Podrobnosti záznamu

Název
    High-resolution record of the environmental response to climatic variations during the Last Interglacial-Glacial cycle in Central Europe: The loess-palaeosol sequence of Dolní Věstonice (Czech Republic)
Autor
    Antoine, P.
    Degeai, J.-P.
    Fuchs, M.
    Gauthier, C.
    Hatté, Ch.
    Kreutzer, S.
    Lagroix, F.
    Lisá, Lenka
    Moine, O.
    Rousseau, D.-D.
    Svoboda, J.
Jazyk
    anglicky
Typ dokumentu
    článek v odborném periodiku
Zdrojový dokument - seriál
    Quaternary Science Reviews
Svazek/č.
    Roč. 67, 1 May
Strany
    s. 17-38
Rok
    2013
Poznámky
    Rozsah: 22 s. : P
Předmětová kategorie
    Early-glacial
    environmental magnetism
    grain size
    loess palaeosol
    malacology
    organic carbon
    OSL
    palaeopedology
    Weichselian
Klíčové slovo
    Central
    Climatic
    Cycle
    Czech
    Dolní
    During
    Environmental
    Europe
    High-resolution
    Interglacial-Glacial
    Last
    Loess-palaeosol
    Record
    Republic
    Response
    Sequence
    Variations
    Věstonice
Abstrakt (anglicky)
   High-resolution multidisciplinary investigation of key European loess-palaeosols profiles have demonstrated that loess sequences result from rapid and cyclic aeolian sedimentation which is reflected in variations of loess grain size indexes and correlated with Greenland ice-core dust records. This correlation suggests a global connection between North Atlantic and west-European air masses. Herein, we present a revised stratigraphy and a continuous high-resolution record of grain-size, magnetic susceptibility and organic carbon δ13C of the famous of Dolní Vestonice (DV) loess sequence in the Moravian region of the Czech Republic. A new set of quartz OSL ages provides a reliable and accurate chronology of the sequence's main pedosedimentary events. The grain size record shows strongly contrasting variations with numerous abrupt coarse-grained events, especially in the upper part of the sequence between ca 20-30 ka.
   This time period is also characterised by a progressive coarsening of the loess deposits as already observed in other western European sequences. The base of the DV sequence exhibits an exceptionally well-preserved soil complex composed of three chernozem soil horizons and 5 aeolian silt layers (marker silts). This complex is, at present, the most complete record of environmental variations and dust deposition in the European loess belt for the Weichselian Early-glacial period spanning about 110 to 70 ka, allowing correlations with various global palaeoclimatic records. OSL ages combined with sedimentological and palaeopedological observations lead to the conclusion that this soil complex recorded all of the main climatic events expressed in the North GRIP record from Greenland Interstadials (GIS) 25 to 19.
Přispěvatel
    AV ČR Brno, Geologický ústav
Kód přispěvatele
    AV ČR, GLÚ
Zdrojový formát
    U
Datum importu
    23. 10. 2014