【摘要】 滇黔桂"金三角"地区，自古生代以来，存在着5个角度不整合和平行不整合面。角度不整合是板内褶皱造山变形，平行不整合是板内造陆变形的重要记录。它们是一种容易失稳的界面。在强烈构造变动背景中，其后期转化的重要型式是形成脆性拆离断层带（中浅构造层次）、韧性剪切带（中深构造层次）及其它们之间的韧-脆性转换带。这些后期转化的演化对此区金矿形成有着重要的影响。表现在：①强化流体-岩石间相互作用；②促进金成矿流体的再次运移和聚集，③为金成矿提供定位场所。更多还原

【Abstract】 5 angular and parallel unconformities have occurred in strata in the contiguous area of Yunnan－ Guizhou－ Guangxi provinces since Palaeozoic era.Angular unconformity belongs to an intraplate folded－ orogenic deformation.Parallel unconformity is the record of intraplate epeirogenic deformation.Both are an unstable contact and always transfer into brittle detachment fault(when located at mid－ superstructure level),ductile shear fault(while located at mid－ infrastructure level) during later tectonic movement.The formation of gold deposits in the area are affected highly by the later transformation.These affections find expression in improving interaction of fluid－ rock,promoting the re－ migration and re－ concentration of gold－ bearing fluid and providing the depositional location for gold metallogensis.更多还原