Article
Article name CRYOGENESIS OF SEASONALLY THAWING FINE-GRAINED DEPOSITS IN THE CONDITIONS OF THE SOUTHERN PART OF THE TRANSBAIKAL CRYOLITHOZONE
Authors Zhekeznyak M.. doctor of geological and mineralogical sciences,
Bibliographic description
Category Earth science
DOI 551.345
DOI 10.21209/2227-9245-2019-25-6-21-28
Article type научная
Annotation Information is given on the temperature and humidity regime, the depth of seasonal freezing and thawing of permafrost in natural conditions of the southern part of the Transbaikal cryolithozone. A characteristic of the cryogenic state of deep freezing seasonally thawed rocks is given. The analysis of the regularities of cryogenesis during the freezing of seasonally thawed fine-dispersed rocks: dynamics of freezing and thawing, redistribution of pore water, formation, transformation and degradation of cryogenic textures in the frozen layer of rocks and in the underlying permafrost top are presented. The results of experimental field investigations and theoretical justification of the deep seasonal freezing dependence of the seasonally thawed layer of a massif of fine-dispersed permafrost rocks on the complex of physical and geographic conditions in the south of Transbaikalia including moisture deficiency, wind activity and turbulence of the atmosphere near the earth\'s surface, barometric pressure and diffusion of gases, and open frost cracks, high surface porosity of the massif. The nature of cryogenesis in the frozen seasonally thawed layer of an array of fine-dispersed permafrost rocks due to their convective heat exchange with the atmosphere, whose role and contribution to the process of cryogenesis in qualitative and quantitative aspects of research has not yet been properly evaluated by experts.
Key words Key words: fine-dispersed rocks; pores; freezing; thawing; cryogenic migration; water; ice; moisture; cryogenic texture
Article information Zheleznyak I. Cryogenesis of seasonally thawing fine-grained deposits in the conditions of the southern part of the Transbaikal cryolithozone // Transbaikal State University Journal, 2019, vol. 25, no. 6, pp.21-28
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Full articleCRYOGENESIS OF SEASONALLY THAWING FINE-GRAINED DEPOSITS IN THE CONDITIONS OF THE SOUTHERN PART OF THE TRANSBAIKAL CRYOLITHOZONE