Lichen fields-blooms of orange and gray over red sand and crusts of blackish gypsum-keep the soil stable and are a critical source of food for invertebrates.
The gypsum that is a symbol of droughty climate and occlusive environment is extensive in Neogene Red Clay.
石膏作为干旱气候和闭塞环境的标志,广泛存在于第三系红层之中。
3
The Sichuan Basin is one of the most representative basins in Cretaceous terrestrial basin, in which a suite of red clastic deposition, especially gypsum and desert facies had been widely deposited.