惠民凹陷临南洼陷滑塌浊积岩分布规律及其控制因素

从临南洼陷的构造背景出发，依据浊积岩的分布特征，首次提出了滑塌浊积岩的形成和发育与洼陷带的开阔程度，沉积古地形特征，水动力条件，三角洲的规模，三角洲的高建设性，三角洲的前缘位置变化以及盆地演化阶段紧密相关，在此基础上，认为临商断裂下降盘的营子街及夏103井附近可能有浊积扇存在，在夏口断裂至营子街断裂系的宽缓斜坡上及江家店鼻状构造至玉皇庙断层附近，应有小型滑塌浊积扇分布。指出双丰三角洲的摆动性强，当构造等高线与三角洲的进积方向产生一定的交角时，很容易产生岩性上倾尖灭。

Distribution rule and its controlling factors of slump turbidite of Linnan subsag in Huimin sag

Based on the structural background of Linnan subsag and distribution characteris of tics the turbidite, it is firstly put forward that the formation and development of the slump type turbidite is elosely related to the wide degree of the subsag belt, sedimentary palaeotopography features, hydrodynamic condition, delta scale, delta development degree of succession, delta front change and basin evolution stage. It is considered that turbidity fans may exist near Yingzixiang of downthrown block of Linshang fracture and well Xia 103, and small?scale slump turbidity fans should be distributed on the wide gentle slope from Xiakou fracture to Yingzijie fracture system and nose?like structure of Jiangjiadian to nearby Yuhuangmiao fault. It is pointed out that Shuangfeng delta has strong oscillating property, so lithologic updip pinchout may be easily produced when a certain angle exists between the subsurface contour and progadation direction of the delta.