KINEMATICS ANALYSIS OF KENDONG UPLIFT AND ADJACENT REGION, BOHAI BAY BASIN

The Kendong Region is a new hydrocarbon exploration target in the central and southern Bohai Bay Basin. In order to study the tectonic characteristics and their bearing on hydrocarbon accumulation in the region for favorable traps, the types of block movement, especially the horizontal extensional movement and the tilting movement are carefully studied. Based on integrated geological and geophysical studies, the authors reached following conclusions. (1) The block movement in the Kendong Uplift and adjacent region is dominated by horizontal and extensional movement and tilting or rotating movement; (2) Through the study of extensional coefficient, fault growth index, fault throw and balanced cross section, it is revealed that the tectonic revolution in the Kendong Uplift and adjacent region is characterized by a strong movement in early stage and a weak movement in later stage; (3)The tilting movement in the region was controlled by the strike-slip and extensional movement of the Tanlu Fault, and had experienced four stages:single faulting in Mz-Ek, multiple single faulting in Es4, bilateral faulting in Es3-Es1, and weak extensional movement or dislocated down-warping in Neogene.