The blueschist-bearing Qiangtang metamorphic belt (northern Tibet, China) as an in situ suture zone: Evidence from geochemical comparison with the Jinsa suture

Abstract

Research Article| June 01, 2006 The blueschist-bearing Qiangtang metamorphic belt (northern Tibet, China) as an in situ suture zone: Evidence from geochemical comparison with the Jinsa suture Kai-Jun Zhang; Kai-Jun Zhang 1Guangzhou Institute of Geochemistry, Key Laboratory of Geology of Marginal Sea, Chinese Academy of Sciences, Wushan, Guangzhou 510640, China, and Department of Earth Sciences, Nanjing University, Nanjing 210093, China Search for other works by this author on: GSW Google Scholar Yu-Xiu Zhang; Yu-Xiu Zhang 2 Guangzhou Institute of Geochemistry, Key Laboratory of Geology of Marginal Sea, Chinese Academy of Sciences, Wushan, Guangzhou 510640, China, and Graduate School, Chinese Academy of Science, Beijing 100008, China Search for other works by this author on: GSW Google Scholar Bing Li; Bing Li 2 Guangzhou Institute of Geochemistry, Key Laboratory of Geology of Marginal Sea, Chinese Academy of Sciences, Wushan, Guangzhou 510640, China, and Graduate School, Chinese Academy of Science, Beijing 100008, China Search for other works by this author on: GSW Google Scholar Ying-Tang Zhu; Ying-Tang Zhu 3College of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China Search for other works by this author on: GSW Google Scholar Rong-Zhu Wei Rong-Zhu Wei 4Shanxi Geological Survey, Yuci 030600, Shanxi, China Search for other works by this author on: GSW Google Scholar Geology (2006) 34 (6): 493–496. https://doi.org/10.1130/G22404.1 Article history received: 06 Nov 2005 rev-recd: 23 Jan 2006 accepted: 03 Feb 2006 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 Kai-Jun Zhang, Yu-Xiu Zhang, Bing Li, Ying-Tang Zhu, Rong-Zhu Wei; The blueschist-bearing Qiangtang metamorphic belt (northern Tibet, China) as an in situ suture zone: Evidence from geochemical comparison with the Jinsa suture. Geology 2006;; 34 (6): 493–496. doi: https://doi.org/10.1130/G22404.1 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 Metasiliciclastic rocks and metabasalts from the blueschist-bearing Qiangtang metamorphic belt and the Jinsa suture zone were analyzed for major and trace elements in an attempt to evaluate the affinities of these two tectonic entities. Tholeiitic mid-oceanic-ridge basalts (MORBs) from the Jinsa suture can be distinguished from metabasalts of Qiangtang, which have alkalic compositions and exhibit a range of characteristics typical of many within-plate oceanic islands. The Qiangtang metasiliciclastic rocks were derived from a passive continental margin source, whereas those from the Jinsa suture zone were sourced from a continental island arc or an active continental margin source. The geochemical distinction of metasiliciclastic rocks and metabasalts of the Qiangtang metamorphic belt from their counterparts within the Jinsa suture indicates that there is no affinity between these two tectonic entities and that the Qiangtang metamorphic belt could not have been underthrust from the Jinsa suture. It most likely represents an exhumed accretionary complex composed of sediments derived from a passive continental margin and fragments of seamount sequences, and marks an in situ suture zone that separates northern and southern Qiangtang terranes. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.