摘要
根据泥盆系研究的新成果,普安地区下、中泥盆统的界线在罐子窑组与火烘组之间。独山地区的龙洞水组应属下泥盆统,下、中泥盆统界线大致在龙洞水组与大河口组之间。以Stringocephalus的首次出现作为中泥盆统内部界线,大致相当于艾菲尔阶与吉维特阶的界线,它大致位于独山组(屯土)上段与鸡泡段之间。根据古孢子研究成果,凯里翁项地区的野山群下部属于下泥盆统,证实了乐森(王寻)教授(1957)对“野山石英砂岩”时代的推测是正确的。
According to the new data of the Devonian stratigraphy in Guizhou, the boundary of the Lower and Middle Devonian is located probably between the Guanziyao and Huo-hong Formations in Puan region. The Longdongshui Formation maybe belong to the Lower Devonian, and the boundary of the Lower and Middle Devonian is proximally between the Longdongshui Formation and Dahekou Formation in Dushan region. The first appearance of the Stringocephalus is considered as internal boundary of the Middle Devonian which is corresponded roughly to the boundary of the Eifelian and Givetian Stages in Europe. This boundary is between the Tengshang and Jipao Members of the Dushan Formation. Based on the palaeospore data, the lower part of the Yeshan Group (or Yeshan Sandstone) as properly named by Professor Yue Senxin (1957) belongs to the Lower Devonian in Kaili region.
出处
《贵州地质》
1992年第4期330-339,共10页
Guizhou Geology
