It ' s a kind of dead soft - rock with some special characteristics of muddiness , softenness , dehydrate and rift etc when it meet water . however , the articles about the socketed piles in this stratum had not been discovered 昔格达组泥岩在四川境内的西昌、攀枝花地区分布较为广泛，该岩层具有遇水泥化、软化和脱水开裂等特征，属极软岩类。
