亦论韧性剪切变形与金的成矿作用——与邵世才《试论韧性剪切变形与金的成矿》一文的讨论

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剪切带型金矿是一种重要的金矿类型.韧性-超韧性深层次剪切变形是促使Au元素活化分异、形成动力变质含金热液的过程,中浅层次的韧脆性、脆性剪切变形区是Au元素聚集成矿部位.韧脆性剪切带的不同变形层次及其构造岩类型决定了剪切带型金矿床的矿化类型.剪切带型金矿床往往具有成矿时代滞后、空间规模差异、物源指示差异、韧性变形强度与Au元素含量反相关等异常特征.长期演化的造山带附近及边缘是寻找大型剪切带型金矿床的有利地区. Shear zone gold is an important gold type. Ductile-super-ductile deep-shear deformation is the process of promoting the activation and differentiation of Au elements and forming a dynamic metamorphic gold-bearing hydrothermal solution. The ductile-brittle and brittle shear deformation zones in the middle and shallow levels are the sites where Au elements accumulate. The different deformation levels of ductile-brittle shear zones and their tectonic rocks determine the type of mineralization in the shear zone gold deposits. Shear zone type gold deposits often have the characteristics of anomalies such as lag time of mineralization, spatial scale difference, indication of source, anti-correlation between ductile deformation strength and Au element content. Long-term evolution of the orogenic belt and the vicinity of the edge is to find a large shear zone gold zone favorable areas.
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