Rekonstrukcja przebiegu zlodowacenia warty w regionie łódzkim

• Main Author: Rdzany, Zbigniew
• Other Authors: Department of Physical Geography, Faculty of Geographical Sciences, Łódź University, [e-mail]
• Format: Book
• Language: Polish
• Published: Wydawnictwo Uniwersytetu Łódzkiego 2009
• Subjects: region łódzki; Łódź Region; zlodowacenie warty; Warta Glaciation; ice-sheet; Saalian; glacial forms; glacigenic sediments; Ice Sheet
• Online Access: http://hdl.handle.net/11089/6393

This study presents a reconstruction of the course of events during the Warta Glaciation in the Łódź Region. It includes an analysis of the Warta stratigraphic unit, a description of development and decay features of the Warta ice-sheet (Late Saalian ice sheet) as well as features of the environment in which it functioned. The study puts major emphasis on the reconstruction of the process of shaping glaciogenic landscape, prepared on the basis of lithofacial features of sediments they were composed of, relations to older and younger sediments, and traces of tectonic activity. The reconstruction of the course of Warta ice-sheet transgression and retreat in the Łódź Region against the background of the entire Eurasian ice-sheet during MIS 6, indicates the presence of individual features and large-space character of this glaciation in relation to the situation during the preceding warming, when glaciation extent was limited to a fragment of Fennoskandia. The distinctiveness of the Warta ice-sheet is supported by a number of conditions, one of them being the presence of complex structures which point to a wide array of glacial events, including several short stages of ice-sheet readvance in the post-maximum period. These sub-phases or phases of the cataglacial period of the Warta Glaciation were noticeable in different regions, which suggests activation of individual elements of the stream-based distribution of ice-sheet masses. It is more characteristic of complete glaciation than of a smaller unit. Independently of local dissimilarities, in areas where glacial accumulation prevailed, one basic level of glacial till occurs, relatively easy to identify with the use of various methods. The Warta Glaciation took place between the pre-Warta warming, whose climatostratigraphic rank has not been fully established, and the Eemian interglacial, which is the best documented interglacial apart from the Holocene in both marine and land areas. In the Łódź region there are several uncertain locations of pre-Warta warming and at ...