本文研究地区为鄂西南清江流域中、下游(下游为重点)。区内广布震旦系至中三迭统碳酸盐岩和碎屑岩,仅东部沉积白垩系及下第三系红色岩系。横亘区域构造为东西展布的长阳—五峰褶皱束。区域地貌具有大面积隆起及起伏微缓的岩溶高原形态,地势自西向东降低。 In this paper, the study area is in the middle and lower reaches of the Qingjiang River basin in southwest Hubei Province (the downstream is the key point). The area is widely distributed from the Sinian to Middle Triassic carbonate rocks and clastics, only the eastern Cretaceous and the Lower Tertiary red rock series. Span across the regional structure for the distribution of things Changyang - Wufeng fold beam. The regional geomorphology has the shape of karst plateau with a large area of ​​uplift and slight fluctuation, and the terrain is reduced from west to east.