摘要
通过对鄂西榔坪–枝柘坪地区奥陶系岩石组合、基本层序、沉积相的综合分析,结合野外露头层序界面识别,根据露头层序地层学原理和方法,本地区奥陶纪由下至上可划分为9个由海侵体系域(TST)和高位体系域(HST)组成的三级层序,据沉积层序演化特征编制的海平面相对变化曲线显示出与本区较好的可比性。
Based on systematical study on rock assemblages, primary sequence, sedimentary facies, the principle and method of outcrop sequence stratigraphy, combined with outcrop sequence boun- dary identification in Langping-Zhizheping Area of West Hubei, the Ordovician of the region can be divided into nine three-order sequence composed of transgressive system tract (TST) and highstand system tract (HST) from bottom to top. According to the sedimentary sequence evolution characteristic, the relative variation curve of sea level is shown to be comparable with the region.
基金
中国地质调查局国土资源大调查项目(1212011120784)。
