Abstract
Abstract The central part of the Woźniki-Wieluń Upland is characterised by mature old glacial landforms associated with the Middle- Polish Glaciations. In some areas, however, more pronounced post-glacial landforms can be observed that were remodelled by later morphogenetic processes to a lesser extent. To the south-east of Krzepice, in the vicinity of Dolisko, there is an extensive depression in which twelve parallel ridges can be found. In terms of their morphology and location as well as due to their relationship to the surrounding landforms, the ridges examined resemble forms that would be referred to as drumlins, glaciotectonic forms or glacial curvilineations in late glacial areas. The material presented is the result of the initial research stage. The studies conducted in this stage involved primarily geomorphological mapping supplemented by an analysis of landforms on a shaded relief model and on an orthophotomap. At the current stage of studies on the glacigenic landforms in the vicinity of Dolisko, three scenarios concerning their origins have been put forward that need to be verified. The first scenario involves glaciotectonic origins, the second assumes that they were formed in the same manner as classic drumlins, fluted moraines or longitudinal squeeze ridges, and the third scenario assumes that they have the same origins as glacial curvilineations. The group of glacigenic ridges discussed is a glacial landform unique in southern Poland.
Highlights
The contemporary relief of the Woźniki-Wieluń Upland features many glacigenic landforms from the Middle-Polish Glaciations (KLIMEK, 1966; GILEWSKA, 1972; KRZEMIŃSKI, 1974, 1999; SZUBERT, 2012)
It is assumed that areal deglaciation dominated in the area (KLIMEK, 1966; KRZEMIŃSKI, 1974, 1999)
The first one involves glaciotectonic origins, the second assumes that the ridges at Dolisko were formed in the same manner as classic drumlins, fluted moraines or longitudinal squeezed ridges, and the third scenario assumes that they have the same origins as glacial curvilineations
Summary
The contemporary relief of the Woźniki-Wieluń Upland features many glacigenic landforms from the Middle-Polish Glaciations (KLIMEK, 1966; GILEWSKA, 1972; KRZEMIŃSKI, 1974, 1999; SZUBERT, 2012). It is assumed that areal deglaciation dominated in the area (KLIMEK, 1966; KRZEMIŃSKI, 1974, 1999). While the late glacial zone in Polish territory exhibits well preserved postglacial landforms, in the old glacial zone they are much less pronounced. Twelve parallel ridges can be found, which are separated by longitudinal troughs. They run from the south-west to the north-east and towards the north. The depression has been interpreted as a kettle hole with well-preserved ridges of unknown origin inside. No similar old glacial forms were previously reported in southern Poland or demarcated on geological and geomorphological maps
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