X iao Chuantao Li weifong and Hu Mingy
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摘要: 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。Abstract: Bused on analysis of the habitat type of the Early Triassic twenty communities of,Jianghan Basinand the crosswextendance of communities of every age, the Early Triassic evolution of sea level andpaleogeography are discussed in this paper, furthermore the Early Triassic ecosgstem is divided into sixevolution wry stages. Based on the study of the Early Triassic。ostratigraphy of,Jianghan Basin, the au-thorn have firstly established the Early Triassic ecostratigraphic system of,Jianghan Basin, which con-twins twenty community zones, ten community formations and three community groups. Their distribu-ti on s, compositions, ecologic environment evolutions aswell as top and bottom boundary lines are ex-pounded in this paper as well.
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Key words:
- ecosysten system /
- paleogeography /
- ecostratigsaphy /
- Jianghan basin /
- Early Triassic
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