中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Discovery of Late Triassic mineralization in the Gangdese Metallogenic Belt, Tibet: The Banduo Pb-Zn deposit, Somdo area

文献类型:期刊论文

作者Li, Lin-han2,3,4; Xie, Chao-ming1,2; Ren, Yun-sheng1,2; Yu, Yun-peng2; Dong, Yu-chao2; Gao, Zhong-wei2; Hao, Yu-jie1,2
刊名ORE GEOLOGY REVIEWS
出版日期2020-11-01
卷号126页码:13
ISSN号0169-1368
关键词Gangdese Metallogenic Belt Banduo Pb-Zn deposit Late Triassic granodiorite Sulfide Rb-Sr dating Metallogenic epoch
DOI10.1016/j.oregeorev.2020.103754
英文摘要The newly discovered Banduo Pb-Zn deposit in the Somdo area of Tibet is hosted by a Late Triassic granodiorite. A combination of zircon U-Pb dating, Hf isotopic compositions, sulfide Rb-Sr dating, and whole-rock chemistry was used to determine the age of the mineralization and characterize the metallogenesis of the posit. The weighted-mean U-Pb ages of zircon from the granodiorite (203.8 +/- 1.7 Ma, MSWD = 206.1 +/- 0.4 Ma, MSWD = 0.098) and the weighted-mean Rb-Sr isochron age of sulfides from the mineralization (202.7 +/- 2.3 Ma; MSWD = 1.3) suggest that the timing of mineralization was close to that granodiorite crystallization during the Late Triassic. The average (Sr-87/Sr-86)i value of 0.71026 implies that ore-forming metals were sourced from a mixture of mantle and crustal material. The weakly altered granodiorite of the deposit is characterized by SiO2 = 66.78-67.85 wt%, K2O = 2.57-3.37 wt%, Al2O3 = 13.53-15.15 and Mg# = 45.5-51.3. It is enriched in LREEs and LILEs and depleted in HREEs and HFSEs, and it exhibits negative Eu anomaly. The granodiorite has positive and negative epsilon Hf(t) values (-2.5 to 1.7) and crustal ages (TC DM) of 1.14-1.40 Ga. Hf isotopic analyses and whole-rock geochemistry indicate that the Late Triassic granodiorite was likely sourced from of a mixture of mantle and ancient lower-crust material that had undergone variable degrees of fractional crystallization. Based on regional data, the Banduo deposit is the oldest deposit in the Gangdese belt and likely formed as a result of the northward subduction of the Neo-Tethys Ocean. The metallogenic epoch indicates that deposits related to the northward subduction of the Neo-Tethys oceanic crust exist in this area. The Late Triassic age of granitoid-hosted mineralization provides additional prospects exploration in the Gangdese Metallogenic Belt.
WOS关键词ZIRCON U-PB ; PORPHYRY CU-AU ; S-TYPE GRANITES ; SOUTHERN TIBET ; TRACE-ELEMENT ; LHASA TERRANE ; RB-SR ; ISOTOPIC COMPOSITIONS ; XIONGCUN DISTRICT ; FLUID INCLUSION
资助项目China Geological Survey Project[DD20160015] ; National Natural Science Foundation of China[41872231] ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China[DBY-ZZ-18-06]
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
语种英语
出版者ELSEVIER
WOS记录号WOS:000589196900004
资助机构China Geological Survey Project ; China Geological Survey Project ; China Geological Survey Project ; China Geological Survey Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China ; China Geological Survey Project ; China Geological Survey Project ; China Geological Survey Project ; China Geological Survey Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China ; China Geological Survey Project ; China Geological Survey Project ; China Geological Survey Project ; China Geological Survey Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China ; China Geological Survey Project ; China Geological Survey Project ; China Geological Survey Project ; China Geological Survey Project ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China ; Independent research fund of Key Laboratory of Mineral Resources Evaluation in Northeast Asia, Ministry of Land and Resources of China
源URL[http://ir.iggcas.ac.cn/handle/132A11/98691]  
专题地质与地球物理研究所_中国科学院矿产资源研究重点实验室
通讯作者Xie, Chao-ming
作者单位1.Minist Land & Resources China, Key Lab Mineral Resources Evaluat Northeast Asia, Changchun 130061, Peoples R China
2.Jilin Univ, Coll Earth Sci, 2199 Jianshe St, Changchun 130061, Peoples R China
3.Univ Chinese Acad Sci, Coll Earth & Planetary Sci, Beijing 100049, Peoples R China
4.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714
Li, Lin-han,Xie, Chao-ming,Ren, Yun-sheng,et al. Discovery of Late Triassic mineralization in the Gangdese Metallogenic Belt, Tibet: The Banduo Pb-Zn deposit, Somdo area[J]. ORE GEOLOGY REVIEWS,2020,126:13.
APA Li, Lin-han.,Xie, Chao-ming.,Ren, Yun-sheng.,Yu, Yun-peng.,Dong, Yu-chao.,...&Hao, Yu-jie.(2020).Discovery of Late Triassic mineralization in the Gangdese Metallogenic Belt, Tibet: The Banduo Pb-Zn deposit, Somdo area.ORE GEOLOGY REVIEWS,126,13.
MLA Li, Lin-han,et al."Discovery of Late Triassic mineralization in the Gangdese Metallogenic Belt, Tibet: The Banduo Pb-Zn deposit, Somdo area".ORE GEOLOGY REVIEWS 126(2020):13.

入库方式: OAI收割

来源:地质与地球物理研究所

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