Cryogenic-Lateral Hypothesis for the Formation of Parent Rocks for Soddy-Podzols (a Case-Study of the Structure of Ryshkovo Paleosol (MIS 5e) in the Taneyev Quarry of the Kursk Region)

The paleosol (MIS 5e), Late Moscow loess (MIS 6), and buried small erosional landforms in the Taneyev quarry of the Kursk region were studied. Determination of the age and conditions of formation of the parent rock and a texturally differentiated soil was made for the Ryshkovo paleosol of the Mikulino Interglacial (MIS 5e) in the center of the East European Plain. Macro- and micromorphological analysis of the selected profile, spore-pollen analysis were carried out, the OSL age and physico-chemical properties were determined, and a facial analysis for a catena was carried out, making it possible to detail the history of the development of small erosional landforms, soils and landscapes. It can conclude that the differentiation of the profile of the studied paleosol into Ah–E–Bt horizons is a product of the Mikulino interglacial, but the prerequisites for such differentiation – the formation of parent rock, were created by slope and permafrost processes back in the Moscow Late Glacial. The lithological matrix of the Ryshkovo paleosol did not remain unchanged due to the different history of interaction of such groups of processes as aeolian, slope (solifluction and colluvial) sedimentation, initial and interglacial soil formation.