부산대학교 도서관

The paper presents the results on stratigraphy and chronology of the Late Pleistocene obtained on the basis of both OSL and 14C dating of paleosols and sediments in the Aleksandrov quarry, located in the Central Russian Upland. As this section was confined to the paleo-ravine, its layers reflected multiple alternations of the stages of soil formation, cryogenesis, and sedimentation in the Late Pleistocene. The studied sequence is one of the most detailed soil-sedimentary terrestrial archives in Eastern Europe owing to its specific geomorphological position. The climate changes from the Mikulino interglacial (MIS 5e) to the Holocene (MIS 1) are reflected. The Ryshkovo pedolithic complex (MIS 5e, 127–117 ka) with extremely detailed pedogenetic stages lies at the base of paleodepression. The first Early Valdai cooling, which is reflected by the Seim stratum, has an OSL age of 115 ka. Two interstadial paleosols, Kukuevo and Streletsk, were formed in the Early Valdai time (MIS 5c and MIS 5a). The Mlodat loess separating them has an OSL age of 91 ka. The Middle Valdai is represented by two main interstadial paleosols, Alexandrovka (53 ka BP in 14C) and Bryansk (33 ka BP in 14C). In the filling of the Late Valdai dells, there are zoogenically processed late-glacial loams formed during warming epochs, Bølling and Allerød. The presented chronostratigraphic scheme is compared with analogs obtained for other loess-soil archives of Eastern, Central, and Western Europe. [ABSTRACT FROM AUTHOR]