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鄂西渝东区海相地层经历了多期构造运动 ,受到过多种应力场作用 ,因应力条件、介质条件和边界条件差异 ,形成了现今比较复杂的构造面貌。纵向上 ,因上、下构造变形层抗应变能力的不同 ,在挤压应力作用下发生差异形变 ,产生纵向变异 ;横向上 ,形成了隆凹相间的区域构造面貌。本文根据鄂西渝东区区域和局部构造特征、构造型式、展布规律 ,论述了古、今构造对本区油气运移和聚集的控制作用 ,指出本区石炭系勘探的有利区带及目标。
The marine strata in western Hubei and eastern Chongqing experienced multiple tectonic movements and suffered from various stress fields. Due to the differences in stress conditions, medium conditions and boundary conditions, the present-day complex tectonics have been formed. Longitudinally, due to the difference of the anti-strain ability of the deformed layers in the upper and lower tectonic formations, differential deformation occurs under the compressive stress, resulting in longitudinal variation. In the horizontal direction, the regional tectonic features of the long and concave phases are formed. Based on the regional and local tectonic features, tectonic types and distribution laws in the eastern and western parts of western Hubei Province, this paper discusses the control of hydrocarbon migration and accumulation by the Paleo-Modern tectonics in this area and points out the favorable zones and targets for the exploration of Carboniferous in this area.