Carboniferous back-arc bimodal rocks in West Kunlun during northward subduction of the Paleo-Tethys
文献类型：期刊论文
| 作者 | Xia, Ying1; Sui, Qinglin2,4 ; He, Yongkang3; Ji, Wenhua3; Chen, Denghui3; Zhao, Xiaojian3; Zhao, Min3; Gao, Xiaofeng3; Wang, Kun2; Zhang, Lipeng2
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| 刊名 | INTERNATIONAL GEOLOGY REVIEW
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| 出版日期 | 2023-07-08 |
| 页码 | 19 |
| ISSN号 | 0020-6814 |
| 关键词 | bimodal suites Zircon U-Pb age back-arc West Kunlun Paleo-Tethys > |
| DOI | 10.1080/00206814.2023.2233016 |
| 通讯作者 | Sui, Qinglin(qlinsui@163.com) |
| 英文摘要 | The widespread occurrence of Carboniferous Wuluate Formation volcanic rocks in the West Kunlun is closely related to the evolution of the Paleo-Tethys but has received little attention. In this study, we conducted detailed fieldwork on the Wuluate Formation in West Kunlun and performed zircon U-Pb dating, whole-rock major and trace element analysis, whole-rock Sr-Nd isotope analysis, and in situ zircon Hf isotope analyses. The Wuluate Formation is characterized by a bimodal volcanic suite. Zircon U-Pb dating indicates that the rhyolites erupted at ca. 348-353 Ma, which is coeval with the zircon U-Pb dating result of 354 Ma for the basalt. The basalts show a tholeiitic magmatic evolution trend with flattened REE patterns and depleted whole-rock Sr-Nd and zircon Hf isotopes, indicating geochemical affinity to back-arc basin basalt (BABB). Trace element modelling results indicate that the primitive basaltic compositions fit well with the products of the DMM + sediments + H2O source under melting conditions of asthenospheric temperature and thin lithosphere thickness, and the REE modelling results show that the basalts underwent 40% to 95% crystallographic differentiation of olivine, monazite, hornblende, plagioclase, and magnetite. The silicic rocks are calcic to calcic-alkaline and meta/peraluminous. They exhibit flattened REE patterns and slightly enriched zircon Hf isotopes, which could originate from Precambrian metaigneous sources of West Kunlun. The Kungai bimodal suite is likely to have formed in a back-arc setting corresponding to the northward subduction of Paleo-Tethys. The subduction of Paleo-Tethys had already occurred, and a back-arc basin had developed before the Early Carboniferous. |
| WOS关键词 | POTASSIC MICROGRANULAR ENCLAVES ; CALC-ALKALINE DIFFERENTIATION ; TRACE-ELEMENT COMPOSITION ; NW CHINA IMPLICATIONS ; OROGENIC BELT ; TECTONIC EVOLUTION ; FRACTIONAL CRYSTALLIZATION ; ACCRETIONARY TECTONICS ; MARIANA ARC ; ORIGIN |
| 资助项目 | National Natural Science Foundation of China[42003028] ; Research Foundation of Education Bureau of Hunan Province, China[22B0433] ; Provincial Key Ramp;D Program of Xinjiang Autonomous Region[2022A03010-2] |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | TAYLOR & FRANCIS INC |
| WOS记录号 | WOS:001020821700001 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/182418]  |
| 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 | Sui, Qinglin |
| 作者单位 | 1.Chengdu Univ Technol, Coll Earth Sci, Chengdu, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Ctr Deep Sea Res, Qingdao, Peoples R China 3.China Geol Survey, Xian Ctr Geol Survey, Ctr Orogen Belt Geol, Xian, Peoples R China 4.Univ South China, Sch Resource Environm & Safety Engn, Hengyang, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xia, Ying,Sui, Qinglin,He, Yongkang,et al. Carboniferous back-arc bimodal rocks in West Kunlun during northward subduction of the Paleo-Tethys[J]. INTERNATIONAL GEOLOGY REVIEW,2023:19. |
| APA | Xia, Ying.,Sui, Qinglin.,He, Yongkang.,Ji, Wenhua.,Chen, Denghui.,...&Chen, Yue.(2023).Carboniferous back-arc bimodal rocks in West Kunlun during northward subduction of the Paleo-Tethys.INTERNATIONAL GEOLOGY REVIEW,19. |
| MLA | Xia, Ying,et al."Carboniferous back-arc bimodal rocks in West Kunlun during northward subduction of the Paleo-Tethys".INTERNATIONAL GEOLOGY REVIEW (2023):19. |
入库方式： OAI收割
来源：海洋研究所
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