广西金牙金矿含金流体的动力学迁移

根据广西金牙及右江三叠纪贫地中的众多微细浸染型金矿床的均位于三叠纪盆地水下碳酸盐台地的边缘且弧形断裂的预顶部位这一事实,作者在金牙金矿物质和成矿流体来源于沉积盆地的基础上,对台地边缘区作沉积构造分析和流体动力学分析,应用流体势理论及数字化模拟技术得出;成矿流体在压力下趋于向台地边缘斜坡且弧形断裂的弧顶部位集中。

DYNAMIC MIGRATION OF METALLOGENIC GOLD-BEARING FLUID IN JINYA GOLD DEPOSITS, GUANGXI

The numerous micrograined_disseminated gold deposits in the Triassic basins of Jinya and Youjiang, Guangxi, are all located both in the margins of underwater carbonate platforms and in the top part of the arc faults of the Triassic basins. The investigations into the inorganic and organic geochemistry by the previous researchers and the present authors have concluded that the metallogenic materials and fluids in the Jinya gold deposits originated from the sedimentary basins. In this way, both the sedimentary structural analysis and the fluid dynamic analysis have been made of the terrain margins. The application of the fluid potential theory and the digital simulation technology concludes that metallogenic fluids originating from the basins tend to be concentrated at the abnormal pressure both in the marginal slopes of the terrains and in the top part of the arc faults. This conclusion serves as a theoretical basis for the gold exploration in this region.