 Jan 2001 First Online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn Email Permissions Search Site Citation S.D. Boger, C.J.L. Wilson, C.M. Fanning; Early Paleozoic tectonism within the East Antarctic craton: The final suture between east and west Gondwana?. Geology 2001;; 29 (5): 463–466. doi: https://doi.org/10.1130/0091-7613(2001)029<0463:EPTWTE>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 SocietyGeology Search Advanced Search Abstract New U-Pb SHRIMP ages from East Antarctica point to the existence of a laterally continuous orogenic belt that bisects the East Antarctic craton. This orogenic belt juxtaposes Archean crust to the south and east against Neoproterozoic metamorphic rocks to the north and west. It defines the margin of a separate lithospheric block that consists of a large section of East Antarctica and India that did not form part of east Gondwana or Rodinia as they are currently reconstructed. Instead, this Indo-Antarctic continent accreted with west Gondwana along the Mozambique suture shortly before collision and suturing along a second “Pan-African” suture now cropping out in the southern Prince Charles Mountains and Prydz Bay regions of Antarctica. This scenario is consistent with (1) the abrupt termination of ca. 990–900 Ma tectonism recognized in the northern Prince Charles Mountains–Rayner Complex–Eastern Ghats against Paleozoic orogenic belts, (2) the lack of terranes of equivalent age found elsewhere in either Antarctica or other previously adjacent continents, and (3) the distinct detrital-zircon populations obtained from either side of this proposed suture. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.