Abstract: Kongdian high is an important hydrocarbon-bearing structure in Huanghua basin.Thispaper discusses the formation and evolution of Kongdian high.The geometry and kinematicsof the structures included the high and its related sags and faults are studied in detail.As aresult,Cangdong fault bounded westly on Huanghua basin is a large-scale ramp-flat listricnormal fault,Kongdian high is a large-scale "roll-over anticline" on the hanging wall of Cangdong fault,Changzhuang sag located on the east of Kongdian high is a "ran1p syncline" complicated by fauIts on the hanging wall of Cangdong fault.The mechanism of anticline-type Kongdian high is bend folding rather than buckle folded.The evolution of Kongdianhigh respond to the kinematics process of Cangdong faulting froma plane normal fault toramp-flat listric normal fault.

Key words: Huanghua depression, Kongdian arch, normal fault, tectonic evolution, tectonic interpretation

摘要： 孔店凸起是黄骅盆地中重要的油气聚集构造(带)之一.根据构造平衡原理对孔店凸起及其两侧断陷进行了较详细的构造几何学、运动学解析,认为这一区段的盆地西缘主边界断层─-沧东断层是一条坡坪式正断层,孔店凸起是该坡坪式正断层上盘的一大型“滚动背斜”.这种滚动背斜的成因属于重力引起的“横弯褶皱作用”机制,而不是侧向挤压引起的“纵弯褶皱作用”机制.孔店凸起的演化过程与沧东断层由平面式正断层演变成为铲式-坡坪式正断层的过程有密切关系,是盆地中主干伸展断层运动学特征的反映.

关键词: 黄骅坳陷, 孔店凸起, 正断层, 构造演化, 构造解释