基准面原理在陆相高分辨率层序地层对比作图中的应用--以东营凹陷梁家楼沙三段上亚段为例

以高分辨率层序地层学理论为指导，应用基准面原理，针对传统剖面作图方法在东营凹陷梁家楼地区沙三段上亚段一沙二段下亚段三级层序低水位体系域高分辨率层序地层对比作图中出现的问题，分析了等深法及层段顶面拉平作图法的不足，提出以地层基准面为顶界，恢复沉积物原始沉积形态的作图方法，并对其原理及合理性进行了探讨。该作图方法能够满足高分辨率层序地层学地层对比作图的精度要求。

Application of base - level principle to mapping continental high - resolution sequence stratigraphic correlation--taking upper 3rd member of Shahejie Formation in Liangjialou,Dongying Sag as an example

Many problems appeared when traditional profile mapping method was applied to mapping the high - resolution sequence stratigraphic correlation of lowstand system domain of third order sequence in the upper 3rd member to lower 2nd member of Shahejie Formation in Liangjialou area of Dongying Sag. Limitation of the bathymetric method and the method of leveling the interval top surface is analyzed based on the theory of high- resolution sequence stratigraphy and base level principle. A correlation mapping method is proposed in which the original sedimentary status of the sediment will be recovered taking formation base level as the top boundary. Its principle and rationality are discussed. This mapping method could meet the precision requirement of stratigraphic correlation map in high- resolution sequence stratigraphy.