Upper Permian paleosols of the East European Platform: Diagnostics of pedogenesis and paleogeographic reconstruction

A vertical sequence of seven buried paleosols composing the Klimovsk pedocomplex was studied in the basin of the Sukhona River (Vologda oblast). These paleosols were formed according to the accumulative model of pedogenesis (pedosedimentation model). They had monogenetic profiles with eluvial-gley,...

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Bibliographic Details
Published in:Eurasian soil science 2010-02, Vol.43 (2), p.127-140
Main Authors: Inozemtsev, S. A., Targulian, V. O.
Format: Article
Language:English
Subjects:
Alluvial plains
Carbonates
Dry season
Drying
Earth and Environmental Science
Earth Sciences
Genesis and Geography of Soils
Geochemistry
Geology
Geotechnical Engineering & Applied Earth Sciences
Humification
Hydrology
Intermittent streams
Paleoecology
Paleosols
Permian
Rainy season
Soil sciences
Translocation
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Summary:A vertical sequence of seven buried paleosols composing the Klimovsk pedocomplex was studied in the basin of the Sukhona River (Vologda oblast). These paleosols were formed according to the accumulative model of pedogenesis (pedosedimentation model). They had monogenetic profiles with eluvial-gley, structural, and carbonate-illuvial types of differentiation. The set of elementary pedogenic processes responsible for the development of these soils included gleyzation in the surface horizon and around the roots, the inter- and intrahorizon translocation and segregation of iron, structuring, humification, weathering, lessivage, the migration and segregation of carbonates, and the synthesis of palygorskite and analcime. The studied paleosol profiles make it possible to reconstruct seven pedogenetic stages; each of them lasted for about n × 10 2 –10 3 years. The paleosols were formed on a flat lacustrine-alluvial plain with drying lakes and temporary streams. The stages of inundation and water stagnation on the surface alternated with the stages of drying of the territory. The climate was warm, with well-pronounced wet and dry seasons. Against this general climatic background, arid climatic epochs marked by the development of calcic paleosols alternated with humid climatic epochs marked by the development of noncalcareous paleosols.
ISSN:1064-2293
1556-195X
DOI:10.1134/S106422931002002X