前人对高寨田组的划分对比和时代归属的方案较多,争议颇大。笔者通过对贵定地区的1∶5万区调,认为该区的高寨田组可划分为6个岩性段,其总体可与桐梓—遵义、印江—石阡两地区的岩石地层进行对比,从而使黔中—黔北的岩石地层单位统一起来。关于黔南志留系底部的一套砾岩层,前人一般认为属海滩沉积,并划分出不同的沉积类型,笔者根据砾石的分布和沉积特征,以及上覆地层的沉积关系,认为属陆相冲积扇体系更为恰当。 There are many controversies over the division of the Gaozhatian group and the programs that belong to the era. Through the 1: 50000 regional adjustment in Guiding District, the authors believe that the Gaozhaidian Formation in this area can be divided into six lithologic sections, which can be generally carried out with the rock formations of Tongzi-Zunyi and Yinjiang-Shiqian areas Contrast, so that the Guizhou-Guizhou north of rock formation units together. As to a set of conglomerate layers at the bottom of the Qiannan Silurian, it is generally considered as a beach sediment and divided into different sedimentary types. According to the gravel distribution and sedimentary characteristics and the sedimentary relationship of the overlying strata, Alluvial fan system is more appropriate.