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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/5599

    Título
    Late Pleistocene paleosol formation in a dynamic aggradational microenvironment - A case study from the Malá nad Hronom loess succession (Slovakia)
    Autor
    Bradák, BalázsUBU authority Orcid
    Csonka, D.
    Novothny, Ágnes
    Szeberényi, J.
    Medveďová, A.
    Rostinsky, P.
    Fehér, K.
    Barta, Gabriella
    Végh, T.
    Kiss, K.
    Megyeri, M.
    Publicado en
    Catena. 2021, V. 199, 105087
    Editorial
    Elsevier
    Fecha de publicación
    2021-04
    ISSN
    0341-8162
    DOI
    10.1016/j.catena.2020.105087
    Abstract
    The geomorphological characteristics of the loess succession at Malá nad Hronom (Slovakia) mean that it provides a valuable opportunity for the investigation of differences in soil formation in various topographic positions. Along with the semiquantitative characterization of the paleosols (on the basis of physical properties, texture, the characteristics of peds, clay films, horizon boundaries), high-resolution field magnetic susceptibility measurements and sampling were carried out along four different sections of the profile. Samples for luminescence dating were also taken, in order to establish the chronostratigraphical position of the paleosols studied. The comparison of various proxies revealed the differences in soil formation in a dynamic aggradational microenvironment for the same paleosol horizons located in various positions along the slope. Contrary to expectation, paleosols developed in local top or slope topographical positions did not display significant differences in e.g. in their degree of development, nor the characteristics of their magnetic susceptibility curves. In the case of paleosols in positions lower down the slope, signs of quasi-permanent sediment input could be recognized as being present as early as during the formation of the soil itself. This sediment input would seem to be surpassed in the case of pedogenesis strengthened by the climate of the last interglacial (marine isotope stage - MIS 5). Pedogenesis seems to be sustained by renewed intense dust accumulation in the Late Pleistocene, in MIS 3, though compared to MIS 5, the climate of MIS 3 did not favor intense pedogenesis. Despite the general belief that loess series formed in plateau positions can preserve terrestrial records without significant erosion, in the case of the Malá nad Hronom loess this is not so. Compared to the sequence affected by erosional events in the local top position, the sequence affected by quasi-continuous sediment input in the lower slope position seems to have preserved the soil horizons intact.
    Palabras clave
    Sedimentation
    Pedogenesis
    Paleogeomorphology
    Multiproxy
    Heatmap
    Principal component analysis
    Materia
    Física
    Physics
    URI
    http://hdl.handle.net/10259/5599
    Versión del editor
    https://doi.org/10.1016/j.catena.2020.105087
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    • Artículos PALEOMAG-UBU
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