Abstract: According to bore holes and exposures, the authors studied the structure sequences of the Jixi basin in Eastern Heilongjiang Province. With classification of tectonic sequence, the authors discussed the dynamics evolution of Jixi basin, suggesting that the Jixi basin was formed by pull apart of lefthanded strikeslip related to the Dunmi rift zone in the Cretaceous. Longitudinal expression include two tectonic evolution periods: blockfaulting stage in earlymiddle stage of the Early Cretaceous expressed, which was controlled by the growth of coalbearing sequence in Jixi Group; downwarping period in late stage of the Early Cretaceousearly stage of Late Cretaceous, which was controlled by the growth of red sequence in Huashan Group. The sequence classification and dynamic analysis of this basin provide an important evidence to the stratigraphic correlation,tectonic analysis and minerogenesis.

Key words: Jixi basin, tectonic sequence, dynamics, Eastern Heilongjiang Province