中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 岩石圈演化国家重点实验室
The Cambrian initiation of intra-oceanic subduction in the southern Paleo-Asian Ocean: Further evidence from the Barleik subduction-related metamorphic complex in the West Junggar region, NW China

文献类型：期刊论文

作者Liu, Bo1; Han, Bao-Fu1; Xu, Zhao1; Ren, Rong1,2; Zhang, Jin-Rui1; Zhou, Jing1; Su, Li3; Li, Qiu-Li4
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2016-06-01
卷号123页码:1-21
关键词Intra-oceanic Subduction Subduction Initiation Cambrian Blueschist West Junggar Paleo-asian Ocean
DOI10.1016/j.jseaes.2016.03.015
文献子类Article
英文摘要In this study, we present new evidence from the Barleik subduction-related metamorphic complex in the southern West Junggar region, northwestern China, for the Cambrian initiation of intra-oceanic subduction in the southern Paleo-Asian Ocean. The Barleik metamorphic complex is mainly composed of blueschist and amphibolite blocks within an ophiolitic melange and their protoliths are calc-alkaline andesite and alkali and tholeiitic basalts. The calc-alkaline andesite has a zircon U-Pb age of 502 +/- 2 Ma, obtained from magmatic cores of zircon grains, and shares geochemical features similar to the 515-485 Ma intra-oceanic arc magmatic rocks in the West Junggar region. By contrast, the alkali and tholeiitic basalts have trace element features similar to ocean island and enriched mid-ocean ridge basalts, respectively. Rutile and sodic-calcic amphibole from the amphibolite have a U-Pb age of 502 +/- 25 Ma and a Ar-40/Ar-39 age of, similar to 504 Ma, respectively, which are in good agreement within errors with a Ar-40/Ar-39 age of 492 +/- 4 Ma for phengite from the blueschist. These metamorphic ages of similar to 500 Ma are interpreted to represent the timing of Pacific-type subduction-related metamorphism and are also compatible with ages of the oldest supra-subduction zone ophiolites (531-512 Ma) and intra-oceanic arc plutons (515-485 Ma) in the southern West Junggar region. Being one of the oldest subduction-related metamorphic complexes (509-490 Ma) in the southern Central Asian Orogenic Belt, the Barleik metamorphic complex, together with the oldest arc plutons, definitely indicate the initial intra-oceanic subduction in the southern Paleo-Asian Ocean at least in the Early Cambrian. (C) 2016 Elsevier Ltd. All rights reserved.
WOS关键词PHANEROZOIC CRUSTAL GROWTH ; KYRGYZ TIEN-SHAN ; U-PB ; TECTONIC EVOLUTION ; CONTINENTAL-CRUST ; GEODYNAMIC IMPLICATIONS ; NORTH XINJIANG ; MAKBAL COMPLEX ; OROGENIC BELT ; GORNY-ALTAI
WOS研究方向Geology
语种英语
WOS记录号WOS:000378462600001
资助机构National Natural Science Foundation of China(41072168 ; National Natural Science Foundation of China(41072168 ; 41472205 ; 41472205 ; 41222023) ; 41222023) ; National Natural Science Foundation of China(41072168 ; National Natural Science Foundation of China(41072168 ; 41472205 ; 41472205 ; 41222023) ; 41222023)
源URL[http://ir.iggcas.ac.cn/handle/132A11/53403]  
专题地质与地球物理研究所_岩石圈演化国家重点实验室
作者单位1.Peking Univ, Sch Earth & Space Sci, Key Lab Orogen Belts & Crustal Evolut, Minist Educ, Beijing 100871, Peoples R China
2.Res Inst Petr Explorat & Dev, Beijing 100083, Peoples R China
3.China Univ Geosci, Geol Lab Ctr, Beijing 100083, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Bo,Han, Bao-Fu,Xu, Zhao,et al. The Cambrian initiation of intra-oceanic subduction in the southern Paleo-Asian Ocean: Further evidence from the Barleik subduction-related metamorphic complex in the West Junggar region, NW China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2016,123:1-21.
APA Liu, Bo.,Han, Bao-Fu.,Xu, Zhao.,Ren, Rong.,Zhang, Jin-Rui.,...&Li, Qiu-Li.(2016).The Cambrian initiation of intra-oceanic subduction in the southern Paleo-Asian Ocean: Further evidence from the Barleik subduction-related metamorphic complex in the West Junggar region, NW China.JOURNAL OF ASIAN EARTH SCIENCES,123,1-21.
MLA Liu, Bo,et al."The Cambrian initiation of intra-oceanic subduction in the southern Paleo-Asian Ocean: Further evidence from the Barleik subduction-related metamorphic complex in the West Junggar region, NW China".JOURNAL OF ASIAN EARTH SCIENCES 123(2016):1-21.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。