中文摘要：

断裂控制了珠江口盆地南北分带、东西分块的构造格局,同时与油气运移和油气藏的形成分布关系密切.以2010年珠江口盆地北部的反射地震数据为基础,同时收集了邻区的反射地震资料,对珠江口盆地的北部断阶带、北部坳陷带和中央隆起带的内部及其边界断裂构造特征进行对比研究.结果表明,北部断阶带主要发育倾向SE的板式断层;北部坳陷带内断裂构造最为发育,断裂组合有半地堑、地垒、窄地堑等样式;中央隆起带内广泛发育倾向NW的反向铲式断层.珠江口盆地北部在断陷阶段断层的活动速率最高,拗陷阶段次之,热沉降阶段最低,各地质单元内断裂构造特征的差异与珠江口盆地经历的多幕拉张以及块体的差异性升降有关.

英文摘要：

Faults are the dominating factor generate a framework that belts in S-N and blocks in E-W in the Pearl River Mouth Basin（PMRB）,which also has close relationship with hydrocarbon migration and the formation and distribution of reservoirs.Based on the multichannel seismic data in the northern PMRB and reflection seismic data collected in its adjacent sea area,this paper conducts a comparative research on fault structure characteristics in the interior and boundary of Northern Fault Terrace Zone（NFTZ）,Northern Depression Zone（NDZ）and Central Uplift Zone（CUZ）of the northern PMRB.The results show that NFTZ mainly develops slabsurface faults which dip southeast.The faults are mostly developed in NDZ,which combine the styles of half graben,horst,and narrow graben.The antithetic shovel-like faults which dip northwest are widely developed in CUZ.The fault activity rate in the northern PMRB is the highest in faultedsubsidence stage,followed by depressed-subsidence stage,and thermal subsidence stage lowest.The distinction regarding fault structure characteristics in different geological units are close related to the multi-episode stretch and differential uplift and subsidence of blocks in the northern PMRB.