【摘要】 渤海盆地中的走滑构造在油气勘探中具有重要意义,对认识郯庐断裂新生代的活动及地球动力学也有重要意义。根据地震资料解释和构造图编制,研究了渤海盆地东部走滑断裂带分布及类型,讨论了其形成动力学条件和油气地质意义。渤海盆地走滑断裂带主要发育雁列正断层系、同向剪切断裂系,也见反向剪切断裂系和次级同向剪切断裂系。剪切系断裂组合反映右旋扭动,右旋扭动时间为新近纪晚期—第四纪。走滑断裂带的形成是郯庐断裂带活动的反映,是印度板块与欧亚板块碰撞远程效应的结果。走滑构造带形成了重要的油气圈闭,是未来油气勘探的有利区。更多还原

【Abstract】 Strike-slip structures in Bohai Basin are of significance in both petroleum exploration and the understanding of the Cenozoic Tanlu Fault movement and its geodynamics.Based on the interpretation of seismic data and the compilation of structural maps,the present paper studied the type and distribution of strike-slip fault systems in Bohai Basin,and discussed their formation dynamics and significance in petroleum geology.Strike-slip fault belts in Bohai Basin are dominated by en echelon normal-fault systems and synthetic shear-fault systems,with some antithetic shear-fault systems and secondary synthetic shear-fault systems occasionally.The assemblage of shear-fault systems indicated a right-handed wrenching action occurred in late Neogene-Quaternary.The formation of strike-slip systems was indicative of the reactivity of the Tanlu Fault,a result of the long-distance impact by the collision between the Indian and Euroasian plates.The strike-slip systems formed significant petroleum traps,thus,they are favorable areas for future petroleum exploration.更多还原