The Palaeozoic caprocks in Erduosi Basin are mainly argillaceousrocks, aluminous rocks, gypsum rocks and dense carbonate rocks.
鄂尔多斯盆地古生界盖层主要为泥质岩、铝土岩、膏岩和致密碳酸盐岩。
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The Mesozoic source rocks at the northern Tarim basin belong to argillaceousrocks of continental facies, which are mainly developed in the Permian System and Jurassic System.
Some reservoir dam spillway slope is composed of argillaceousrocks and other soft rocks, the developing weak Interlayer, leads to complicated engineering geological conditions.