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(Article of periodic en Polonais - 1981)

Document title

O genezie niektorych srodplejstocenskich powierzchni na Nizu Polskim. (On the genesis of some intra-Pleistocene surfaces in the Polish lowlands)

Authors(s) and Affiliation(s)

MOJSKI J.E. ;

Abstract

In research on the Pleistocene of the Polish lowlands, too little attention has been paid so far to the study of the buried surfaces that separate the diverse deposits. Meanwhile, there is much to indicate that the phases during which the Pleistocene sediments were accumulated were brief in duration, and for most of the time various types of surfaces of unconformity (mainly erosional-denudational surfaces) became formed. The predominant type among them consists of buried depressions of the valley, which are copied most distinctly on the sub-Quaternary surface. These depressions are universally regarded as valleys that were formed in the inter-glacial, but they have a great number of festures in common with the subglacial channels to be found in the Polish lowlands, in the area that was covered by the ice sheet of the Last Glaciation. A study of those features and of the sediments that fill the valleys lead to the conclusion that frequently they are subglacial channels. They became formed here towards the end of various glaciations, and are filled with sediments that in their lower part are fluvioglacial, not fluvial. Later on, those sediments became altered by various processes, mainly by glacitectonics. (L'A.).

Source

Article of periodic

published at : Biuletyn Instytutu Geologicznego. Z Badan Czwartorzedu w Polsce Warszawa

Editor :

Millesime : 1981, vol. 321, no23 [pp. 83-97]

Bibliographic references : 39 réf.

Language

Polonais

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