The chorostratigraphic framework model of Biyang fault depression has clearly reflected the distribution character of terrigenous sequence and its configuration of depositional system in time and space, and objectively revealed basin formation and evolution history, and sediment filling history of the fault depressed lacustrine basin.

Controlled by the paleostructural features,sources,paleoclimates,and water bodies,(fan) deltaic and salt lake depositional systems,as well as four patterns of salt-lake sedimentary fill(fault slope zones,slope break zones,salt lake density flows and southern ramp gypsic salt).

Taking Bayantala transfer zone in Hailaer Basin as an example,this paper analyzes sedimentary filling features in structural transfer zone through paleotopography restore and summarizes its hydrocarbon distribution rules.

Fracturing dominated structural evolution and sedimentary filling in these subsags.

Meanwhile,characteristics of tectonic activity in different periodic rifting and their controlling on sedimentary filling were studied.

According to a great amount of drilling and seismic data and based on tectonic evolutionary analysis, sedimentary facies analysis and depositional filling type analysis, the depositional filling pattern of this type of basins is established in this paper.