济阳坳陷桩海地区前第三系潜山构造样式

济阳坳陷桩海地区前第三系经历了多期构造变动，形成了含油气性差别较大的多种类型潜山。钻井和地震资料分析表明，该区主要发育印支、燕山和喜马拉雅3期断裂，并形成了北西西向、北东向和近东西向3种断裂组合。应用平衡剖面技术恢复了该区构造演化史；依据各期构造的叠合关系划分出逆掩推覆、挤压褶皱、逆掩叠加、拆离滑脱及走滑断裂5类构造样式，并明确了其展布方向。由于挤压褶皱构造带、拆离滑脱构造带及走滑断裂构造带所处的构造位置、形成时期及相关成藏条件均较有利，因此其含油气性较好。

Structural style of pre - Tertiary buried hills in Zhuanghai region of Jiyang Depression

Zhuanghai region in Jiyang Depression experienced multiphase tectonic movements in pre-Tertiary and many kinds of buried hills were formed with different oil-gas-bearing probabilities. Drilling and seismic data show that fractures were developed mainly in three periods, Indochina, Yanshan and Himalayan ep-oches, and there exist three fracture combinations in NWW, NE and EW directions. Using equilibrium profile technique, the author reconstructed the tectonic evolution history of this region.Five types of structural styles,i, e. overthrust nappe,compressive fold, overriding superposition, decoupling slip and strike-slip fault are identified and their orientations are determined according to the structural superimposed relationship in each period. Because of their favorable structural location, formation time and condition,the structural belts of compressive fold,decoupling slip and strike-slip fault have great hydrocarbon bearing probability.