The Early Permian sedimentary configuration in Bogda mountain and its adjacent basins are characterized by normal grading from coarse to fine,being a typical extensional molasse.

• 博格达山及相邻盆地中的下二叠统的沉积建造总体上具有由粗到细的正粒序特征,为典型的伸展磨拉石建造;