The Zhaheba ophiolite complex in Eastern Junggar (NW China): Long lived supra-subduction zone ocean crust formation and its implications for the tectonic evolution in southern Altaids
文献类型：期刊论文
| 作者 | Luo, Jun1; Xiao, Wenjiao1,2,3; Wakabayashi, John4; Han, Chunming1; Zhang, Ji'en1; Wan, Bo1; Ao, Songjian1; Zhang, Zhiyong1; Tian, Zhonghua1; Song, Dongfang1 |
| 刊名 | GONDWANA RESEARCH
 |
| 出版日期 | 2017-03-01 |
| 卷号 | 43页码:17-40 |
| 关键词 | Supra-subduction Zone Ophiolite Suture East Junggar Southern Altaids |
| ISSN号 | 1342-937X |
| DOI | 10.1016/j.gr.2015.04.004 |
| 文献子类 | Article |
| 英文摘要 | The composite Zhaheba ophiolite complex, exposed in Eastern Junggar in the Southern Altaids, records an unusually long record of oceanic crust andmagmatic arc evolution. The Zhaheba ophiolite complex consists of ultramafic rocks, gabbro, diorite, basalt and chert intruded by diabase dikes and diorite porphyry. These rocks are overlain by a several-km-thick section of tuffaceous rocks, volcaniclastic sedimentary rocks, and intermediate volcanic rocks. The igneous rocks of the ophiolite complex show negative Nb and Ta anomalies and LREE enrichment relative to HREE, suggesting the influence of fluids derived from a subducting oceanic slab. The LA-ICPMS U-Pb age of zircons from gabbro is 495.1 +/- 3.5 Ma. Zircon ages from diorite and basalt are 458.3 +/- 7.2 Ma and 446.6 +/- 6.0 Ma, respectively. The basalt is locally overlain by bedded chert. Diabase dikes and diorite porphyry yield the U-Pb ages of 421.5 +/- 4.1 Ma and 423.7 +/- 6.5 Ma, respectively. The age of stratigraphically lower part of the overlying volcanic-volcaniclastic section is constrained to be about 410Ma, the maximum-depositional age of the tuffaceous sandstone from U-Pb detrital zircon ages. Late rhyolite at the top of the stratigraphic section yielded a U-Pb zircon age of 280.3 +/- 3.7 Ma. The age and stratigraphic relationships for the Zhaheba ophiolite complex and related rocks suggest that the period of similar to 70 Ma of initial supra-subduction magmatism was followed by construction of a mature island arc that spanned an additional 140 Ma. Many other ophiolites in the southern Altaids appear to record similar relationships, and are represented as substrates of oceanic island arcs covered by island arc volcanismin supra-subduction zone. The occurrence of the Zhaheba ophiolite complex with tuffaceous and intermediate to felsic volcanic rocks is different from the rock association of classic Tethyan SSZ ophiolites but similar to some ophiolites in North America. Although the Zhaheba ophiolite belt is flanked by the Dulate arc in the north and Yemaquan arc in the south, it cannot stand a suture between two arcs. It is suggested that Devonian-Carboniferous Dulate arc was built on the late Cambrian-middle Ordovician Zhaheba supra-subduction oceanic crust. The late Carboniferous rocks and early Permian rocks in Dulate arc are interpreted to form in the extensional process within Zhaheba-Dulate arc composite system. (C) 2015 International Association for Gondwana Research. Published by Elsevier B.V. All rights reserved. |
| WOS关键词 | ASIAN OROGENIC BELT ; ULTRAMAFIC-MAFIC COMPLEX ; IZU-BONIN-MARIANA ; NORTHWEST CHINA ; VOLCANIC-ROCKS ; SIERRA-NEVADA ; ISLAND-ARC ; MULTISTAGE EVOLUTION ; ACCRETIONARY OROGEN ; NORTHERN JUNGGAR |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000397874200003 |
| 出版者 | ELSEVIER SCIENCE BV |
| 资助机构 | National Natural Science Foundation of China(41390441 ; National Natural Science Foundation of China(41390441 ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National 305 Projects(2011BAB06B04-1) ; National 305 Projects(2011BAB06B04-1) ; 41230207 ; 41230207 ; 41190075 ; 41190075 ; 41202150) ; 41202150) ; National Natural Science Foundation of China(41390441 ; National Natural Science Foundation of China(41390441 ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National 305 Projects(2011BAB06B04-1) ; National 305 Projects(2011BAB06B04-1) ; 41230207 ; 41230207 ; 41190075 ; 41190075 ; 41202150) ; 41202150) ; National Natural Science Foundation of China(41390441 ; National Natural Science Foundation of China(41390441 ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National 305 Projects(2011BAB06B04-1) ; National 305 Projects(2011BAB06B04-1) ; 41230207 ; 41230207 ; 41190075 ; 41190075 ; 41202150) ; 41202150) ; National Natural Science Foundation of China(41390441 ; National Natural Science Foundation of China(41390441 ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National 305 Projects(2011BAB06B04-1) ; National 305 Projects(2011BAB06B04-1) ; 41230207 ; 41230207 ; 41190075 ; 41190075 ; 41202150) ; 41202150) |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/53006]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Xiao, Wenjiao |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China 3.Chinese Acad Sci, Xinjiang Res Ctr Mineral Resources, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China 4.Calif State Univ, Dept Earth & Environm Sci, Fresno, CA 93740 USA |
| 推荐引用方式 GB/T 7714 | Luo, Jun,Xiao, Wenjiao,Wakabayashi, John,et al. The Zhaheba ophiolite complex in Eastern Junggar (NW China): Long lived supra-subduction zone ocean crust formation and its implications for the tectonic evolution in southern Altaids[J]. GONDWANA RESEARCH,2017,43:17-40. |
| APA | Luo, Jun.,Xiao, Wenjiao.,Wakabayashi, John.,Han, Chunming.,Zhang, Ji'en.,...&Chen, Yichao.(2017).The Zhaheba ophiolite complex in Eastern Junggar (NW China): Long lived supra-subduction zone ocean crust formation and its implications for the tectonic evolution in southern Altaids.GONDWANA RESEARCH,43,17-40. |
| MLA | Luo, Jun,et al."The Zhaheba ophiolite complex in Eastern Junggar (NW China): Long lived supra-subduction zone ocean crust formation and its implications for the tectonic evolution in southern Altaids".GONDWANA RESEARCH 43(2017):17-40. |
入库方式： OAI收割
来源：地质与地球物理研究所
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