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辽河盆地新老第三纪地层间断面 (N/E)形成于盆地由裂陷发育阶段向坳陷发育阶段转化的过渡时期 ,界面之下的裂陷沉积地层在早第三纪末期遭受了强烈剥蚀。在运用声波时差资料计算了近 4 0口单井的地层剥蚀量的基础上 ,分析了地形对地层剥蚀的控制作用 ,恢复了辽河盆地东部凹陷北部地区N/E间断面地层剥蚀厚度等值线图。结果显示该区域内N/E间断面地层剥蚀量的横向变化具有北部大、南部小、古河道两侧大、河道所在位置小的特点。
The Neozoic and Tertiary stratigraphic interlaces (N / E) of the Liaohe Basin were formed during the transitional period from the development of the rift to the development of the depression. The rift-sedimentary formations under the interface suffered from the late Early Tertiary Strong erosion. On the basis of using the acoustic time-difference data to calculate the denudation of formation in nearly 40 single wells, we analyzed the control effect of terrain on formation denudation and restored the contour of denudation thickness at the N / E intercept section in the northern part of Eastern Depression of Liaohe Basin Figure The results show that the lateral variation of the denudation of the N / E discontinuity in the area is characterized by large northern part, small southern part and large ancient channel on both sides with small channel location.