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«IZVESTIYA IRKUTSKOGO GOSUDARSTVENNOGO UNIVERSITETA». SERIYA «NAUKI O ZEMLE»
«THE BULLETIN OF IRKUTSK STATE UNIVERSITY». SERIES «EARTH SCIENCES»
ISSN 2073-3402 (Print)

List of issues > Series «Earth Sciences». 2017. Vol. 20

The Dynamics of Aeolian Morphogenesis in the Central Part of the Selenga Middle Mountains

Author(s)
D. V. Kobylkin, V. A. Golubtsov, E. A. Batozyrenov
Abstract
This paper presents the data on the dynamics of aeolian relief formation during the Holocene and historical era in the central part of the Selenga midland. Based on the study of soil-sedimentary sections and its radiocarbon dating the stages of soil formation corresponds with an relatively favorable climatic conditions were distinguished. Arid phases correspond to activation of aeolian processes and manifest themselves as horizons of loess and sand deposits overlying the buried soils. The most intense, they were proceeded at the Late Glacial – Holocene border (12,9–11,7 kyr BP) and Early Holocene (10,5–9,4 kyr BP), in the Atlantic (8,6–6,9 kyr BP), beginning (~ 5,4–4,8 kyr BP) and the end (~ 3,4–2,9 kyr BP) of Subboreal period of Holocene.
Analysis of historical and literature data revealed the process of farmland degradation of Nomohonovo place into desert landscape, unsuitable for further agricultural use. For this territory results of investigation of the morphological structure, the rate of aeolian landforms formation and particle size distribution of the constituent of sand are presented. Last intensification of desertification processes associated with extensive farming. Currently, these processes are in a state of stagnation, and only local territories in sandy areas subject to wind action.
Keywords
aeolian relief formation, desertification, Holocene, palaeosoils, radiocarbon datings
UDC
551.435.7 (571.5)
References

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