层拉平方法在沉积前古地貌恢复中的应用——以济阳坳陷东营三角洲发育区为例

Application of bedding flattening in the process of rebuilding paleogeomorpholog before basin deposition:A case Study in Dongying sag,Jiyang Depression

层拉平方法是近年来在层序地层学理论和物探新技术基础上发展起来的一种古地貌恢复方法。在陆相湖盆中进行古地貌恢复时,本文分析认为该方法具有一定的适用范围,首次提出只有在具有斜交前积结构的地区,该方法才能有最好的应用效果。本文利用该方法在东营凹陷东营三角洲发育区成功进行了古地貌恢复,较好的解决了该区沉积相研究中存在的一些矛盾问题,为准确分析该区沉积相奠定了基础。

Bedding flattening is a new method of rebuilding paleogeomorpholog before basin deposition on the base of development of the sequence stratigraphy and geophysical technology. But the author think that there is a limit for using the method in continental fault basin, and point firstly that It can only be used in the area of foreset bed. In this article, it is used successfully for rebuilding paleogeomorpholog in Dongying sag which deposites Dongying delta, resolves some contradiction of studing sedimentary facies, and is the base of analyzing sedimentary facies correctly.