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川东地区沉积盖层中，顺层滑脱构造十分发育，经地震剖面和露头地质研究，可划分为４套层滑系统。其中下寒武统、上奥陶下志留统、上二叠统和中下三叠统等是这些层滑系统的４套主要的滑脱层。滑脱层主要由泥页岩、膏盐岩或煤层构成，在岩石力学性质上，具有抗压强度低、弹性模量小、内磨擦角小以及泊松比大等特点；在物性参数上，其密度、孔隙度、磁化率、视电阻率以及声波速度都较低。露头中的动力变质、塑性变形和平衡剖面的正演计算恢复均证实了层滑系统的存在。结合油气地质研究发现：滑脱层系大多是极具潜力的烃源层和良好的区域盖层。另外，滑脱层系还构成该区上下两个封存箱的区域平板状封隔层。
Among the sedimentary caprocks in eastern Sichuan, the strata of strata are well developed. Based on the study of seismic profiles and outcrops, it can be divided into four sets of stratified slip systems. Among them, the Lower Cambrian, Upper Ordovician Silurian, Upper Permian and Middle-Lower Triassic are the four main slip layers of these slip systems. The slip-off layer is mainly composed of shale, gypsum salt rock or coal seam. It has the characteristics of low compressive strength, small elastic modulus, small internal friction angle and large Poisson’s ratio on the mechanical properties of rocks. In physical parameters, Density, porosity, magnetic susceptibility, apparent resistivity, and acoustic velocity are low. Outburst dynamic deterioration, plastic deformation and balanced section of the forward calculation and recovery are confirmed by the existence of the layer slip system. Based on the study of petroleum geology, it is found that most of the skidding strata are highly potential hydrocarbon source rocks and good regional cap rocks. In addition, the slippage layer also forms a planar plate-like confinement of the two upper and lower containment compartments.