Low-Degree Melt Metasomatic Origin of Global Upper Mantle Fe Isotope Fractionation
文献类型：期刊论文
| 作者 | Guo, Pengyuan1,2; Niu, Yaoling2; Sun, Pu1,2 ; Chen, Shuo1,2; Chen, Yanhong3; Duan, Meng1,2; Wang, Xiaohong1,2; Gong, Hongmei1,2
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| 刊名 | GEOPHYSICAL RESEARCH LETTERS
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| 出版日期 | 2023-07-28 |
| 卷号 | 50期号:14页码:10 |
| ISSN号 | 0094-8276 |
| 关键词 | mantle metasomatism upper mantle Fe isotope fractionation continental alkali basalt |
| DOI | 10.1029/2022GL102264 |
| 通讯作者 | Guo, Pengyuan(guopy@qdio.ac.cn) |
| 英文摘要 | The upper mantle is heterogeneous in Fe isotope compositions, but the origin of the heterogeneity needs understanding. Recent studies on oceanic basalts demonstrate that the upper mantle Fe isotope heterogeneity results from low-degree melt metasomatism. However, whether this hypothesis is of global significance needs testing in continental settings. Here we present an Fe isotopic study on intraplate continental alkali basalts from continental China, which are shown to have derived from upper mantle containing more metasomatized lithologies. The results show first-order positive correlations of delta Fe-56 with indices of low-degree melt metasomatism (e.g., [La/Sm](N)), which, together with the so-far published mid-ocean ridge basalts data, define global trends, substantiating the global significance of low-degree melt metasomatism in causing upper mantle Fe isotope variation. We, thus, suggest that low-degree melt metasomatism is a globally effective process to preferentially concentrate heavy Fe isotopes in metasomatic lithologies at upper mantle conditions both today and in Earth's history. |
| WOS关键词 | OCEAN ISLAND BASALTS ; EAST PACIFIC RISE ; CENOZOIC BASALTS ; CHEMICAL-COMPOSITION ; CHINA EVIDENCE ; BENEATH ; HETEROGENEITY ; GEOCHEMISTRY ; CRUST ; MORB |
| 资助项目 | We thank editorial handling by Christian Huber and constructive comments from two journal reviewers. P.Y. thank Fu-Ping Pei for providing several samples in this study. This work is financially supported by National Natural Science Foundation of China Gran[42076048] ; We thank editorial handling by Christian Huber and constructive comments from two journal reviewers. P.Y. thank Fu-Ping Pei for providing several samples in this study. This work is financially supported by National Natural Science Foundation of China Gran[91958215] ; We thank editorial handling by Christian Huber and constructive comments from two journal reviewers. P.Y. thank Fu-Ping Pei for providing several samples in this study. This work is financially supported by National Natural Science Foundation of China Gran[41776067] ; National Natural Science Foundation of China |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| 出版者 | AMER GEOPHYSICAL UNION |
| WOS记录号 | WOS:001093766900001 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/181598]  |
| 专题 | 海洋研究所_海洋地质与环境重点实验室 |
| 通讯作者 | Guo, Pengyuan |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao, Peoples R China 2.Laoshan Lab, Qingdao, Peoples R China 3.China Univ Geosci, Sch Ocean Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo, Pengyuan,Niu, Yaoling,Sun, Pu,et al. Low-Degree Melt Metasomatic Origin of Global Upper Mantle Fe Isotope Fractionation[J]. GEOPHYSICAL RESEARCH LETTERS,2023,50(14):10. |
| APA | Guo, Pengyuan.,Niu, Yaoling.,Sun, Pu.,Chen, Shuo.,Chen, Yanhong.,...&Gong, Hongmei.(2023).Low-Degree Melt Metasomatic Origin of Global Upper Mantle Fe Isotope Fractionation.GEOPHYSICAL RESEARCH LETTERS,50(14),10. |
| MLA | Guo, Pengyuan,et al."Low-Degree Melt Metasomatic Origin of Global Upper Mantle Fe Isotope Fractionation".GEOPHYSICAL RESEARCH LETTERS 50.14(2023):10. |
入库方式： OAI收割
来源：海洋研究所
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