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渤海湾盆地东营运动是一个范围 广泛、强度较大的区域性构造运动, 处在由盆地的裂陷阶段向坳陷阶段 过渡时期。形成了众多小规 模次级断层、全区整体抬升并遭受 剥蚀,局部发育反转构造。该运动以 及渤海湾盆地在伸展裂陷阶段的多 次构造运动说明渤海湾盆 地呈现出幕式沉降过程,东营运动 则具有更重要的动力学意义。岩石 圈快速拉伸、上地幔上涌和温度升高 以及壳下岩石圈的弹性回 返可以很好地解释东营运动的形成 过程以及渤海湾盆地演化阶段的转 折。考虑地壳均衡效 应,可以对传统的地层剥蚀量计算方法进 一步修正。渤海湾盆地东营运动的 形成和发展有利于盆地内油气的生 成和运移。
The Dongying movement in the Bohai Bay basin is a regional tectonic movement with a wide range and intensity. It is in the period of transition from the rifting stage to the depression stage in the basin. A large number of small-scale secondary faults have been formed. The whole area is lifted and eroded, and local development is reversed. This movement and the multiple tectonic movements during the extension and rifting phases of the Bohai Bay Basin show that there is a curtain-type subsidence process in the Bohai Bay basin and the Dongying movement has more important dynamic significance. Rapid lithospheric stretching, upper mantle upwelling and temperature increase and the elastic return of the lithosphere under the shell can well explain the formation of Dongying movement and the turning point of the evolutionary stage of the Bohai Bay Basin. Considering the crustal equilibrium effect, we can further amend the conventional calculation method of denudation of formation. The formation and development of Dongying movement in the Bohai Bay basin are favorable to the formation and migration of oil and gas in the basin.