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    Wyświetlanie 1-2 z 2
    Tytuł:
    Middle Pleistocene fluvial, lacustrine and glaciolacustrine sediments of the Czyżów and Kuców Formations (Kuców 9, 10 and 16 sections), Bełchatów outcrop, central Poland – the problem of stratigraphical interpretation
    Autorzy:
    Krzyszkowski, Dariusz
    Wachecka-Kotkowska, Lucyna
    Nita, Małgorzata
    Wieczorek, Dariusz
    Powiązania:
    https://bibliotekanauki.pl/articles/2025048.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    lake deposits
    fluvial deposits
    oxbow
    Mazovian
    Ferdynandovian
    Kleszczów Graben
    central Poland
    Opis:
    The article presents results of research of three sections (Kuców 9, 10 and 16). Two of them record fluvial and lacustrine interglacial sediments and the third, cold-stage glaciolacustrine sediments. They were formed inside the Miocene – Pliocene syncline depressions in a central part of the southern horst within the Kleszczów Graben. Fluvial and lacustrine deposits of the Middle Pleistocene Interglacial (Mazovian or Ferdynandovian in the Czyżów Formation) are described from the Kuców 9 and 10 sections. Their sediments are located in marginal parts of a buried river valley and within an oxbow palaeolake, then covered by glaciofluvial deposits of the Ławki (Early Saalian) and Rogowiec (Late Saalian) Formations. The Kuców 16 section comprises ice-dam sandy lithofacies (Kuców Formation, Elsterian) of a marginal part in a proglacial lake. Two pollen diagrams of K65/15 and Kuców 9 sections represent the Mazovian (Holsteinian) succession, although in the Kuców 9 section some features are typical for the Ferdinandovian succession.
    Źródło:
    Studia Quaternaria; 2021, 38, 1; 53-66
    1641-5558
    2300-0384
    Pojawia się w:
    Studia Quaternaria
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Heavy-mineral assemblages from fluvial Pleniglacial deposits of the Piotrków Plateau and the Holy Cross Mountains - a comparative study
    Autorzy:
    Wachecka-Kotkowska, Lucyna
    Ludwikowska-Kędzia, Małgorzata
    Powiązania:
    https://bibliotekanauki.pl/articles/94384.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet im. Adama Mickiewicza w Poznaniu
    Tematy:
    heavy mineral analysis
    fluvial deposits
    Vistulian
    Pleniglacial
    central Poland
    Holy Cross Mountains
    Piotrków Plateau
    analiza ciężkich minerałów
    osady rzeczne
    Wisła
    środkowa Polska
    Góry Świętokrzyskie
    Opis:
    The heavy-mineral assemblages of Pleniglacial fluvial sediments were analysed for two river valleys, viz. the Luciąża River (at Kłudzice Nowe) and the Belnianka River (at Słopiec). These sites, on the Piotrków Plateau and in the Holy Cross Mountains respectively, are located in different morphogenetic zones of Poland that were affected to different degrees by the Middle Polish ice sheets. The study was aimed at determining the kind of processes that modified the heavy-mineral assemblages in the two fluvial sediments, at reconstructing the conditions under which these processes took place, and in how far these processes caused changes in the assemblages. The heavy-mineral associations of the parent material was taken as a starting point; this parent material were the sediments left by the Odranian glaciation (Warta stadial = Late Saalian). It was found that heavy-mineral assemblages in the Luciąża valley deposits are varied, particularly if compared with other fluvioglacial Quaternary deposits from the Polish lowlands, with a dominance of garnet. In the fluvial deposits of the Belnianka valley, zircon, staurolite and tourmaline dominate, with minor amounts of amphibole, pyroxene, biotite and garnet. This suggests that the deposits were subject to intensive and/or persistent chemical weathering and underwent several sedimentation/erosion cycles under periglacial conditions. In both valleys chemical weathering and aeolian processes were the main factors that modified the assemblages of the transparent heavy minerals; these processes were largely controlled by the climatic changes during the Pleistocene.
    Źródło:
    Geologos; 2013, 19, No. 1-2; 131-146
    1426-8981
    2080-6574
    Pojawia się w:
    Geologos
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-2 z 2

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