The scale of the highstand delta front is smaller than the lowstand delta front, but the incise valley and the river deposition developed in the time of the lowstand.

• 研究发现：在断裂陡坡带以下高位扇三角洲前缘没有低位扇三角洲前缘发育的规模大，且低位时期下切谷和河流沉积较发育；