依兰—伊通地堑方正断陷孢粉组合及其地层层序

SPOROPOLLEN ASSEMBLAGE AND ITS STRATIGRAPHIC SEQUENCE OF THE FANGZHENG RIFT IN THE YILAN—YITONG RIFT VALLEY

根据大量钻井岩心中的孢粉资料 ,建立了方正断陷内白垩系至新近系 5个孢粉组合 ,讨论了其地质时代。并结合岩性资料 ,首次将乌云组和富锦组引入方正断陷 ,提出了方正断陷不仅发育有古近纪新安村组和达连河组 ,而且还发育有晚白垩世方正组、古近纪乌云组、宝泉岭组以及新近纪富锦组 。

Based on a great deal of sporopollen material from the core in the Fangzheng Rift, five sporopollen assemblages have been established from Cretaceous to Neogene, and their geological era discussed in this paper. Combined with lithologic material, Wuyun Formation and Fujin Formation are introduced to the Fangzheng Rift for the first time, and the authors consider that not only Xinancun Formation, Dalianhe Formation of the Paleogene, but also Fangzheng Formation of the Late Cretaceous, Wuyun Formation and Baoquanling Formation of the Paleogene, Fujin Formation of the Neogene are developed in the Fangzheng Rift.