贵州的晚先寒武纪地层分布广泛,发育良好,分属扬子和江南两个地层区(图1),自下而上包括:梵净山群(或四堡群)、“板溪群”(或下江群)和震旦系,其地层序列及基本特征如表1.贵州晚先寒武纪的地壳演化,可以1,000百万年和800百万年两个重要的构造变革期为界,分为三个构造演化阶段(或时期):1,400—1,000百万年的梵净(四堡)阶段,1,000—800百万年的 Late Cambrian strata in Guizhou are widely distributed and well-developed, belonging to the two stratigraphic zones of the Yangtze and Jiangnan (Figure 1). The bottom-up includes the Fanjingshan Group (or Siubao Group), the “Banxi Group” (Or Xiajiang Group) and Sinian, the stratigraphic sequences and basic features are shown in Table 1. The Late Cambrian evolution in Guizhou Province can be interpreted as two important tectonic transformation periods of 1,000 million years and 800 million years , Divided into three tectonic evolution stages (or periods): 1,400-1,000 million years of the Fungjing (Fort Four) stage, 1,000-800 million years