摘要
笔者在对黔北及邻区上奥陶统涧草沟组20余条剖面进行观察的基础上,系统地收集了涧草沟组地层、古生物、岩石、沉积构造等方面的资料,较为详细地研究了该组的岩石特点、化学成分特点、古生物及其组合特点,运用现代沉积学的理论,并辅以电子计算机等手段,对涧草沟组的沉积环境进行了分析。
According to the researches on Jiancaogou formation of Upper Ordovician series in northern Guizhou and its adjacent areas, the sedimentary characteristics of Jiancaogou formation of Upper Ordovician series in this area are as follows: Ⅰ. The rock associations are monotonous: Jiancaogou formation is mainly warty marlite bearing bioclastic.
Ⅱ. The characteristics of biological fauna are clear, with large numbers of Trilobites (Nankinolithus) and Folimena assemblages appearing in Jiancaogou formation.
Therefore, the writer has used the result gained in studying sedimentary characteristics of Jiancaogou formation and the result computed by electronic computer to make an analysis of sedimentary environment of this formation, considering the sedimentary environment of Jiancaogou formation of Upper Ordovician series in this area as a carbonated platform sedimentary environment, with lower zone tided. There are some platform hollows in Jiancaogou and Banqiao of Zunyi, Honghuayuan of Tongzi and Guanyinoqiao of Qijiang, etc.
出处
《贵州地质》
1989年第2期133-139,122,共8页
Guizhou Geology
