江汉盆地早三叠世生态地层学及古地理特征

本文通过对江汉盆地早三叠世２０个群落生境型的分析及各时期群落的横向展布，揭示了江汉盆地早三叠世海平面及古地理演变特征，并将早三叠世生态体系演化划分为６个阶段。通过对江汉盆地早三叠世生态地层学研究，作者首次建立了其生态地层系统，其中包括２０个群落带，１０个群落组和３个群落群，并阐述了各生态地层单位的分布、组成及其生态环境与油气的关系。

Early Triassic Ecostratigraphy and Paleogeographic Character of Jianghan Basin

Based on the analysis of the habitat type of the Early Triassic twenty communities of Jianghan Basin and the crosswise extendance of communities of every age, the Early Triassic evolution of sea level and paleogeography are discussed in this paper,furthermore the Early Triassic ecosgstem is divided into six evolution ary stages. Based on the study of the Early Triassic ecostratigraphy of Jianghan Basin, the authors have firstly established the Early Triassic ecostratigraphic system of Jianghan Basin, which contains twenty community zones, ten community formations and three community groups.Their distributions, compositions, ecologic environment evolutions aswell as top and bottom boundary lines are expounded in this paper as well.