A Neoproterozoic low-delta O-18 magmatic ring around South China: Implications for configuration and breakup of Rodinia supercontinent
文献类型：期刊论文
| 作者 | Zou, Hao1,4; Li, Qiu-Li4; Bagas, Leon1,3; Wang, Xuan-Ce2; Chen, An-Qing1; Li, Xian-Hua4 |
| 刊名 | EARTH AND PLANETARY SCIENCE LETTERS
 |
| 出版日期 | 2021-12-01 |
| 卷号 | 575页码:9 |
| 关键词 | low-delta O-18 magmatic ring Rodinia supercontinent South China Yangtze Block |
| ISSN号 | 0012-821X |
| DOI | 10.1016/j.epsl.2021.117196 |
| 英文摘要 | We report Neoproterozoic (ca. 785-780 Ma) granites from the western margin of the Yangtze Block that are characterised by magmatic zircons with delta O-18 values as low as 2.98 parts per thousand. The lack of low-delta O-18 magmatic zircons in the ca. 820-805 Ma rhyolite samples from the Neoproterozoic Suxiong Formation indicates that there is no recycling of pre-existing hydrothermally altered crust in the study area prior to the emplacement of the ca. 785-780 Ma granites. Thus the ca. 785-780 Ma granites with low-delta O-18 values from the western margin of the Yangtze Block can be linked to assimilation of syn-magmatically altered rocks (rather than the assimilation of a pre-existing hydrothermally altered crust). The granites have a source constrained by their depleted Hf isotopes and low-delta O-18 values resulting from high temperature hydrothermal alteration. The delta O-18 values of the zircons from core to rim exhibit a decrease indicative of the remelting of material during the interaction between magma and water at high temperatures. In combination with the widespread low-delta O-18 signatures that occur in the northern and southern margins of the Yangtze Block and Cathaysia Block, the locations of low-delta O-18 magmatic zircons exhibit a Neoproterozoic low-delta O-18 magmatic ring around South China. This continent-scale Neoproterozoic extensional and magmatic event cannot be attributed to subduction processes in South China resulting in the emplacement of a magmatic ring of felsic igneous rocks with low-delta O-18 values. We therefore propose a model involving a Neoproterozoic super-mantle plume with a diameter of approximately 1500 km controlling the development of the rift systems around South China. (C) 2021 Elsevier B.V. All rights reserved. |
| WOS关键词 | BIMODAL VOLCANIC-ROCKS ; U-PB AGE ; HF ISOTOPES ; O ISOTOPES ; CALDERA COMPLEXES ; WORKING REFERENCE ; WESTERN MARGIN ; BLOCK EVIDENCE ; YANGTZE BLOCK ; ZIRCON HF |
| 资助项目 | Strategic Priority Research Program (B) of the Chinese Academy of Sciences[XDB18030300] ; China Postdoctoral Science Foundation[2019M650833] ; State Key Laboratory of Lithospheric Evolution[SKL-K201902] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000701642300009 |
| 出版者 | ELSEVIER |
| 资助机构 | Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; Strategic Priority Research Program (B) of the Chinese Academy of Sciences ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; China Postdoctoral Science Foundation ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution ; State Key Laboratory of Lithospheric Evolution |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/102696]  |
| 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 | Li, Xian-Hua |
| 作者单位 | 1.Chengdu Univ Technol, State Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu 610059, Sichuan, Peoples R China 2.Yunnan Univ, Sch Earth Sci, Kunming 650500, Yunnan, Peoples R China 3.Xian Ctr China Geol Survey, 438 Youyi Rd, Xian 710054, 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 | Zou, Hao,Li, Qiu-Li,Bagas, Leon,et al. A Neoproterozoic low-delta O-18 magmatic ring around South China: Implications for configuration and breakup of Rodinia supercontinent[J]. EARTH AND PLANETARY SCIENCE LETTERS,2021,575:9. |
| APA | Zou, Hao,Li, Qiu-Li,Bagas, Leon,Wang, Xuan-Ce,Chen, An-Qing,&Li, Xian-Hua.(2021).A Neoproterozoic low-delta O-18 magmatic ring around South China: Implications for configuration and breakup of Rodinia supercontinent.EARTH AND PLANETARY SCIENCE LETTERS,575,9. |
| MLA | Zou, Hao,et al."A Neoproterozoic low-delta O-18 magmatic ring around South China: Implications for configuration and breakup of Rodinia supercontinent".EARTH AND PLANETARY SCIENCE LETTERS 575(2021):9. |
入库方式： OAI收割
来源：地质与地球物理研究所
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