【摘要】 依据大量区域地质考察结果、对 5 4条地震反射剖面的新解释和对 3 6口钻孔资料的深入分析 ,认为辽河坳陷大民屯凹陷安福屯潜山带裂缝的形成和演化受 2期 3个阶段构造应力场的控制 ,即 :燕山期 (距今约 67～ 2 0 0Ma)板块构造运动引起的挤压应力场和喜马拉雅构造期的拉张应力场 (距今约 3 6～ 66Ma)、右行走滑构造应力场 (距今约 2 4～ 3 5Ma)。裂谷期后郯庐断裂带的右行走滑活动导致早期裂缝被改造和生成新的裂缝。安福屯潜山带可以形成裂缝性油气藏。图 4参 17更多还原

【Abstract】 The fractures formation and evolution on Anfutun burial hill zone, Damintun Sag were controlled by three stages, two phases of structural stresses field, including compressive stress field was caused by plate movement (about 67 200 Ma before) during Yanshan period and extensional stresses field produced from upwelling of the mantle (about 36 66 Ma before) and dextral strike slip stresses field induced by dextral strike slip movement (about 24 35 Ma before)during Xishan Period. Extensional and dextral strike slip stresses field during Xishan Period lead to reactivate of the older fractures and produce new fractures. Fractured oil and gas field should be explored on the Anfutun burial hill zone, Damintun Sag.更多还原