Multiproxy evidence of middle and Late Pleistocene environmental changes in the loess-paleosol sequence of Bůhzdař (Czech Republic)

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Serval ID
serval:BIB_DA258D356A46
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Multiproxy evidence of middle and Late Pleistocene environmental changes in the loess-paleosol sequence of Bůhzdař (Czech Republic)
Journal
Quaternary International
Author(s)
Flašarová Kristýna, Strouhalová Barbora, Šefrna Luděk, Verrecchia Eric, Lauer Tobias, Juřičková Lucie, Kolařík Petr, Ložek Vojen
ISSN
1040-6182
Publication state
Published
Issued date
06/2020
Peer-reviewed
Oui
Volume
552
Pages
4-14
Language
english
Abstract
Loess-paleosol sequences preserve information that can be used to reconstruct paleoenvironments. A dense network of reliably analyzed sequences from different geographic locations is crucial to address ecological and climatic trends, which occurred during the Pleistocene. This paper focuses on a loess-paleosol sequence in Bůhzdař, situated 9 km NW of Prague, Czech Republic. Geochemical approaches (total organic carbon, XRF elemental analyses, XRD mineralogy, 13C and 18O stable isotopes) are combined with grain-size distributions and optically stimulated luminescence (OSL) to assess the climatic conditions at the time of formation of the strata. The oldest loess at this location was formed circa 200 ka ago (MIS 7), making it the oldest loess in Central Bohemia for now. The Bůhzdař loess-paleosol sequence was highly affected by several erosion events, Eemian paleosols (MIS 5e) being completely missing. The partly relocated paleosols situated at the lower part of the Bůhzdař sequence represent a period of increased humidity during late MIS 7 and MIS 6. Despite the fact that the Bůhzdař profile is not particularly thick (5 m), significant changes in paleoclimate reconstructions have been detected.
Keywords
Loess-paleosol sequences, Bůhzdař, Czech Republic, Particle-size distribution, Total organic carbon, XRF, XRD, Stable isotopes 13 C and 18 O, OSL
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24/11/2019 20:12
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06/07/2024 7:05
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