中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地质与地球物理研究所
  3. 中国科学院地质与地球物理研究所
  4. 中国科学院地球与行星物理重点实验室
Lithium isotope fractionation during magmatic differentiation and hydrothermal processes in post-collisional adakitic rocks

文献类型：期刊论文

作者Tian, Heng-Ci1; Tian, Shi-Hong2,3; Hou, Zeng-Qian4; Yang, Zhi-Ming4; Zheng, Yuanchuan5,6
刊名GEOCHIMICA ET COSMOCHIMICA ACTA
出版日期2022-09-01
卷号332页码:19-32
ISSN号0016-7037
关键词southern Tibet Adakite-like rocks Li isotopes Magmatic-hydrothermal fluids Metal mineralization
DOI10.1016/j.gca.2022.06.010
英文摘要To investigate the behavior of Li isotopes during magmatic differentiation and the petrogenesis of Cu-bearing ore deposits, a suite of post-collisional adakitic rocks from Qulong region, southern Tibet, was studied. Their lithologies range from diorite through granodiorite to granite porphyry with the latter containing giant Cu deposits. Detailed evidence of field observation and geochemical signature suggest that these three sets of rocks were most likely formed by various degrees of partial melting and fractional crystallization from the same source. The dioritic enclave, granodiorite and granite porphyry have d7Li values ranging from 0.2 to 8.2 parts per thousand , 3.1 to 6.8 parts per thousand , and 3.9 to 7.4 parts per thousand , respectively. Most of these samples are overlapping in Li isotope composition, comparable to other granitoids worldwide, indicating insignificant Li isotope fractionation during partial melt-ing and magma differentiation in adakite-like rocks. By contrast, their Li concentrations are mainly controlled by fractional crystallization as suggested from different modal mineralogy. This process does not lead to further enrichment of Cu although they have initial high concentrations (an average of similar to 104 ppm). In comparison, granite porphyry has extremely high Cu con-tents (up to 2000 ppm) and their d7Li values are positively correlated with Cu content, suggesting the involvement of mag-matic fluids that most likely exsolved from deep magma chamber. Such fluids not only modified the Li isotopic compositions of granite porphyries, but also extracted metal elements from the highly evolved magma, eventually resulting in the Cu mineralization. Our work here provides new insight into the formation and evolution of the porphyry Cu -bearing deposit.(c) 2022 Elsevier Ltd. All rights reserved.
WOS关键词CONTINENTAL COLLISION ZONES ; CU-MO DEPOSIT ; PORPHYRY CU ; LOWER CRUST ; LHASA TERRANE ; ORE-DEPOSITS ; ARC MAGMAS ; CONSTRAINTS ; ORIGIN ; MELT
资助项目National Natural Science Foundation of China[41773014] ; National Natural Science Foundation of China[41173003] ; National Natural Science Foundation of China[41373014] ; Jiangxi Province[2020101003] ; East China University of Technology[1410000874] ; Youth Innovation Promotion Association of the Chinese Academy of Sciences[2022064]
WOS研究方向Geochemistry & Geophysics
语种英语
出版者PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号WOS:000861292500002
资助机构National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Jiangxi Province ; Jiangxi Province ; Jiangxi Province ; Jiangxi Province ; East China University of Technology ; East China University of Technology ; East China University of Technology ; East China University of Technology ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Jiangxi Province ; Jiangxi Province ; Jiangxi Province ; Jiangxi Province ; East China University of Technology ; East China University of Technology ; East China University of Technology ; East China University of Technology ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Jiangxi Province ; Jiangxi Province ; Jiangxi Province ; Jiangxi Province ; East China University of Technology ; East China University of Technology ; East China University of Technology ; East China University of Technology ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Jiangxi Province ; Jiangxi Province ; Jiangxi Province ; Jiangxi Province ; East China University of Technology ; East China University of Technology ; East China University of Technology ; East China University of Technology ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences ; Youth Innovation Promotion Association of the Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/107804]  
专题地质与地球物理研究所_中国科学院地球与行星物理重点实验室
通讯作者Tian, Shi-Hong
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Earth & Planetary Phys, Beijing 100029, Peoples R China
2.East China Univ Technol, State Key Lab Nucl Resources & Environm, Nanchang 330013, Peoples R China
3.Chinese Acad Geol Sci, Inst Mineral Resources, Beijing 100037, Peoples R China
4.Chinese Acad Geol Sci, Inst Geol, Beijing 100037, Peoples R China
5.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
6.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Tian, Heng-Ci,Tian, Shi-Hong,Hou, Zeng-Qian,et al. Lithium isotope fractionation during magmatic differentiation and hydrothermal processes in post-collisional adakitic rocks[J]. GEOCHIMICA ET COSMOCHIMICA ACTA,2022,332:19-32.
APA Tian, Heng-Ci,Tian, Shi-Hong,Hou, Zeng-Qian,Yang, Zhi-Ming,&Zheng, Yuanchuan.(2022).Lithium isotope fractionation during magmatic differentiation and hydrothermal processes in post-collisional adakitic rocks.GEOCHIMICA ET COSMOCHIMICA ACTA,332,19-32.
MLA Tian, Heng-Ci,et al."Lithium isotope fractionation during magmatic differentiation and hydrothermal processes in post-collisional adakitic rocks".GEOCHIMICA ET COSMOCHIMICA ACTA 332(2022):19-32.

入库方式： OAI收割

来源：地质与地球物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。