THE DISTRIBUTES AND GEOLOGIC ENVIRONMENT CHARACTERISTICS OF RED BEDS IN CHINA

Based on the distribution characteristics and formation background, a regionalization of red beds in China is suggested, such as red beds in northwest, southwest, southeast and south-central China and parts of Xizang and North China. The study was focussed on the red beds in Sichuan-Yunnan region, representative of southwest China and the red beds in Gansu, the representative of northwest China, the geologic environment characteristics of the red beds, such as the geostructural characteristics, geomorphic characteristics, climatic environment characteristics etc. were studied. According to the geologic environment characteristics, the red beds in Sichuan-Yunnan region are zoned into those in Sichuan basin, Xichang Dianzhong, Dianxi and Gansu.