辽河外围西部断陷沉积盆地群油气成藏条件及盆地力学探讨

辽河外围西部发育了一系列晚中生代陆相沉积盆地。它们经历了前裂谷盆地期、同裂谷盆地期、后裂谷盆地期，以及盆地形成后的改造期四个阶段。在裂谷体制作用下，它们形成了相似的断陷构造样式。但基底结构的基异产生了盆地沉积建造与后裂谷阶段的重大差异。盆地盖层的发育主要决定于后者，因此在裂谷型盆地的油气成藏条件及其演化发带与成块特征。

A study on the oil and gas accumulation conditionof the outer - ring of the liaohe, western faultsedimentary basins and its basin mechanics

The western part of outer-ring of Liaohe developed a series of the late Mesozoic continental deposit basins, they underwent pre-rift basin period, syn-rift basin period, post-rift basin period and reworking period of basin formed, with the rift systematization, the similar fault structural types were formed, but they had a large difference between sedimentary formation and post fift period as the difference of basement structures, the development of the basin cover mainly determines the later, so, the oil and gas accumulation condition in the rift basin and its evolution show the zoning and massive features.