Tethyan suturing in Southeast Asia: Zircon U-Pb and Hf-O isotopic constraints from Myanmar ophiolites

Abstract

Research Article| April 01, 2016 Tethyan suturing in Southeast Asia: Zircon U-Pb and Hf-O isotopic constraints from Myanmar ophiolites Chuan-Zhou Liu; Chuan-Zhou Liu 1State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China2CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, China Search for other works by this author on: GSW Google Scholar Sun-Lin Chung; Sun-Lin Chung 3Institute of Earth Sciences, Academia Sinica, Nangang, Taipei 11529, Taiwan4Department of Geosciences, National Taiwan University, Taipei 10617, Taiwan Search for other works by this author on: GSW Google Scholar Fu-Yuan Wu; Fu-Yuan Wu 1State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China2CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, China Search for other works by this author on: GSW Google Scholar Chang Zhang; Chang Zhang 1State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China Search for other works by this author on: GSW Google Scholar Yang Xu; Yang Xu 1State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China Search for other works by this author on: GSW Google Scholar Jian-Gang Wang; Jian-Gang Wang 1State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China Search for other works by this author on: GSW Google Scholar Yi Chen; Yi Chen 1State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China2CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, China Search for other works by this author on: GSW Google Scholar Shun Guo Shun Guo 1State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China2CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, China Search for other works by this author on: GSW Google Scholar Author and Article Information Chuan-Zhou Liu 1State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China2CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, China Sun-Lin Chung 3Institute of Earth Sciences, Academia Sinica, Nangang, Taipei 11529, Taiwan4Department of Geosciences, National Taiwan University, Taipei 10617, Taiwan Fu-Yuan Wu 1State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China2CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, China Chang Zhang 1State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China Yang Xu 1State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China Jian-Gang Wang 1State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China Yi Chen 1State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China2CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, China Shun Guo 1State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China2CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing 100101, China Publisher: Geological Society of America Received: 07 Sep 2015 Revision Received: 18 Feb 2016 Accepted: 19 Feb 2016 First Online: 09 Mar 2017 Online Issn: 1943-2682 Print Issn: 0091-7613 © 2016 Geological Society of America Geology (2016) 44 (4): 311–314. https://doi.org/10.1130/G37342.1 Article history Received: 07 Sep 2015 Revision Received: 18 Feb 2016 Accepted: 19 Feb 2016 First Online: 09 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Chuan-Zhou Liu, Sun-Lin Chung, Fu-Yuan Wu, Chang Zhang, Yang Xu, Jian-Gang Wang, Yi Chen, Shun Guo; Tethyan suturing in Southeast Asia: Zircon U-Pb and Hf-O isotopic constraints from Myanmar ophiolites. Geology 2016;; 44 (4): 311–314. doi: https://doi.org/10.1130/G37342.1 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 SocietyGeology Search Advanced Search Abstract Ophiolites that crop out in Southeast Asia represent the relics of the Tethys Ocean, which existed between the continents of Gondwana and Laurasia during much of the Mesozoic. Two ophiolite belts in Myanmar, i.e., the Eastern Belt and the Western Belt, have been conventionally regarded as parts of a single suture connecting with the Yarlung-Tsangpo suture in the Tibetan Plateau and displaced by the dextral Sagaing fault. Here we present for the first time a combined analysis of zircon secondary ion mass spectrometry U-Pb ages and Hf-O isotopes of two Myanmar ophiolites, the Kalaymyo ophiolite from the Western Belt and the Myitkyina ophiolite from the Eastern Belt. Our results show that the Kalaymyo ophiolite has an Early Cretaceous age (ca. 127 Ma), coeval with Neo-Tethyan ophiolites along the Yarlung-Tsangpo suture. In contrast, the Myitkyina ophiolite was formed during the Middle Jurassic (ca. 173 Ma) and thus the Eastern Belt is the southern continuation of the Meso-Tethyan Bangong-Nujiang suture in the Tibetan Plateau. Consequently, we argue that the two Myanmar ophiolite belts belong to two different sutures of the Meso-Tethys and Neo-Tethys, and that the boundary between the Sibumasu and west Burma blocks is a Jurassic suture rather than a transcurrent shear zone. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.