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通过成因地层对比、构造形态和盆地演化过程分析，在黔中南至桂西鉴别出一条ＮＮＥ向延续的陆内软碰撞带。它是在伸展裂谷海盆地（再生陆间海）聚合封闭过程中，由活动大陆边缘向被动大陆边缘缓慢仰冲而形成的。与其同期形成的还有晚三叠世黔西滇东前陆盆地，萍乐残留弧后盆地和十万大山及龙岩后陆盆地。软碰撞带的出现，不仅掩盖了晚二叠世至中三叠世陆间海的深海沉积和洋壳基底，而且造成碰撞带两侧的地层、构造和古地理环境的不连续，同时对盆地矿产的分布和再富集也有直接影响。
Based on the analysis of genetic stratigraphic correlation, tectonic morphology and basin evolution, a NNE-trending soft intracontinental collision zone was identified in the middle and southern Guizhou Provinces. It is formed in the extended Rift Basin (reclamation of the inter-continental sea) polymerization sealing process, from the active continent edge to the passive continental margin slowly Yangshu formed. Also formed over the same period are the Late Triassic East Yunnan Qianxi foreland basin, Ping Le residual arc back basins and Shimenshan and Longyan backwater basin. The emergence of soft collision zone not only masks the deep-sea sediments and oceanic basement of the Late Permian to Middle Triassic continental seafloor, but also causes the discontinuity of the strata and structures and paleogeographic environments on both sides of the collision zone. At the same time, The distribution and re-enrichment also have a direct impact.