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利用孢粉图示、Q型系统聚类分析等方法,对辽中凹陷JZ16-4-1,JZ21-1-1,JZ25-1-3,JZ31-2E-1等钻井的206块样品进行孢粉分析,结果显示:辽中坳陷古近系沙三段到东营组一段划分为6个孢粉组合带;结合渤海湾盆地其它凹陷的古近系孢粉地层研究发现辽中凹陷东营组孢粉组合带与南堡凹陷和冀中拗陷分带结果较为相似,与黄河口凹陷和东濮凹陷有较大差异;孢粉组合带特征表明,辽中凹陷古近系气候以温暖湿润为主,略有波动,是形成孢粉分带的主要原因。
Using sporo-pollen mapping and Q-type cluster analysis, 206 samples of JZ16-4-1, JZ21-1-1, JZ25-1-3 and JZ31-2E-1 drilled in the central Liaoning depression The results show that the first member of Shahejie Formation and Dongying Formation of Paleogene in Liaozhong Depression is divided into six sporopollen assemblages. According to the Paleogene pollen stratigraphy of other sag in Bohai Bay Basin, The results of the Fenghuang composite belt are similar to those of the Nanpu depression and the Jizhong depression, and are quite different from those of the Huanghekou depression and Dongpu depression. The characteristics of the sporopollen assemblages indicate that the Paleogene climate of the Liaozhong Sag is dominated by warm and humid , A slight fluctuation, is the main reason for the formation of pollen zonation.