| 太行山南段北洺河铁矿S、Pb同位素组成及其对成矿物质来源的示踪 |
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| 引用本文： | 王艳娟,胡援越,申俊峰,曲凯,殷娜,于洪军,马广刚.太行山南段北洺河铁矿S、Pb同位素组成及其对成矿物质来源的示踪[J].现代地质,2011,25(5):846-852. |
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| 作者姓名： | 王艳娟 胡援越 申俊峰 曲凯 殷娜 于洪军 马广刚 |
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| 作者单位： | 1. 地质过程与矿产资源国家重点实验室;中国地质大学地球科学与资源学院,北京100083
2. 五矿邯邢矿业有限公司符山铁矿,河北邯郸,056000 |
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| 基金项目： | 国家自然科学基金重大研究计划项目 |
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| 摘 要： | 北洺河铁矿是太行山南段邯邢地区主要铁矿床之一,属于二长闪长岩侵入中奥陶统石灰岩形成的典型矽卡岩型铁矿床。针对北洺河矿区矽卡岩和磁铁矿矿石进行了S、Pb同位素分析研究,并结合前人对岩体S、Pb同位素分析结果进行了成矿物质来源探讨。结果表明,北洺河铁矿成矿物质来源复杂,其中硫同位素δ34 S变化范围为12.2‰～16.5‰,明显偏离陨石硫范围,说明成矿物质来源与成矿围岩有关。特别是深部成矿流体在自下而上运移过程中,受围岩石灰岩地层中膏盐层的混染,体现出混合硫来源特点。铅同位素组成中,206Pb/204Pb=17.840～18.793,平均值为18.419;207Pb/204Pb=15.46～15.62,平均值为15.56;208Pb/204 Pb=37.927～39.301,平均值为38.730,表明铅的来源以下地壳铅源为主,兼混有少量幔源铅。
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| 关 键 词： | S、Pb同位素 成矿物质 北洺河铁矿 太行山南段 |
Sulfur and Lead Isotope Composition and Tracing for Sources of Ore-forming Materials in Beiming River Iron Deposits, Southern Taihang Mountains |
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| WANG Yan-juan,HU Yuan-yue,SHEN Jun-feng,QU Kai,YIN Na,YU Hong-jun,MA Guang-gang.Sulfur and Lead Isotope Composition and Tracing for Sources of Ore-forming Materials in Beiming River Iron Deposits, Southern Taihang Mountains[J].Geoscience——Journal of Graduate School,China University of Geosciences,2011,25(5):846-852. |
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| Authors: | WANG Yan-juan HU Yuan-yue SHEN Jun-feng QU Kai YIN Na YU Hong-jun MA Guang-gang |
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| Institution: | WANG Yan-juan1,HU Yuan-yue2,SHEN Jun-feng1,QU Kai1,YIN Na1,YU Hong-jun1,MA Guang-gang1 (1.State Key Laboratory of Geological Processes and Mineral Resources,School of Earth Sciences and Resources,China University of Geosciences,Beijing 100083,China,2.Fushan Iron Deposits,Hanxing Metallurgical Mining Co.Ltd,Handan,Hebei 056000,China) |
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| Abstract: | The Beiming River iron deposits as one of major typical skarn-type deposits are located in Hanxing area,southern Taihang Mountains.It was formed in the boundary between diorite intrusion and mid-Ordovician limestone.This paper analyzed the isotopic data of sulfur and lead for skarn and magnet ore of the deposits and discussed in further the ore source by comparison with existed isotopes data.From all of these,it is demonstrated that the iron deposits had multi-sources and the sulfur isotopes provided an evi... |
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| Keywords: | S and Pb isotope ore-forming material Beiming River iron deposit southern Taihang Mountains |
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