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本文对山东平邑盆地卞桥镇国泰庄西ZK101井卞桥组二段的21块井壁岩芯样品进行分析,在其中5块样品中发现了大量保存较好的孢粉和一些淡水藻类化石,总计60属2亚属63种及部分未定种。据此建立了一个孢粉组合,即Pterisisporites-Ephedripites-Ulmaceae组合。该组合以凤尾蕨科和麻黄科花粉占优势,榆科有一定含量为其主要特征,并通过对一些重要分子的地质时代分布及与邻区相关孢粉组合进行对比,确定了其时代为古新世,同时讨论了该孢粉植物群所反映的古气候特点。
In this paper, 21 core samples of wellbore wall in the second section of Bianqiao Formation of Cathay, Zhuangxi West, Bianqiao Town, Pingyi Basin, Shandong Province were analyzed. A large number of well-preserved sporopollen and some freshwater algae fossils were found in 5 samples, A total of 60 genus 2 subgenus 63 species and some undetermined species. A sporopollen assemblage, Pterisisporites-Ephedripites-Ulmaceae, was thus established. The combination of the Pteris fern and ephedra-based pollen dominant, Ulmaceae certain content as its main features, and by some important molecular geological age distribution and adjacent sporopollen assemblages compared to determine the time for the Paleocene, at the same time discussed the palynological flora reflects the characteristics of paleoclimate.