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  2. 地质与地球物理研究所
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  4. 岩石圈演化国家重点实验室
Garnet U-Pb and O isotopic determinations reveal a shear-zone induced hydrothermal system

文献类型：期刊论文

作者Zang, Zhongjiang3; Dong, Leilei1,2,4; Liu, Wei1,2; Zhao, Han1,2; Wang, Xinshui5; Cai, Keda6,7; Wan, Bo1,2
刊名SCIENTIFIC REPORTS
出版日期2019-07-17
卷号9页码:10
ISSN号2045-2322
DOI10.1038/s41598-019-46868-4
英文摘要The absolute crystallization ages of minerals from hydrothermal fluids measured in situ can unravel the timing of key events leading to the formation of, for instance, ore deposits and hydrothermally derived geological terrains. In this study, a skarn iron deposit from northwest (NW) China is shown to have U-Pb garnet and U-Pb zircon ages of 254.2 +/- 1.7 Ma and 255.5 +/- 1.0 Ma, respectively, which are both significantly younger than magmatism and metamorphism of the region. This skarn age instead correlates with the occurrence of strike-slip and thrust faulting in the region. The water/rock mass ratio of 0.065 similar to 0.115 suggests the delta O-18 garnet composition is similar to 1 parts per thousand at temperatures ranging from 250-450 degrees C. The low oxygen isotopic composition indicates the role of meteoric water in the garnet formation. These measurements can be interpreted as the shear along faults circulating meteoric water similar to 10 km below the hanging wall of meta-volcanic sedimentary rock. Meteoric water in this hydrothermal system would leach cations from the meta-volcano-sedimentary rocks necessary for mineralization. Silica-rich hydrothermal fluid reacts with calcic-rich materials in the meta-volcano-sedimentary rocks, depositing the garnet and magnetite. Our work suggests that the shear zone is rich in ores, rendering this deposit for NW China a prospective source for future mineral resource exploration.
WOS关键词CHINESE ALTAI ; IRON DEPOSIT ; NW CHINA ; LU-HF ; SKARN ; GEOCHRONOLOGY ; GEOCHEMISTRY ; MINERALIZATION ; CONSTRAINTS ; PRESSURE
资助项目National Key R&D Program of China[2017YFC0601206] ; National Science Foundation of China[41672085] ; National Science Foundation of China[41525012] ; Chinese Academy of Sciences[2013047]
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000475832700026
出版者NATURE PUBLISHING GROUP
资助机构National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Key R&D Program of China ; National Key R&D Program of China ; National Science Foundation of China ; National Science Foundation of China ; Chinese Academy of Sciences ; Chinese Academy of Sciences
源URL[http://ir.iggcas.ac.cn/handle/132A11/92953]  
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Wan, Bo
作者单位1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing 100029, Peoples R China
2.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
3.China Univ Geosci, Fac Earth Resources, Wuhan 430074, Hubei, Peoples R China
4.Chinese Acad Geol Sci, Inst Geol, Key Lab Deep Earth Dynam, Beijing 100037, Peoples R China
5.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
6.China Univ Geosci, State Key Lab Geol Proc & Mineral Resources, Beijing 100083, Peoples R China
7.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Zang, Zhongjiang,Dong, Leilei,Liu, Wei,et al. Garnet U-Pb and O isotopic determinations reveal a shear-zone induced hydrothermal system[J]. SCIENTIFIC REPORTS,2019,9:10.
APA Zang, Zhongjiang.,Dong, Leilei.,Liu, Wei.,Zhao, Han.,Wang, Xinshui.,...&Wan, Bo.(2019).Garnet U-Pb and O isotopic determinations reveal a shear-zone induced hydrothermal system.SCIENTIFIC REPORTS,9,10.
MLA Zang, Zhongjiang,et al."Garnet U-Pb and O isotopic determinations reveal a shear-zone induced hydrothermal system".SCIENTIFIC REPORTS 9(2019):10.

入库方式： OAI收割

来源：地质与地球物理研究所

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