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矿床地质  2002 

盆地流体动力学演化及其成矿效应——以广东富湾-长坑银金矿床为例

Keywords: 盆地,流体,成矿作用,动力学,金矿,银矿

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Abstract:

文章以广东富湾-长坑层控银金矿床为实例,基于各阶段盆地中温度场、压力场和流动场的动力学演化过程与成矿效应的研究,发现盆地流体转变为成矿流体具有漫长的演化与更迭历程;构造演化和盆地的沉积充填特征,不仅直接影响着流体在盆地中的流动样式,而且直接影响着成矿物质空间存在形式的变化以及“流体_岩石”体系中各要素间的再分配。流体的大规模活动及大型矿床的形成与大幅度的构造运动、沉积作用、岩浆活动、火山活动等宏观地球动力作用有关,盆地边缘沟通深部的垂向断裂与浅部不整合面_侧向断裂交汇地段是成矿物质堆积的最佳场所。

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