The off-axis plume-ridge interaction model: Confirmation from the mineral chemistry of Cretaceous basalts of the Ontong Java Plateau
文献类型：期刊论文
| 作者 | Chen, Jing1,2,3; Chen, Shuang-Shuang1,2,3; Dingwell, Donald B.4; Gao, Rui1,2,5; Liu, Jia-Qi6 |
| 刊名 | CHEMICAL GEOLOGY
 |
| 出版日期 | 2023-02-05 |
| 卷号 | 617页码:19 |
| 关键词 | Off-axisplume-ridge interaction In-situ Sr isotope Mantle heterogeneities Large Igneous Province Ontong Java Plateau |
| ISSN号 | 0009-2541 |
| DOI | 10.1016/j.chemgeo.2022.121257 |
| 英文摘要 | The Ontong Java Plateau (OJP) is the largest known igneous province on Earth. The proposal that its origins involved off-axis plume-ridge interactions remains highly controversial. Here we present new in-situ major (EPMA), trace element (LA-ICP-MS) and Sr isotopic (LA-MC-ICP-MS) characterization of clinopyroxene and plagioclase phases present in OJP tholeiitic basalts from Sites 1183, 1186, 1185, 1187. Site 1187 and Upper Site 1185 have yielded olivine tholeiites containing olivine, Ca-rich augite, Ca-deficient pigeonite, and plagioclase, inferred to be derived from higher degrees of partial melting of dominantly peridotitic mantle and reflecting relatively low crystallization temperatures. Sites 1183 and 1186 and Lower Site 1185 yielded tholeiitic basalts consisting mainly of plagioclase and Ca-rich augite without olivine, interpreted to originate from lower degrees of partial melting of pyroxenite-and peridotite-derived melts with relatively high clinopyroxene and plagioclase crystallization temperatures. Site 1187 and Upper Site 1185 plagioclase, clinopyroxene, and equilibrium melts have much lower REE contents but slightly higher in-situ Sr isotopic ratios compared to those phases at Sites 1183 and 1186 as well as Lower Site 1185. Sites 1186 and 1187 plagioclases and clinopyroxenes display normal zoned textures which are attributed to the process of fractional crystallization and extensive magma mixing beneath the heterogeneous mantle source. In-situ Sr isotopic disequilibrium between plagioclase phenocrysts and plagioclase clusters further indicates an enriched compositional heterogeneity. Due to the strong tensile forces expected at the spreading ridge, the OJP off-axis mantle plume is inferred to be drawn towards the ridge axis, leading to shifts in mineral compositions, degrees of partial melting, and crystallization temperatures inferred for the volcanics of Sites 1183, 1186, 1185, and 1187 as a function of distance from the spreading ridge. The enriched invariability of in-situ Sr isotopic compositions is likely due to the relatively long half-life of the radiogenic elements. These mineral chemistries are consistent with off-axis ridge-plume interaction. |
| WOS关键词 | SR ISOTOPE DISEQUILIBRIUM ; LARGE IGNEOUS PROVINCES ; MANTLE SOURCE ; OCEANIC PLATEAUS ; MANIHIKI PLATEAU ; SOLOMON-ISLANDS ; FLOOD BASALTS ; OLIVINE ; ORIGIN ; PERIDOTITE |
| 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[22qntd2101] ; 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] ; ERC 2018 ADV Grant[834255] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000905419500001 |
| 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) ; 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 ; 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 ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; ERC 2018 ADV Grant ; ERC 2018 ADV Grant ; 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 ; 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 ; 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 ; ERC 2018 ADV Grant ; ERC 2018 ADV Grant ; 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 ; 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 ; 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 ; ERC 2018 ADV Grant ; ERC 2018 ADV Grant ; 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 ; 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 ; 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 ; ERC 2018 ADV Grant ; ERC 2018 ADV Grant |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/106942]  |
| 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 | Chen, Shuang-Shuang; Dingwell, Donald B. |
| 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.Guangdong Prov Key Lab Geol Proc & Mineral Resourc, Guangzhou 510275, Peoples R China 4.Ludwig Maximilians Univ Munchen, Dept Earth & Environm Sci, Munich, Germany 5.Chinese Acad Sci, Inst Tibetan Plateau Res, State Key Lab Tibetan Plateau Earth Syst Environm, Beijing 100101, Peoples R China 6.Inst Geol & Geophys, Chinese Acad Sci, Key Lab Cenozo Geol & Environm, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Jing,Chen, Shuang-Shuang,Dingwell, Donald B.,et al. The off-axis plume-ridge interaction model: Confirmation from the mineral chemistry of Cretaceous basalts of the Ontong Java Plateau[J]. CHEMICAL GEOLOGY,2023,617:19. |
| APA | Chen, Jing,Chen, Shuang-Shuang,Dingwell, Donald B.,Gao, Rui,&Liu, Jia-Qi.(2023).The off-axis plume-ridge interaction model: Confirmation from the mineral chemistry of Cretaceous basalts of the Ontong Java Plateau.CHEMICAL GEOLOGY,617,19. |
| MLA | Chen, Jing,et al."The off-axis plume-ridge interaction model: Confirmation from the mineral chemistry of Cretaceous basalts of the Ontong Java Plateau".CHEMICAL GEOLOGY 617(2023):19. |
入库方式： OAI收割
来源：地质与地球物理研究所
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