【摘要】 通过对长江坳陷中的反转构造研究,认为在长江坳陷中与反转构造相关的背斜构造、推覆构造、地垒构造对油气的存储具有很重要的意义。长江坳陷的构造演化阶段划分为五期:晚白垩世古新世断陷阶段;古新世末期始新世早期挤压反转阶段;始新世坳陷阶段;始新世末期的构造抬升阶段;中新世后的区域沉降阶段。用平衡剖面的方法验证了所解释的地震剖面的合理性,模拟了剖面中重点构造的形成与演化过程,定量地描述了地层拉伸、地层缩短量及褶皱隆升量,为研究有利圈闭提供了重要参考数据。更多还原

【Abstract】 In terms of study on inversion tectonics of Changjiang depression, East China sea basin, it is suggested in this paper that the anticlines, nappes and lifted blocks related to inversion tectonics in Changjiang depression are of important significance for oil and gas trap formation. Tectonic evolution in the Changjiang depression can be subdivided into five stages: 1. fault depression in Late Cretaceous - Paleocene; 2. structural reversion in Late Paleocene - Early Eocene; 3. depression in Eocene; 4. structural uplift in Late Eocene; 5. regional sedimentation after Miocene. The technique of balanced cross section is used to identify the reasonability of explanation of seismic sections, to model the formation and evolution of key structures in sections, and to describe the crust extension and shortening and fold uplift quantitatively, which can provide important information for studying favorable traps.更多还原