The analysis of seismic data comes to the conclusion that the shortening of formations in a compressionalbasin mainly results from faulting and folding.
由地震资料分析认为，造成压性盆地地层缩短的原因主要有两方面：①断裂作用；②褶皱作用。
2
The sedimentary process of compressionalbasin is the peak period of hydrocarbon generation of middle and shallow formation, being favorable for the hydrocarbon preservation.
压陷盆地的沉积过程为中浅层生烃高峰期也有利于油气的保存；
3
Dayangshu Basin experienced multistage deformations, which is characterized mainly by extensional structures, and was superimposed by compressional structures and positive inversion structures.