Magma evolution of the South China Sea basin from continental-margin rifting to oceanic crustal spreading: Constraints from In-situ trace elements and Sr isotope of minerals
文献类型：期刊论文
| 作者 | Chen, Shuang-Shuang1,2; Chen, Jing1,2; Guo, Zhengfu3,4; Wu, Tao5; Liu, Jiaqi3; Gao, Rui1,2 |
| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2022-02-05 |
| 卷号 | 589页码:33 |
| 关键词 | Volcanic rocks Olivine Clinopyroxene Zoning texture South China Sea |
| ISSN号 | 0009-2541 |
| DOI | 10.1016/j.chemgeo.2021.120680 |
| 英文摘要 | The South China Sea (SCS) has undergone a complete Wilson cycle. We studied the volcanic rocks from IODP Sites U1502, U1500, U1431, U1433, and U1434 that record the exact mantle dynamics of the SCS basin from continental rifting to oceanic crustal spreading. We present in-situ major and trace element data for minerals (olivine, clinopyroxene, and plagioclase) and melt inclusions; and in-situ Sr isotopic ratios for plagioclases from the volcanic samples. All SCS volcanic rocks belong to the tholeiite series. Most Site U1431 basalts are slightly depleted in light rare earth elements (LREEs) and large-ion lithophile elements (LILEs) and similar to that of normal mid-oceanic ridge basalts (N-MORB). All clinopyroxenes and olivines, and the calculated equilibrium melts of clinopyroxene cores display depletion of LREEs and enrichment of heavy rare earth elements (HREEs) similar to N-MORB-type primary magma. Thus, these volcanic rocks are likely formed by the extension decompression partial melting of shallow depleted magma. The Sites U1502, U1500, U1433, and U1434 bulkrocks and melt inclusions show flat LREE and HREE patterns similar to that of enriched MORB (E-MORB), likely attributed to the partial melting of a depleted mantle source with different degrees of lower continental crustal contamination. The increase in Sr-87/Sr-86 ratios from core to rim in Site U1500 plagioclases further prove the crustal contamination during magmatism. Site U1431 clinopyroxene and Site U1500 plagioclase show normal zoning textures and slight enrichment of incompatible elements in their rims but depletion in their cores, likely indicating significant crystallization of late-stage differentiated melts. Although some clinopymxene and plagioclase were likely crystallized in a relatively closed environment, the existence of melt inclusions and the large Sr isotopic variations between the plagioclase rim and groundmass suggest a dynamic and open magmatic system that likely experienced melt-rock interactions and magma mixing processes. Melt supply rate changes from low to high during the SCS evolution process from initial rifting (Site U1500) to later spreading (Sites U1431 and U1433) indicating that: (1) the number of high-An plagioclase-hosted melt inclusions has gradually decreased; and (2) the zoning textures of clinopyroxene and plagioclase have gradually changed from simple to complex. The influence of mantle plumes and the upwelling of fertile subduction-related asthenospheric magma were negligible during the continental-margin breakup and initial SCS spreading, but played an important role during the late SCS spreading period, as revealed by the variation in Sr isotopic compositions of high-An plagioclase cores, the different mantle potential temperatures and source lithologies. |
| WOS关键词 | CA-RICH PLAGIOCLASE ; RARE-EARTH-ELEMENT ; MID-ATLANTIC RIDGE ; MAGNETIC-ANOMALIES ; MELT INCLUSIONS ; CENOZOIC BASALTS ; NORTHERN MARGIN ; VOLCANIC-ROCKS ; IGNEOUS ROCKS ; SOURCE REGION |
| 资助项目 | program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai)[311021003] ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Zhujiang Talent Project Foundation of Guangdong Province[2017ZT07Z066] ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University[2021qntd23] ; Major Projects of the National Natural Science Foundation of China[41590863] ; National Natural Science Foundation of China[42102333] ; National Natural Science Foundation of China[41806077] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000731966100005 |
| 出版者 | ELSEVIER |
| 资助机构 | program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Zhujiang Talent Project Foundation of Guangdong Province ; Zhujiang Talent Project Foundation of Guangdong Province ; Zhujiang Talent Project Foundation of Guangdong Province ; Zhujiang Talent Project Foundation of Guangdong Province ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; Major Projects of the National Natural Science Foundation of China ; Major Projects of the National Natural Science Foundation of China ; Major Projects of the National Natural Science Foundation of China ; Major Projects of the National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Zhujiang Talent Project Foundation of Guangdong Province ; Zhujiang Talent Project Foundation of Guangdong Province ; Zhujiang Talent Project Foundation of Guangdong Province ; Zhujiang Talent Project Foundation of Guangdong Province ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; Major Projects of the National Natural Science Foundation of China ; Major Projects of the National Natural Science Foundation of China ; Major Projects of the National Natural Science Foundation of China ; Major Projects of the National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Zhujiang Talent Project Foundation of Guangdong Province ; Zhujiang Talent Project Foundation of Guangdong Province ; Zhujiang Talent Project Foundation of Guangdong Province ; Zhujiang Talent Project Foundation of Guangdong Province ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; Major Projects of the National Natural Science Foundation of China ; Major Projects of the National Natural Science Foundation of China ; Major Projects of the National Natural Science Foundation of China ; Major Projects of the National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; program for Innovation Group Project of Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai) ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Guangdong Introducing Innovative and Enterpreneurial Teams ; Zhujiang Talent Project Foundation of Guangdong Province ; Zhujiang Talent Project Foundation of Guangdong Province ; Zhujiang Talent Project Foundation of Guangdong Province ; Zhujiang Talent Project Foundation of Guangdong Province ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; Fundamental Research Funds for the Central Universities, Sun Yat-sen University ; Major Projects of the National Natural Science Foundation of China ; Major Projects of the National Natural Science Foundation of China ; Major Projects of the National Natural Science Foundation of China ; Major Projects of the National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/103924]  |
| 专题 | 地质与地球物理研究所_中国科学院新生代地质与环境重点实验室 |
| 通讯作者 | Guo, Zhengfu; Gao, Rui |
| 作者单位 | 1.Sun Yat Sen Univ, Sch Earth Sci & Engn, Guangzhou 510275, Peoples R China 2.Southern Marine Sci & Engn Guangdong Lab Zhuhai, Zhuhai 519080, Peoples R China 3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China 4.CAS Ctr Excellence Life & Paleoenvironm, Beijing, Peoples R China 5.Zhejiang Univ, Ocean Coll, 1 Zheda Rd, Zhoushan 316021, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Shuang-Shuang,Chen, Jing,Guo, Zhengfu,et al. Magma evolution of the South China Sea basin from continental-margin rifting to oceanic crustal spreading: Constraints from In-situ trace elements and Sr isotope of minerals[J]. CHEMICAL GEOLOGY,2022,589:33. |
| APA | Chen, Shuang-Shuang,Chen, Jing,Guo, Zhengfu,Wu, Tao,Liu, Jiaqi,&Gao, Rui.(2022).Magma evolution of the South China Sea basin from continental-margin rifting to oceanic crustal spreading: Constraints from In-situ trace elements and Sr isotope of minerals.CHEMICAL GEOLOGY,589,33. |
| MLA | Chen, Shuang-Shuang,et al."Magma evolution of the South China Sea basin from continental-margin rifting to oceanic crustal spreading: Constraints from In-situ trace elements and Sr isotope of minerals".CHEMICAL GEOLOGY 589(2022):33. |
入库方式： OAI收割
来源：地质与地球物理研究所
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