Thermochronological evidence for the movement of the Ailao Shan–Red River shear zone: A perspective from Vietnam

Research Article| October 01, 1998 Thermochronological evidence for the movement of the Ailao Shan–Red River shear zone: A perspective from Vietnam Pei-Ling Wang; Pei-Ling Wang 1Department of Geology, National Taiwan University, Taipei, Taiwan Search for other works by this author on: GSW Google Scholar Ching-Hua Lo; Ching-Hua Lo 1Department of Geology, National Taiwan University, Taipei, Taiwan Search for other works by this author on: GSW Google Scholar Tung-Yi Lee; Tung-Yi Lee 2Department of Earth Sciences, National Taiwan Normal University, Taipei, Taiwan Search for other works by this author on: GSW Google Scholar Sun-Lin Chung; Sun-Lin Chung 1Department of Geology, National Taiwan University, Taipei, Taiwan Search for other works by this author on: GSW Google Scholar Ching-Ying Lan; Ching-Ying Lan 3Institute of Earth Sciences, Academia Sinica, Taipei, Taiwan Search for other works by this author on: GSW Google Scholar Nguyen Trong Yem Nguyen Trong Yem 4Institute of Geological Sciences, National Center for Natural Sciences and Technology, Hanoi, Vietnam Search for other works by this author on: GSW Google Scholar Geology (1998) 26 (10): 887–890. https://doi.org/10.1130/0091-7613(1998)026<0887:TEFTMO>2.3.CO;2 Article history first online: 02 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Pei-Ling Wang, Ching-Hua Lo, Tung-Yi Lee, Sun-Lin Chung, Ching-Ying Lan, Nguyen Trong Yem; Thermochronological evidence for the movement of the Ailao Shan–Red River shear zone: A perspective from Vietnam. Geology 1998;; 26 (10): 887–890. doi: https://doi.org/10.1130/0091-7613(1998)026<0887:TEFTMO>2.3.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 In order to explore the timing of strike-slip movement along the Ailao Shan–Red River shear zone, an 40Ar/39Ar thermochronological study of the Day Nui Con Voi metamorphic massif in northern Vietnam was undertaken. The massif, exposed in the southeastern segment of the Ailao Shan–Red River shear zone, reveals a rapid cooling in the early Miocene (25–21 Ma) after a very slow cooling ca. 34–25 Ma. The slow cooling period most likely resulted from a geothermal perturbation in the lithosphere owing to the late Paleogene (40–30 Ma) extension in eastern Tibet and western Yunnan, China. The rapid cooling, consistent with evidence of a wider rapid cooling span from 27 to 17 Ma compiled from the entire Ailao Shan–Red River shear zone, constrains the duration of left-lateral shearing, which eventually offset Indochina from South China by about 600 km. The time constraints we have established reinforce the argument that the onset of the Ailao Shan–Red River shear zone postdates the opening of the South China Sea that began ca. 30 Ma. This result highlights the necessity for reevaluating the Cenozoic tectonic models of Southeast Asia. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.