矿区地质概况本区位于江南古陆南边一个更次级地台的东南缘,构成某一大背斜的西翼。出露地层为中上泥盆统,从东到西依次西倾产出(图1)。各层岩性特征简列于表1。该表明显地反映了本区地台沉积的特点。当时的沉积环境动荡频繁,而升降幅度却不大。榴江组上段普遍揉皱,该段上部常形成一些小向 Geological overview of the mining area This area is located in the southeastern margin of a more subterranean platform to the south of the southern South China Sea and forms the west wing of a certain large anticline. Exposed to the Upper Middle Devonian strata, in turn from west to east output (Figure 1). The lithology features of each layer are summarized in Table 1. The table clearly shows the characteristics of the platform deposits in this area. Sediment environment was volatile at that time, but the lift is not large. The upper section of the Liujiang Formation is generally crumpled, and the upper part of the section often forms a small aspect