济阳坳陷上下第三系分界面是一个全盆地发育的沉积间断面 (N /E间断面 ) ,其形成于盆地由裂陷阶段向拗陷阶段转化的过渡时期 ,界面之下的断陷沉积地层在早第三纪末期遭受了强烈剥蚀。通过单井 N/E沉积间断地层剥蚀量的计算和古地形与剥蚀量关系的分析 ,绘制了济阳坳陷 N/E沉积间断地层剥蚀厚度等值线图。结果表明 ,不同构造位置的地层剥蚀量不同 :从凸起—斜坡—凹陷中心 ,地层剥蚀量顺次减小 ;区域上南部凹陷地层剥蚀量大 ,北部凹陷地层剥蚀量小 The upper and lower Tertiary interfaces in Jiyang Depression are sedimentary facies (N / E intercepts) developed in the whole basin. They formed during the transitional period from the rifting stage to the depression stage in the basin. The faults below the interface Sedimentary strata suffered intense erosion at the end of the Early Tertiary. Based on the analysis of the relationship between the single-well N / E sedimentary discontinuity and the relationship between the paleo-topography and denudation, the contour map of the denuded thickness of N / E sedimentary layer in Jiyang Depression is drawn. The results show that the amount of denudation is different at different tectonic positions: the amount of denudation decreases successively from the center of the uplift-slope-depression; the denudation in the southern depression in the area is large and the denudation in the northern depression is small