Abstract: The Erlian basin is a large Meso-Cenozoic sedimentary basin in northeastern China, with more than 40 depressions of varying sizes. Their genesis were closely related to the fossil steep blocks produced by regional faulting. These blocks not only controlled the different lithofacies zones, the centers of subsidence and the source rocks, but also formed, during the many stages of tectonism, many different structural zones and types of traps, keeping the distribution of oil and gas accumulation under their direct control. This may serve as a clue to the discovery of a new oil region for setting up a new oil base.

摘要： 二连盆地是我国东北部巨大的中、新生界沉积盆地之一,共有40多个大、小不等的沉降凹陷。分析其成因与区域断裂活动所形成的古陡坎有密切的关系。古陡坎不仅控制着不同岩相带、沉降中心和生油岩,而且古陡坎在多期构造活动中,形成不同性质的构造带和多种圈闭类型。这种地质构造发育特征直接控制了油、气富集带的分布。因此,认识这种规律就可能发现新油区,创建新的石油基地。