Аннотация:We present spatial distribution of loess soils sequences on the territory of East European and
Central Asian regions considering the vertical structure of collapsible loess sequences. Data
about loess key sections of Northern Eurasia (Moldova, Ukraine, Ciscaucasia, Central Asia)
are cited. We also present composition, structure and properties of buried soils from cyclic
loess sequences of East European and Central Asian regions that are characterized by grain
size distribution, organic content, natural density etc. Correlation of assessed collapse from
sampling with depth of occurrence, natural moisture content and porosity are revealed.
Maximal subsidence was observed under the natural humidity 5–15 %. Buried soils composed
of loess-like heavy sandy loams and loess-like light and average loams possess the greatest
value of subsidence. Only soils with porosity over than 40 % are subsiding. Alteration of
subsidence in the section of buried soils is considered. Two main types of subsidence
distribution can be distinguished on the basis of these limited data.