Barium isotope evidence for the role of magmatic fluids in the origin of Himalayan leucogranites
文献类型：期刊论文
| 作者 | Huang, Fang2,3; Bai, Ruixia3; Deng, Gengxin3; Liu, Xiaochi1 ; Li, Xianhua1
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| 刊名 | SCIENCE BULLETIN
 |
| 出版日期 | 2021-11-30 |
| 卷号 | 66期号:22页码:2329-2336 |
| 关键词 | Himalaya Leucogranite Barium isotopes Fluid interaction Rare-metal mineralization |
| ISSN号 | 2095-9273 |
| DOI | 10.1016/j.scib.2021.07.020 |
| 英文摘要 | As an important post-collisional magmatic product in the orogenic belt, the Himalayan leucogranites are the critical host rocks for a number of rare-metal mineralization (such as Li, Be, Cs, Rb, Nb, Ta, and Sn). However, there is still a lack of good understanding on the formation and evolution of the leucogranites. Particularly, the role of the magmatic fluids in transporting and enriching the rare elements is not clear. Here we measure Ba isotope compositions for leucogranites from the Kampa Dome of the Himalayan belt to understand the fluid activity and behavior of fluid-mobile elements during leucogranite formation. Our results show that the 6138/134Ba of leucogranites range from -1.32 parts per thousand to +0.12 parts per thousand, much lower than the literature values for S-type granites and various sedimentary materials, suggesting that the Ba isotope compositions of the leucogranites does not reflect the sedimentary source signatures. Instead, their low 6138/134Ba is accompanied by non-charge-and-radius-controlled (CHARAC) twin-element (such as Nb/ Ta) behaviors, clearly showing the involvement of magmatic fluids during magma evolution. Experimental studies suggest that the low 6138/134Ba of the magmatic fluids most likely results from exsolution from a large deep magma reservoir. Such fluids not only modified Ba isotope compositions of the leucogranites, but also transported many fluid-mobile metal elements which may help form the rare metal ore deposits. Therefore, Ba isotope data provide new insights into formation and evolution of magmatic fluids and exploration of the rare-metal mineralization. (c) 2021 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved. |
| WOS关键词 | CRUSTAL ANATEXIS ; HUNAN PROVINCE ; SOUTH CHINA ; U-PB ; TETHYAN HIMALAYA ; TRACE-ELEMENTS ; ICP-MS ; FRACTIONATION ; CONSTRAINTS ; MINERALIZATION |
| 资助项目 | National Natural Science Foun-dation of China[41803003] |
| WOS研究方向 | Science & Technology - Other Topics |
| 语种 | 英语 |
| WOS记录号 | WOS:000702915700013 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China ; National Natural Science Foun-dation of China |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/102735]  |
| 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 | Huang, Fang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China 2.Univ Sci & Technol China, CAS Ctr Excellence Comparat Planetol, Hefei 230026, Peoples R China 3.Univ Sci & Technol China, Sch Earth & Space Sci, CAS Key Lab Crust Mantle Mat & Environm, Hefei 230026, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Fang,Bai, Ruixia,Deng, Gengxin,et al. Barium isotope evidence for the role of magmatic fluids in the origin of Himalayan leucogranites[J]. SCIENCE BULLETIN,2021,66(22):2329-2336. |
| APA | Huang, Fang,Bai, Ruixia,Deng, Gengxin,Liu, Xiaochi,&Li, Xianhua.(2021).Barium isotope evidence for the role of magmatic fluids in the origin of Himalayan leucogranites.SCIENCE BULLETIN,66(22),2329-2336. |
| MLA | Huang, Fang,et al."Barium isotope evidence for the role of magmatic fluids in the origin of Himalayan leucogranites".SCIENCE BULLETIN 66.22(2021):2329-2336. |
入库方式： OAI收割
来源：地质与地球物理研究所
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