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Diachronous subduction of the Proto-Tethys Ocean along the northern margin of East Gondwana: Insights from SHRIMP and LA-ICP-MS zircon geochronology in the West Kunlun Orogenic Belt, Northwestern China

文献类型：期刊论文

作者Sui, Qinglin1,2,3,4,5; Chen, Denghui3; Zhao, Xiaojian3; Zha, Xianfeng3; Sun, Jiming3; Zhang, Lipeng1,2,4,5; Gao, Xiaofeng3; Sun, Weidong1,2,4,5
刊名INTERNATIONAL GEOLOGY REVIEW
出版日期2021-03-06
页码24
关键词SHRIMP Zircon U– Pb dating magma mixing initial subduction west Kunlun proto-Tethys Ocean
ISSN号0020-6814
DOI10.1080/00206814.2021.1885505
通讯作者Gao, Xiaofeng(xfgao2000@163.com) ; Sun, Weidong(weidongsun@gig.ac.cn)
英文摘要The geological evolution of the Proto-Tethys Ocean remains vague. The Tianshuihai Terrane (TSHT), a subterrane of the West Kunlun, distributed to the south of the Proto-Tethys Ocean during the Early Palaeozoic, records abundant information on the geological evolution of the Proto-Tethys Ocean. In this study, we reported SHRIMP and LA-ICP-MS zircon U-Pb ages, whole-rock major and trace element composition data, and Sr-Nd-Hf isotopes of a suite of monzogranites and the monzonitic-syenitic enclaves in Zankan and syenogranites in Laobing regions of the TSHT, West Kunlun Orogenic Belt. The syenogranites in the Laobing region yielded SHRIMP zircon U-Pb ages of 550.4 +/- 6.4 Ma to 547.5 +/- 5.3 Ma, which were the earliest age records of subduction-related magmatism in the TSHT during the Late Neoproterozoic-Early Palaeozoic. The host monzogranites in the Zankan area yielded SHRIMP and LA-ICP-MS zircon U-Pb ages of 542.6 +/- 8.4 Ma to 540.5 +/- 2.8 Ma, which is coeval with the monzonitic-syenitic enclaves ages of 533.8 +/- 3.4 Ma to 534.7 +/- 3.0 Ma. We speculated that an active margin developed along the TSHT during the Cambrian and the initial subduction of the Proto-Tethys oceanic slab must have occurred prior to the Early Cambrian (>550 Ma). The TSHT and the Southern Kunlun Terrane were distributed between the northern margin of the East Gondwana continent and the Tarim Block. Additionally, the coexistence of two branches of the Proto-Tethys Ocean represented by the Kangxiwa Fault and Kudi Ophiolite Belt during the Early Palaeozoic. Based on the chronological statistics of micro-continental blocks in the northern margin of the East Gondwana continent, subduction of the Proto-Tethys Ocean could be diachronous, initially originating in the northwestern part of the East Gondwana continent, and gradually propagating to the east of the East Gondwana continent.
资助项目Strategic Priority Research Program of the Natural Science Foundation[42003028] ; Taishan Scholar Program of Shandong[ts201712075] ; AoShan Talents Cultivation Program - Qingdao National Laboratory for Marine Science and Technology[2017ASTCP-OS07] ; China Geological Survey Project[DD20190065] ; Natural Science Foundation[41503046] ; Natural Science Foundation of Shaanxi Province[2019JQ-935]
WOS研究方向Geology
语种英语
WOS记录号WOS:000627142600001
出版者TAYLOR & FRANCIS INC
源URL[http://ir.qdio.ac.cn/handle/337002/170129]  
专题海洋研究所_深海极端环境与生命过程研究中心
通讯作者Gao, Xiaofeng; Sun, Weidong
作者单位1.Chinese Acad Sci, Ctr Deep Sea Res, Inst Oceanol, Qingdao, Peoples R China
2.Pilot Qingdao Natl Lab Marine Sci & Technol Qingd, Lab Marine Mineral Resources, Qingdao, Peoples R China
3.China Geol Survey, Ctr Orogen Belt Geol, Xian Ctr Geol Survey, Xian, Peoples R China
4.Univ Chinese Acad Sci, Beijing, Peoples R China
5.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China
推荐引用方式
GB/T 7714		 Sui, Qinglin,Chen, Denghui,Zhao, Xiaojian,et al. Diachronous subduction of the Proto-Tethys Ocean along the northern margin of East Gondwana: Insights from SHRIMP and LA-ICP-MS zircon geochronology in the West Kunlun Orogenic Belt, Northwestern China[J]. INTERNATIONAL GEOLOGY REVIEW,2021:24.
APA Sui, Qinglin.,Chen, Denghui.,Zhao, Xiaojian.,Zha, Xianfeng.,Sun, Jiming.,...&Sun, Weidong.(2021).Diachronous subduction of the Proto-Tethys Ocean along the northern margin of East Gondwana: Insights from SHRIMP and LA-ICP-MS zircon geochronology in the West Kunlun Orogenic Belt, Northwestern China.INTERNATIONAL GEOLOGY REVIEW,24.
MLA Sui, Qinglin,et al."Diachronous subduction of the Proto-Tethys Ocean along the northern margin of East Gondwana: Insights from SHRIMP and LA-ICP-MS zircon geochronology in the West Kunlun Orogenic Belt, Northwestern China".INTERNATIONAL GEOLOGY REVIEW (2021):24.

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来源：海洋研究所

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