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Origin of the disseminated magnetite pyroxenite in the Tieshanmiao-type iron deposits in the Wuyang region of Henan Province, China

文献类型：期刊论文

作者Yao, Tong1,2; Li, Hou-Min1; Li, Wen-Jun3; Li, Li-Xing1; Zhao, Chuang1,2
刊名JOURNAL OF ASIAN EARTH SCIENCES
出版日期2015-12-01
卷号113页码:1235-1252
关键词Banded pyroxene-magnetite quartzite Disseminated magnetite pyroxenite Iron deposits North China Craton Tieshanmiao
DOI10.1016/j.jseaes.2015.03.050
文献子类Article
英文摘要The Tieshanmiao-type iron deposits in the southern North China Craton comprise two types of ores: banded pyroxene magnetite quartzite (BMQ) and disseminated magnetite pyroxenite (DMP). Whether the quartz-poor DMP represents metamorphosed iron-bearing ultramafic rocks or chemical sedimentary rocks is still unclear. Pyroxene compositions in the DMP are low in Al2O3 and TiO2, which are similar to those from the BMQ and altered marble and pyroxenite. However, the compositions are different from those in the metamorphosed ultramafic rocks. The DMP and BMQ also show similar major element contents, with dominant SiO2, total Fe2O3, CaO, MgO but low contents of Al2O3, TiO2, MnO, Na2O, K2O, indicating a similar source through submarine chemical precipitation with little input from terrestrial or volcanic materials. The BMQ, DMP and magnetite separates from these rocks exhibit seawater-like signatures of REE patterns with LREE depletion, positive La, Gd and Y anomalies and high Y/Ho ratios, indicating that seawater participated in the formation of the iron ores. Combined with strong positive Eu anomalies, we infer that the deposition of the BMQ and DMP was mainly controlled by the mixing of seawater with hydrothermal fluids. The lack of negative Ce anomalies of the DMP, BMQ and magnetite separates indicate an anoxic marine environment. The DMP is rich in carbonate but relatively poor in silica and the BMQ is rich in silica but poor in carbonate. The protoliths of the DMP and BMQ in the Tieshanmiao-type iron deposits are inferred to be quartz carbonate iron-bearing formations which underwent subsequent metamorphism. (C) 2015 Elsevier Ltd. All rights reserved.
WOS关键词RARE-EARTH-ELEMENTS ; PLASMA-MASS-SPECTROMETRY ; ICP-MS ; GEOCHEMICAL CHARACTERISTICS ; PALEOPROTEROZOIC EVOLUTION ; EXTRACTION CHROMATOGRAPHY ; GEOLOGICAL-MATERIALS ; HYDROTHERMAL FLUIDS ; TRACE-ELEMENT ; KEY ISSUES
WOS研究方向Geology
语种英语
WOS记录号WOS:000367406600018
资助机构National Basic Research Program of China (973 Program)(2012CB416801) ; National Basic Research Program of China (973 Program)(2012CB416801) ; Geological Survey Program of China(12120113090400) ; Geological Survey Program of China(12120113090400) ; Special Research Funding for the Public Benefits - MIR(201111002 ; Special Research Funding for the Public Benefits - MIR(201111002 ; 200911007-15) ; 200911007-15) ; National Basic Research Program of China (973 Program)(2012CB416801) ; National Basic Research Program of China (973 Program)(2012CB416801) ; Geological Survey Program of China(12120113090400) ; Geological Survey Program of China(12120113090400) ; Special Research Funding for the Public Benefits - MIR(201111002 ; Special Research Funding for the Public Benefits - MIR(201111002 ; 200911007-15) ; 200911007-15)
源URL[http://ir.iggcas.ac.cn/handle/132A11/62134]  
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
作者单位1.Chinese Acad Geol Sci, Inst Mineral Resources, MLR Key Lab Metallogeny & Mineral Assessment, Beijing 100037, Peoples R China
2.China Univ Geosci, Fac Geosci & Resources, Beijing 100083, Peoples R China
3.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Mineral Resources, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714		 Yao, Tong,Li, Hou-Min,Li, Wen-Jun,et al. Origin of the disseminated magnetite pyroxenite in the Tieshanmiao-type iron deposits in the Wuyang region of Henan Province, China[J]. JOURNAL OF ASIAN EARTH SCIENCES,2015,113:1235-1252.
APA Yao, Tong,Li, Hou-Min,Li, Wen-Jun,Li, Li-Xing,&Zhao, Chuang.(2015).Origin of the disseminated magnetite pyroxenite in the Tieshanmiao-type iron deposits in the Wuyang region of Henan Province, China.JOURNAL OF ASIAN EARTH SCIENCES,113,1235-1252.
MLA Yao, Tong,et al."Origin of the disseminated magnetite pyroxenite in the Tieshanmiao-type iron deposits in the Wuyang region of Henan Province, China".JOURNAL OF ASIAN EARTH SCIENCES 113(2015):1235-1252.

入库方式： OAI收割

来源：地质与地球物理研究所

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