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万秋, 杜建国. 铜陵深部成矿与找矿方向探讨[J]. 西北地质, 2015, 48(2): 205-215.
引用本文: 万秋, 杜建国. 铜陵深部成矿与找矿方向探讨[J]. 西北地质, 2015, 48(2): 205-215.
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WAN Qiu, DU Jianguo. Discussion on Deep Mineralization and Exploration Direction of Tongling[J]. Northwestern Geology, 2015, 48(2): 205-215.
Citation: WAN Qiu, DU Jianguo. Discussion on Deep Mineralization and Exploration Direction of Tongling[J]. Northwestern Geology, 2015, 48(2): 205-215.
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铜陵深部成矿与找矿方向探讨

  • 安徽省地质调查院, 安徽 合肥 230001

  • 基金项目: 中国地质调查局深部矿产资源远景调查示范项目"安徽铜陵地区深部矿产资源调查评价"资助

Discussion on Deep Mineralization and Exploration Direction of Tongling

  • Anhui Institute of Geological Survey, Hefei 230001, Anhui, China

    摘要
  • 从铜陵地区成矿的地质条件和成矿地质特征出发, 笔者系统总结前人的研究成果, 对铜陵矿集区的深部成矿作用与过程进行了深入探讨。构造分析显示铜陵地区盖层具有多期多个变形系统, 以上褶下断为主, 志留系以下的地层变形性质可能已经改变;岩浆作用显示含矿岩体以同熔型花岗岩类为主, 岩浆岩具有明显的成矿专属性特征, 与铜金矿关系密切的岩石主要属高钾钙碱性系列岩石, 成铁、硫的火山-侵入体主要为橄榄安粗岩系列。岩浆岩空间分布主要受构造控制, 岩浆热液的运移深部以中尺度渗流为主, 浅部以"岩脉"式上侵, 成矿岩体与围岩存在一定的耦合关系, 成矿时代以燕山期为主。通过对矿床的分布、类型及成矿规律的总结, 结合成矿预测理论, 对研究区的成矿部位、类型及地段进行了预测, 对铜陵地区深部找矿的方向有一定指示意义。
    According to metallogenic geological conditions and characteristics of Tongling area, and results of previous studies, deep mineralization and its process were discussed in this paper. Structural analysis shows that the Tongling area covers more than one deformation system with multiple stages. The deformation is dominant by fold and fault, and the deformation properties of strata below Silurian may have already changed; magmatic process showsthat ore-bearing rock are mainly syntectic granitoid;magma tite has obvious mineralization-exclusive characteristics. Copper-gold related rocks are mainly high-K calc-alkaline rocks, while iron-bearing and sulfur-bearing volcanic intrusionsare basically kohalaite rock series. Spatial distribution of magmatic rocks is mainly controlled by tectonic structure; magmatic hydrothermal migration in deep percolation is of middle scale, intruding upward in shallow as dykes. There is certain coupling relationship between ore-forming rock and surrounding rock. The ore mineralization takes place in Yanshanian. The summary of deposit distribution, types and mineralization law, combined with the mineralization prediction theory, the mineralization area, type and location were predicted.The study can provide reference forthe deep exploration in the Tongling area.
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收稿日期:  2014-09-12
修回日期:  2015-03-06
刊出日期:  2015-06-15

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