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豫东二叠系发育良好,分布普遍。笔者据钻孔岩芯及化石资料将其作如下划分:下统—山西组及下石盒子组、上统—上石盒子组及石千峰组。石千峰组又分为三段:平顶山砂岩段、瓣鳃泥灰岩段及石膏钙核段。
The Permian in eastern Henan Province is well developed and widespread. The author according to drilling core and fossil data will be divided as follows: under - Shanxi group and under the stone box group, the system - on the stone box group and Shiqianfeng group. Shiqianfeng group is divided into three sections: Pingdingshan sandstone section, flap gill limestone section and gypsum calcium core section.