桂东大瑶山隆起区深部构造特征与金矿成矿作用的关系

桂东大瑶山隆起区深部存在的北部ＥＷ向构造拗陷区、东部ＳＮ向构造坳陷区和西南部ＮＥ向构造隆起区，隆、坳转换带空间呈线性展布．构造坳陷区控制了该区岩浆活动的范围，转换带则是该区断裂构造活动、岩浆活动和金矿成矿作用的重要场所，所划分的近ＥＷ向、ＮＷ向转带和东南部构造坳陷区控制了该区金矿带和金化集中区，且不同的深部背景条件下，其金矿成矿作用、矿化特征等均有明显的差异．在转换带构造隆起区一侧金矿成矿作用以变质热液和构造分异作用为主；而转换带构造坳陷区一侧则在变质热液和构造分异作用基础上叠加较强的岩浆热液作用；在构造坳陷区边缘附近的岩浆活动强烈地区，则以岩浆热液成矿作用为主。

THE RELATION OF THE FEATURE OF THE DEEP STRUCTURE TO GOLD MINERALIZATIONIN THE UPWANPING REGION OF DAYAO MOUNTAIN GUANGXI

The E-W and S-N and N-E-extending deep structure deprssions and uplifts andthe transition zones of depression and uplift in the Dayao mountain upwarpring region of eastern Guangxi, are linear-elongated. The deep st ructure depression controls the range of graniteand the transition zone of depression and uplift is the important seat of the fault activity andgranite activity and gold mineralization. The divided E-Wand N-W extending transition zoneand SE deep structure depression control the gold mineralization zone and An-richmineralization districts in the upwarping region.There is obvious distinction in goldmineralization and the feature on the condition of different deep backgrounds.The mainmineralization in the transition zone by deep structure uplift is the metallization bymetamorphic secretion and structure separate and telescoped that by granite hydrothermalmineralization in the transition zone by deep structure depression. The main mineralization isthe granite hydrothemal mineralization within the intensive magmation region in the contiguousdistrict on the verge of the deep structure depression.