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矿床地质  2002 

甘肃北山南带韧性剪切带型金矿床构造控矿解析

Keywords: 构造控矿解析,金矿床,韧性剪切带,北山南带,甘肃省

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Abstract:

通过研究不同层次的韧性剪切带与金矿化的关系及含金裂隙类型,结合地质地球化学和磁组构分析,探讨了韧性剪切带对金矿化的控制作用。认为韧性剪切带的控矿作用表现为在区域上控制金矿床(点)的分布,在矿床范围内,它既是唯一的赋(含)矿构造,也控制着矿化带和矿体的形态、产状、规模和分布,在矿床成因上决定了金矿化以蚀变糜棱岩型为主,同时韧性剪切变形及其形成的动力变质热液是金矿成矿流体的来源之一。

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