南华北盆地沈丘凹陷新构造时期断裂活动特征  

Shenqiu depression faults movement characteristics in southern North China basin during the neotectonic period

作　　者：张扬 王志铄 周栋梁[2] 侯娟[2] Zhang Yang;Wang Zhishuo;Zhou Dongliang;Hou Juan(Henan Earthquake Agency,Zhengzhou 450016,China;Henan Oilfeld Exploration and Development Institute of SINOPEC,Zhengzhou 450016,China)

机构地区：[1]河南省地震局,中国郑州450016 [2]中石化河南油田勘探开发研究院,中国郑州450016

出　　处：《地震地磁观测与研究》2018年第5期30-38,共9页Seismological and Geomagnetic Observation and Research

基　　金：河南省地震构造探查工程(2018-2020)

摘　　要：应用三维地震资料方差体识别断层技术,对南华北盆地沈丘凹陷三维地震资料新近系中部强反射界面进行综合解释,明确三门峡—鲁山—淮南断裂带沈丘凹陷段,即娄堤断裂在新构造时期的断裂运动模式及几何学特征,该断裂带在浅层为一组NWW向排列的雁列状走滑断裂,在纵向剖面上向深部收敛,呈陡立状下切,错断12 km左右滑脱面,具有潜在破坏性地震风险。Through application of the variance cube technology of 3D seismic data, comprehensive interpretation has been performed here according to Shenqiu depression 3D seismic data of the bright refecting interface of middle Neogene in southern North China basin to confrm the Loudi fault movement mode and geometry characteristics of the Shenqiu depression in Sanmenxia-Lu mountain-Huainan fault zone during the Neotectonic period, which is a set of shallow echelon strike-slip faults in NWW direction and converged towards deep ground on longitudinal section, and undercut steeply forming a detachement surface of about 12 km, which could be the potential risk resource of the earthquake.

关 键 词：南华北 沈丘 三维地震 走滑 

分 类 号：P315.5[天文地球—地震学]