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Paleoproterozoic granulites from the Xinghe graphite mine, North China Craton: Geology, zircon U-Pb geochronology and implications for the timing of deformation, mineralization and metamorphism

文献类型：期刊论文

作者Zhang, Hua-Feng1; Zhai, Ming-Guo2; Santosh, M.1,3; Wang, Hao-Zheng2; Zhao, Lei2; Ni, Zhi-Yao4
刊名ORE GEOLOGY REVIEWS
出版日期2014-12-01
卷号63页码:478-497
关键词Zircon U-Pb geochronology Khondalite Graphite deposit Huangtuyao North China Craton
ISSN号0169-1368
DOI10.1016/j.oregeorev.2014.03.014
文献子类Article
英文摘要The Xinghe graphite deposit is located in the north-central part of the North China Craton (NCC) where Archean gray gneiss, metasedimentary rocks (khondalites) and mafic (high-pressure) granulites constitute the dominant rock types. In this study, we report results of detailed geological and structural mapping around the Xinghe graphite mine. We identify three stages of deformation (D-1-D-3) and the graphite mineralization is correlated with D-1 or between D-1 and D-2. The first stage of deformation represented by rootless intrafolial folds whose axial surface cuts across the regional penetrative gneissosity (S-2) of D-2, was constrained at ca. 1.95-1.90 Ga by U-Pb age of zircon grains from a mafic high-pressure granulite. The second stage of deformation is represented by tight folds with formation of regional penetrative foliation and strong ductile shearing, when garnet broke down to plagioclase + pyroxene. This stage is dated as ca 1.85 Ga, from U-Pb analysis of zircons in leucosome from a migmatitic gneiss. The third stage of deformation is represented by large scale folding, which probably formed between 1.85 and 1.80 Ga, as constrained from the ca. 1.80 Ga emplacement age of an undeformed pegmatite that cuts across the host metasediments. Prior to the high-pressure granulite metamorphism, voluminous ca. 2.15-2.0 Ga granites were emplaced within the khondalites. The graphitization postdates the emplacement of these granites as deduced from the presence of flaky graphites in the metagranites. The protolith of the mafic high-pressure granulite dike that intruded the khondalite at ca. 2.0 Ga was also metamorphosed at 1.95-1.90 Ga, and is part of the exploited graphite ore body. We therefore constrain the timing of graphite mineralization to be between ca. 1.95 and 1.85 Ga. Our geological and geochronological data indicate that all the rock units in the Xinghe graphite mine were subjected to high-pressure granulite fades metamorphism at ca. 1.95-1.90 Ga. (C) 2014 Elsevier B.V. All rights reserved.
WOS关键词ULTRAHIGH-TEMPERATURE METAMORPHISM ; HEBEI PROVINCE CONSTRAINTS ; HIGH-PRESSURE GRANULITES ; HF ISOTOPIC EVIDENCE ; LA-ICP-MS ; KHONDALITE BELT ; TECTONIC EVOLUTION ; INNER-MONGOLIA ; SHRIMP ZIRCON ; HENGSHAN COMPLEX
WOS研究方向Geology ; Mineralogy ; Mining & Mineral Processing
语种英语
WOS记录号WOS:000340975300033
出版者ELSEVIER SCIENCE BV
资助机构973 Program(2012CB416603 ; 973 Program(2012CB416603 ; National Natural Science Foundation of China(41030316 ; National Natural Science Foundation of China(41030316 ; 2012CB416606) ; 2012CB416606) ; 41210003) ; 41210003) ; 973 Program(2012CB416603 ; 973 Program(2012CB416603 ; National Natural Science Foundation of China(41030316 ; National Natural Science Foundation of China(41030316 ; 2012CB416606) ; 2012CB416606) ; 41210003) ; 41210003) ; 973 Program(2012CB416603 ; 973 Program(2012CB416603 ; National Natural Science Foundation of China(41030316 ; National Natural Science Foundation of China(41030316 ; 2012CB416606) ; 2012CB416606) ; 41210003) ; 41210003) ; 973 Program(2012CB416603 ; 973 Program(2012CB416603 ; National Natural Science Foundation of China(41030316 ; National Natural Science Foundation of China(41030316 ; 2012CB416606) ; 2012CB416606) ; 41210003) ; 41210003)
源URL[http://ir.iggcas.ac.cn/handle/132A11/85928]  
专题中国科学院地质与地球物理研究所
通讯作者Zhang, Hua-Feng
作者单位1.China Univ Geosci, Sch Earth Sci & Resources, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China
3.Kochi Univ, Dept Nat Environm Sci, Fac Sci, Kochi 7808520, Japan
4.Chengdu Univ Technol, Coll Earth Sci, Chengdu 610059, Peoples R China
推荐引用方式
GB/T 7714		 Zhang, Hua-Feng,Zhai, Ming-Guo,Santosh, M.,et al. Paleoproterozoic granulites from the Xinghe graphite mine, North China Craton: Geology, zircon U-Pb geochronology and implications for the timing of deformation, mineralization and metamorphism[J]. ORE GEOLOGY REVIEWS,2014,63:478-497.
APA Zhang, Hua-Feng,Zhai, Ming-Guo,Santosh, M.,Wang, Hao-Zheng,Zhao, Lei,&Ni, Zhi-Yao.(2014).Paleoproterozoic granulites from the Xinghe graphite mine, North China Craton: Geology, zircon U-Pb geochronology and implications for the timing of deformation, mineralization and metamorphism.ORE GEOLOGY REVIEWS,63,478-497.
MLA Zhang, Hua-Feng,et al."Paleoproterozoic granulites from the Xinghe graphite mine, North China Craton: Geology, zircon U-Pb geochronology and implications for the timing of deformation, mineralization and metamorphism".ORE GEOLOGY REVIEWS 63(2014):478-497.

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来源：地质与地球物理研究所

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