针对狭长的双断式断陷盆地伊通盆地地层对比困难的问题，该文在区域构造分析、地层对比、沉积特征分析的基础上，研究了二级、三级层序界面的特征，建立了层序地层格架。通过研究认为：Tf 界面虽然不具有区域性不整合面的特征，但是利用多种方法综合分析，最终认定Tf 界面属于二级层序界面；通过对Tc 和Td 不整合面级次的比较，最终确定了永一段地层的归属问题。利用录井、测井、地震等资料，采用测井－地震相结合，总结了各层序地层的特征，对伊通盆地的地层进行了系统划分与对比，建立了各个标志层的划分与对比标准。

On account of the difficult questions of a strip of double-fault-style rift basin-Yitong Basin stratigraphic correlation, this article, studies the features of the secondary and tertiary sequence boundary and sets up a sequence stratigraphic framework on the basis of the analysis of the regional structure, stratigraphy, sediment characteristics.Authors believe that Tf surface ultimately belongs to the secondary sequence surface through a comprehensive analysis of a number of ways, however, it is not the regional unconformity; authors have finally solved the attribution problem of the Y1 formation by the comparison of Tc, Td unconformity level .Using of logging, drilling, seismic and other data, combining with seismic and wells, suming up the characteristics of each sequence stratigraphy, systematically dividing and comparing the formation ofYitongBasin, the standards of division and correlation of various layer are set up.