The principle of sequence stratigraphy is used in discussing a wide scope of topics, such as basin evolution, facies structure, nature of fossil record, and distribution of organic facies, etc.

Then, beginning with the microfacies, signs of sediment facies, including rock's colour, sediment structure, granularity distribution, fossil and so on, are studied.

In terms of lithology, fossil records and sedimentary facies, the Cretaceous in the Bazhou depression, Minhe basin is subdivided into Datonghe, Hekou and Minhe Formation.