According to the principle of sequence stratigraphy, the Lower Cretaceous could be divided into five unconformities (T5,T4, T3, T1-1, T03) and three sequences.

• 根据层序地层学原理，松辽盆地下白垩统可划分出五个不整合（T5、T4、T3、T1－1、T03）以及三个层序。