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地质论评  2007 

德兴金山金矿田不同尺度构造特征及其与成矿作用的关系

Keywords: 不同尺度构造,递进变形作用,成矿作用,金山金矿,江西

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Abstract:

德兴市金山金矿田是与赣东北深大断裂带内次一级剪切带有关的中温热液矿床。其矿石类型主要由与断裂充填有关的小尺度石英脉组成,这些石英脉主要呈纹层状。不同尺度的构造研究表明,金山金矿是同构造的产物,递进变形作用与成矿作用密切相关,在成矿过程中,普遍发育压溶作用,导致早期的石英颗粒发生溶解以及形成黄铁矿压力影。金山金矿蚀变硫化物以黄铁矿为主,说明成矿流体中硫主要以H2S和HS-形式存在。断层阀机制引起压力波动,进而导致成矿流体的相分离和水―岩反应,是金山金矿的主要成矿机制。

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