Title: Magmatic and metamorphic events during the early Paleozoic Wuyi-Yunkai orogeny, southeastern South China: New age constraints and pressure-temperature conditions
Abstract: Research Article| May 01, 2010 Magmatic and metamorphic events during the early Paleozoic Wuyi‑Yunkai orogeny, southeastern South China: New age constraints and pressure-temperature conditions Zheng-Xiang Li; Zheng-Xiang Li † 1Institute for Geoscience Research, Department of Applied Geology, Curtin University of Technology, GPO Box U1987, Perth, WA 6845, Australia †E-mail: [email protected] Search for other works by this author on: GSW Google Scholar Xian-Hua Li; Xian-Hua Li 2State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100027, China Search for other works by this author on: GSW Google Scholar Jo-Ann Wartho; Jo-Ann Wartho § 1Institute for Geoscience Research, Department of Applied Geology, Curtin University of Technology, GPO Box U1987, Perth, WA 6845, Australia §Present address: School of Earth and Space Exploration, Arizona State University, P.O. Box 871404, Tempe, Arizona 85287, USA. Search for other works by this author on: GSW Google Scholar Chris Clark; Chris Clark 1Institute for Geoscience Research, Department of Applied Geology, Curtin University of Technology, GPO Box U1987, Perth, WA 6845, Australia Search for other works by this author on: GSW Google Scholar Wu-Xian Li; Wu-Xian Li 3Key Laboratory of Isotope Geochronology and Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China Search for other works by this author on: GSW Google Scholar Chuan-Lin Zhang; Chuan-Lin Zhang 4Nanjing Institute of Geology and Mineral Resources, Nanjing 210016, China Search for other works by this author on: GSW Google Scholar Chaomin Bao Chaomin Bao 4Nanjing Institute of Geology and Mineral Resources, Nanjing 210016, China Search for other works by this author on: GSW Google Scholar GSA Bulletin (2010) 122 (5-6): 772–793. https://doi.org/10.1130/B30021.1 Article history received: 02 Feb 2009 rev-recd: 26 May 2009 accepted: 01 Jun 2009 first online: 08 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 Zheng-Xiang Li, Xian-Hua Li, Jo-Ann Wartho, Chris Clark, Wu-Xian Li, Chuan-Lin Zhang, Chaomin Bao; Magmatic and metamorphic events during the early Paleozoic Wuyi‑Yunkai orogeny, southeastern South China: New age constraints and pressure-temperature conditions. GSA Bulletin 2010;; 122 (5-6): 772–793. doi: https://doi.org/10.1130/B30021.1 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 early Paleozoic Wuyi-Yunkai orogen in South China is a major orogenic belt in East Asia that formed at a similar time as the classic Caledonian orogeny in Europe. Despite the possibility of its being one of the few examples of intraplate orogenesis in the world, details about the orogen remain poorly defined. In this study, we provide age constraints on metamorphic and magmatic events in the eastern segment of the orogen, and the protoliths of the amphibolite-facies metamorphic rocks found there. By combining previous work with our new metamorphic and petrogenetic analyses, we present the following findings: (1) the Wuyi-Yunkai orogeny occurred between mid-Ordovician (>460 Ma) and earliest Devonian (ca. 415 Ma) time; (2) amphibolite-facies metamorphism in the eastern Wuyi-Yunkai orogen occurred between ca. 460 and 445 Ma, whereas cooling below 500–300 °C occurred by ca. 420 Ma; (3) the orogen exhibits a clockwise pressure-temperature (P-T) path and a maximum pressure of >8 kbar, indicating crustal thickening during the orogeny; (4) protoliths of the high-grade metamorphic rocks in the eastern segment of the orogen were dominantly Neoproterozoic (840–720 Ma) volcanic and volcaniclastic rift successions and younger deposits formed in a failed rift, and Paleoproterozoic rocks account for only a small proportion of the outcrops; and (5) the analyzed granites indicate a mixed source of Paleoproterozoic basement and Neoproterozoic continental rift rocks, with elevated melt temperatures of >800 °C, which are interpreted as reflecting dehydration melting of basin sediments taken to below midcrustal levels. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.
Publication Year: 2009
Publication Date: 2009-12-30
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 592
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