10 research outputs found

    Glaciotectonics of the selected regions of Poland

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    Niniejsze zbiorowe opracowanie powstało na podstawie szczegółowych (SMGP w skali 1: 50 000) i przeglądowych materiałów kartograficznych, publikowanych i archiwalnych opracowań autorskich oraz na podstawie Gacitektonicznej mapy Polski w skali 1:1 000 000, i stanowi swoisty, regionalny komentarz tekstowy do tej mapy. W podziale Polski na obszary: północno-zachodni, północny, północno-wschodni, zachodni i środkowozachodni, środkowy i środkowowschodni, południowo-wschodni oraz południowy przedstawiono opisy zaburzonych glacitektonicznie form i osadów powierzchniowych i kopalnych. Występowanie zaburzeń glacitektonicznych w Polsce związane jest przede wszystkim z zasięgami młodszych zlodowaceń i z miąższością ulegającego deformacjom podłoża. Formy i osady były zaburzane albo przez pionowe i poziome naciski aktywnego (transgredującego) lądolodu, albo przez nacisk pionowy na podłoże stagnujących mas lodowych. Prace nad uzupełnianiem zawartych w opracowaniu opisów wybranych obszarów Polski oraz treści Glacitektonicznej mapy Polski w skali 1:1 000 000 będą kontynuowane zarówno przez wnoszenie nowych danych, jak też przez rozszerzanie i uszczegółowianie legendy o nowe wydzielenia i oznaczenia wiekowe.The presented complete edition was prepared on the base results of the detailed (Detailed Geological Map of Poland in scale 1:50 000) and review geological mapping, published and archival data, as well as an explanations and symbols elaborated for Glaciotectonic Map of Poland in scale 1:1 000 000. Therefore this elaboration, presenting the regional description of the glaciotectonic features within selected regions of Poland, compose specific textural explanations for this map. Within the territory of Poland subdivided on following regions: North-Western, North, North-Eastern, Western, Middle-Western, Middle, Middle-Eastern, Southern, South-Eastern, glaciotectonicly disturbed landforms and sediments either expressed in recent relief or buried (stated in borings or in exposures) were described. Distribution of glaciotectonic features over the territory of Poland is related primarily to the presence younger glaciations and thickneses of the deformable substratum. Generally, the landforms and sediments were deformed by active ice sheets through the horizontal and vertical thrusts of the ice masses, as well as by vertical stress of the stagnant ice masses. The supplementary works under in details description of the glaciotectonic features in particular regions of Poland will be continued, as well as completed the contents of the Glaciotectonic Map of Poland in scale 1:1 000 000

    Modern and ancient periglacial river types

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    Climate has been proposed conventionally as the primary factor that determines periglacial river activity (aggradation) and pattern (braided). This concept does not explain the rich diversity in river patterns and morphological processes in both the present and past periglacial environments: besides braided rivers and sandur, meandering, anabranching, transitional and deltaic rivers also occur. A first attempt is made to combine past and present periglacial river types with regard to their morphology, processes and environments. The processes that control river energy and morphology are discussed especially for periglacial conditions. This approach permits an assessment of the responses of periglacial rivers to climatic conditions and the modulation of the responses due to changes in the basin properties. Examples drawn from palaeo- and present-day periglacial rivers and environments demonstrate that there is no unique type of periglacial river but rather an azonal fluvial system with a number of periglacial variants

    The last Eurasian ice sheets – a chronological database and time‐slice reconstruction, DATED‐1

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    Fluvial responses to the Weichselian ice sheet advances and retreats: implications for understanding river paleohydrology and pattern changes in Central Poland

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