| 陕西山阳县池沟地区地质特征与构造-岩浆-成矿作用分析 |
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| 引用本文： | 孟德明,王瑞廷,刘凯,郭延辉,李鹏辉.陕西山阳县池沟地区地质特征与构造-岩浆-成矿作用分析[J].西北地质,2014(1):116-126. |
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| 作者姓名： | 孟德明 王瑞廷 刘凯 郭延辉 李鹏辉 |
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| 作者单位： | 长安大学地球科学与资源学院;西北有色地质勘查局地质勘查院;西北有色地质勘查局713总队; |
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| 基金项目： | “十二五”国家科技支撑计划项目(2011BAB04B05)资助 |
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| 摘 要： | 陕西柞水-山阳盆地矿产资源丰富,其中池沟地区更是近几年来研究的热点。通过对区内蚀变分带、岩体特征、矿石特征及其相应的年龄测试的研究,结合内带(池沟地区)钼铜矿化、外围(白沙沟地区)金矿化特征,确定池沟铜钼矿与典型的斑岩型矿床类似,并取得了较大的勘查成果。笔者通过对池沟及周围地区的构造、岩浆作用研究,获得池沟地区在燕山早中期处于挤压向伸展过渡的阶段,容易诱发深部物质上涌,形成斑岩体,并建立了该环境下的构造-岩浆-成矿模型。构造不仅控制着岩浆的形态,而且对于矿体在成因上和空间上起着重要的控制作用,这对于确定岩体深部的延伸形态和下一步找矿工作的布置具有重大的指导意义。
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| 关 键 词： | 池沟地区 构造 岩浆 成矿 斑岩型铜矿 |
Geological Characteristics and Analysis of Tectonic -Magmatic-Mineralization in Chigou Area of Shanyang County,Shaanxi Province |
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| Institution: | MENG De-ming, WANG Rui-ting , LIU Kai , GUO Yan-hui , LI Peng-hui (1. School of Resources, Chang＇an University, Xi＇an 710054, China ; 2. Geological Exploration Institution of Northwest Mining and Geological Exploration for Nonferrous Metals, X i＇an 710054, China; 3. NO. 713 Geological Team, Northwest China Bureau of Geological Exploration for Nonferrous Metals, Shangluo 726000, China) |
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| Abstract: | Located in Zhashui-shanyang basin of abundant mineral resources, Chigou area has been attracting more and more concern in recent years. By studies on wall rock alteration, characteristics of magma, ore features and the their ages, combined with the characteristics of Cu-Mo inside（Chigou area） and Au outside（Baishagou area）, we have made progressive exploration achievements and confirmed that Chigou Cu-Mo deposit is similar to the typical porphyry ore deposits. Predecessors have done lots of researches related to mass bodies, but little attention has been paid to tectonics-magmatism. Through the tectonic and magmatic studies in Chigou area, we are informed that this area formed in the subduction to the extension stage during the early and middle Yanshanian. In that condition, the deep substance was easy to upwell and form porphyry. Based on the results, we established the model of tectonic-magma-mineralization in Zhashui-Shanyang area. The tectonics not only controls the magma forms, but also controls the mineralization in genesis and space. The finding has an important guiding significance to identify the extension of deep magma bodies and the prospecting work arrangement in the future. |
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| Keywords: | Chigou area tectonic magma mineralization porphyry ore |
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