| 甘肃耳阳沟铅锌矿地质特征及找矿标志 |
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| 引用本文： | 高永伟.甘肃耳阳沟铅锌矿地质特征及找矿标志[J].甘肃地质学报,2013,22(4):58-62. |
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| 作者姓名： | 高永伟 |
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| 作者单位： | [1]中国地质大学,湖北武汉433074 [2]甘肃省地质调查院,甘肃兰州730000 |
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| 摘 要： | 甘肃岷县耳阳沟铅锌矿处于西成矿田西延地段，茶埠一沟脑里帚状构造撒开部位，铅锌矿体主要分布在耳阳沟背斜北东翼的中泥盆统榆树坪组地层中，主要岩性为硅化灰岩、板岩、钙质粉砂岩，矿体的顶底板围岩均为泥灰岩．矿体与围岩界限比较明显。矿床平均品位Pb＋Zn为5．13％；伴生组分Ag、Cd等。文章通过探讨该矿床地质特征，从地质、化探等方面分析成矿条件，认为泥盆系是本区的矿源层；矿体赋存于NW向断裂蚀变带中，断裂为导矿、容矿构造，区内化探异常均与已知矿体相对应，是地质找矿的重要标志。区内围岩蚀变发育，也是重要的找矿标志。
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| 关 键 词： | 铅锌矿 地质特征 找矿标志 甘肃 |
Geological Features and Prospecting Indicators of Eryanggou Pb-Zn Deposit in Gansu Province |
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| GAO Yong-wei.Geological Features and Prospecting Indicators of Eryanggou Pb-Zn Deposit in Gansu Province[J].Acta Geologica Gansu,2013,22(4):58-62. |
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| Authors: | GAO Yong-wei |
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| Institution: | GAO Yong-wei (1. China University of Geosciences, Wuhan 430074, China; 2. Geological Survey of Gansu Province, Lanzhou 730000, China) |
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| Abstract: | Eryangou Pb-Zn deposit is situated at westwards extension of Xihe-Chenxian Pb-Zn ore field. Pb-Zn ore body occurred in Devonian Yushuping Formation which is composed of silicificated limestone, slate, calcareous siltstone, with an apparently boundary to the roof wall rock of marlstone. The average total Pb and Zn grade of deposit is 5.13% , and accompanying with Ag and Cd. The paper discussed geological setting and metallogenesis in view of geological and geochemical data. It is concluded that Devonian System is the source bed occurred fault alteration zone of NW direction, ore fluid transmitted through and deposited in the faults where outlined geochemical anomalies in this area. |
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| Keywords: | lead-zinc deposit geological characteristics prospecting Gansu |
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