东北地区晚白垩世—第三纪孢粉组合序列

Upper Cretaceous and Tertiary palyno-assemblage sequences in Northeast China

依据孢粉组合特征,东北地区晚白垩世—第三纪共有20个组合:晚白垩世5个组合,达宁期—古新世3个组合,始新世4个组合,渐新世3个组合,新第三纪分南、北两个部分计5个组合。

About twenty assemblage zones may be recognized: 5 belonging to the Upper Cretaceous, 3 to the Paleocene, 4 to the Eocene, 3 to the Oligocene and 5 to the Late Tertiary.The boundary between Cretaceous and Tertiary is discussed in the present paper based on palyno-logy.It is better to put the boundary between the lower and upper members of the Furao Formation than between the Furao anil Wuyin Formations.