湘鄂赣二叠纪沉积盆地与层序地层

PERMIAN SEDIMENTARY BASINS AND SEQUENCE STRATIGRAPHY IN THE HUNAN HUBEI JIANGXI REGION

湘鄂赣二叠纪沉积盆地是在统一的陆板块——华南陆块基础上发展而来的。根据晚古生代以来的地壳活动情况、沉积物充填序列、沉积相带及空间配置，该区可以划分为四种沉积盆地，即扬子克拉通盆地、扬子克拉通北缘被动大陆边缘盆地、湘赣板内拉张盆地和华夏克拉通边缘盆地。由于不同沉积盆地中层序发展的主控因素及其相关效应的差异，从而决定了层序发育特点的差异。本文详细划分了各种沉积盆地的沉积层序和沉积体系域，并进行了区域对比。在此基础上。

The Permian sedimentary basins in the Hunan-Hubei-Jiangxi region are developed on the ground of the unified South China continental block.According to crustal activity,sedi- ment filling sequences,sedimentary facies belts and their spatial arrangement,the sedimen- tary basins in this region may be divided into Yangtze cratonic basin,passive marginal basin on the northern margin of the Yangtze craton,Hunan-Jiangxi intraplate extensional basin and Cathaysian pericratonic basin.The differences of the controlling factors and asso- ciated effects upon the sequence development are responsible for the differences of se- quence development.The present paper deals in details with the genesis and characteristics of the depositional sequences and depositional systems tracts in various sedimentary basins in the study area,and the regional correlations are also made in this paper.