The sandstones of the Turpan Basin belong mostly to graywacke and their compositional and textural maturity are generally low,indicating a strong erosional and rapid transportational environment.

吐-哈砂岩主要属杂砂岩类，总结构熟度和分熟度均较低，形于强烈剥蚀、快速搬运沉积环境中。