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- Title
Sedimentation Rate of the Floodplain Alluvium in the Center of European Russia According to the Study of Buried Soil Series.
- Authors
Aleksandrovskii, A. L.; Golosov, V. N.; Zamotaev, I. V.
- Abstract
The deposition rate of the floodplain alluvium in various periods of the Holocene is determined for the Istra, Oka, and Seim rivers using a combination of dating methods (radiocarbon, radiocesium, and historical–archeological) and our original method based on estimation of the degree of evolution of the profile of soils buried in the alluvium. The spatial–temporal differences in the floodplain sedimentation rates are established as a result of chronological and soil-geomorphological studies. In the young floodplain areas, the rate is 1.8‒23 (Seim River) and 2‒15 (Istra River) mm/year in contrast to 0.01–0.70 mm/year in ancient areas (Oka and Seim rivers) in various deposition periods and when periods of intensified sedimentation were short. New refined data on typical sedimentation rates in floodplains of the center of the East European Plain are based on the study of the young fast-growing floodplain of the Istra River, the sediments of which are dated on the basis of historical–archeological materials: the sedimentation rate of the alluvium with and without pedogenetic features is 2‒15 and >15 mm/year, respectively, and the cumulative soils accumulate at a rate of 0.5–2 mm/year. Based on the 14С and archeological dates, the cyclic oscillations of the sedimentation rate in the Holocene are established along the Nikitino section (Oka River), which is characterized by a large series of well-developed paleosols: ~2 mm/year during the accumulation of the alluvium layers, which is 20 times higher than during the longer period of soil formation (0.07–0.14 mm/year).
- Subjects
ALLUVIUM; SEDIMENTATION &; deposition; FLOODPLAINS; PALEOPEDOLOGY; SOILS; CESIUM
- Publication
Doklady Earth Sciences, 2023, Vol 513, pS140
- ISSN
1028-334X
- Publication type
Article
- DOI
10.1134/S1028334X23602493