Plejstocen przełomu Wisły środkowej w świetle nowej stratygrafii czwartorzędu
Abstract
PLEISTOCENE OF THE MIDDLE VISTULA RIVER GORGE IN THE LIGHT OF THE NEW STRATIGRAPHY OF QUATERNARY
Summary
The latest proposal of stratigraphic subdivision of the Quaternary in Poland (17, 18) makes it possible to update stratigraphy of the Pleistocene in the Middle Vistula River groge, elaborated over thirty years ago by W. Pożaryski (23-26).
In the sections of the Middle Vistula River gorge, the Pleistocene comprises three glacial horizons (Figs. 1 and 2, Table I), assigned to the glaciations 1, 2 and 3 in accordance with the subdivision proposed by W. Pożaryski in 1955. The horizons at present may be correlated with the San, Wilga, and Odra Glaciations, respectively (Table Il). The younger Pleistocene is here represented (Fig. 3) by four horizons of eolian loesses. The oldest of these horizons, called as the Older Loess, belongs to the Odra Glaciation, and the remaining ones (that is Lower, Middle, and Upper Younger Loess) - to the Vistulian Glaciation. The loess covers are separated by fossil soils, slope deposits as well as denudational-erosional surfaces.
The recent developments in geochronology make possible indirect estimations of thermoluminescence age of individual members of the Pleistocene in the Vistula River gorge (Fig. 3, Table Il).
Summary
The latest proposal of stratigraphic subdivision of the Quaternary in Poland (17, 18) makes it possible to update stratigraphy of the Pleistocene in the Middle Vistula River groge, elaborated over thirty years ago by W. Pożaryski (23-26).
In the sections of the Middle Vistula River gorge, the Pleistocene comprises three glacial horizons (Figs. 1 and 2, Table I), assigned to the glaciations 1, 2 and 3 in accordance with the subdivision proposed by W. Pożaryski in 1955. The horizons at present may be correlated with the San, Wilga, and Odra Glaciations, respectively (Table Il). The younger Pleistocene is here represented (Fig. 3) by four horizons of eolian loesses. The oldest of these horizons, called as the Older Loess, belongs to the Odra Glaciation, and the remaining ones (that is Lower, Middle, and Upper Younger Loess) - to the Vistulian Glaciation. The loess covers are separated by fossil soils, slope deposits as well as denudational-erosional surfaces.
The recent developments in geochronology make possible indirect estimations of thermoluminescence age of individual members of the Pleistocene in the Vistula River gorge (Fig. 3, Table Il).