Neogene friable deposits of the Quaternary age, widespread in Mongolia, belong to loess-like subsidence soils, mainly type I terms subsidence, and are kyrogenic-sublimation origin. As a result sublimation process permafrost ice (the most recent Altai-Tunguska which covered Euro-Asian region 15-18 thousand years ago) seasonal deep frozen occurring for many structure is decompacted, as latter, po...