鲁西地区早二叠世早、中期孢粉组合特征

为解决鲁西地区二叠系内部划分和煤层对比问题，笔者先后对鲁西诸煤田二叠系进行了大量的孢粉分析工作，采集处理300多块样品，经系统研究，建立了本区二叠纪的4个孢粉组合，本文重点讨论早二叠世早、中期的两个孢粉组合，自下而上为：Thymospora thiessenii-Laevigatosporites vulgaris-Densosprites组合；Gulisporites cochlearius-Laevigatosposporites组合。根据所建立的各孢粉组合特征并与华北各地二叠纪孢粉组合广泛对比，进一步阐述了各孢粉组合的地质时代。

Permian Spore-pollen Assemblage of Early-and Middle-Period of Early Permian in Western Shandong

In order to correctly classify the strata and correlate the coal seams in Permian, the authors carry through the work of Spore pollen analysis in Permian successively in the coalfields of Western Shandong (more than 300 samples have been collected and analyzed). Based on the systematic investigation, four spore pollen assemblages covering the early period of Early Permian to early period of Late Permian in the study area have been established. This paper put the stress on two assemblages the Early and Middle period of the Early Permian. They are: (1) Thymospora thiessenii-Laevigatosporites vulgaris-Densosporites (2) Gulisporites cochlearius-Laevigatosporites According to the characteristics of spore pollen assembles and the extensive correlation with that in other districts of North China, the geologic time of the spore pollen assemblages are determined, which has great significance to the further detailed classification of Permian strata.