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中亚与中国西北地区的多数中—新生代沉积盆地都表现为山前（指造山带或活动隆起带前缘）地带先行沉降，然后逐步向外扩展；早—中侏罗世沉降幅度最大，普遍形成未补偿的深湖—半深湖沉积，沉积范围遍及造山带，构成一准平原化的泛盆地沉积时期。盆地早期的构造样式均为半地堑式箕状凹陷，晚期均发生方式不同的的构造反转，形成全反转的逆冲推覆和半反转的正或逆反转构造。这些特征及区域构造背景共同说明，这一地区中—新生代盆地初始沉降不是起因于板块俯冲引发的挠曲作用，而是因造山带或活动隆起带前缘地带克拉通地块的重力陷落所引起，这样形成的盆地可称为陷落型前陆盆地。
Most of the Meso-Cenozoic sedimentary basins in Central Asia and Northwest China are characterized by pre-settlement of the piedmont (foreland orogen), and then gradually extended outward. Early-Middle Jurassic sedimentation was the largest, Undistorted deep lake-semi-deep lacustrine deposits are generally formed, covering a range of orogenic belts, forming a quasi-plastification basin deposition period. The early tectonic patterns of the basin are all half-graben-type scabbard-like depressions. Different types of tectonic inversion occur in the late stage, forming all-inversion thrust nappe and half-inversion normal or inverse inversion structures. These characteristics together with the regional tectonic setting suggest that the initial subsidence of the Meso-Cenozoic basins in this area did not result from the deflection caused by plate subduction but due to the gravity collapse of the craton belt in the orogenic belt The resulting basin can be called a subsidence foreland basin.