摘要
本文将紫云猫场P—T之交厚约20m的白云岩命名为猫场组,以区别下伏生物碎屑灰岩的长兴组及上覆泥灰岩—页岩的罗楼组。并按猫场组所发现牙形刺动物群特征,将其时代从过去的晚二叠世更改为早三叠世。描述了一个牙形刺新种。
In this article, the dolomite rocks of about 20 meters thick at P-T boundary in Maochang, Ziyun, are named the Maochang Formation so as to differ from the Changxin Formation of biolithite underlying it and the Luolou Formation of marlite shale overlying it. Moreover,according to the features of conodont fauna discovered in the Maochang Formatiom, the author suggests that its age should be changed from Late Permian into Early Triassic.
出处
《贵州地质》
1992年第1期17-25,共9页
Guizhou Geology
