Record details

Title
    Late Pleistocene Climatic Variations in Siberia Based on Loess-Palaeosol Records
Statement of responsibility
    Jiří Chlachula, Rob A. Kemp
Other titles
    Upper Pleistocene and Holocene Climatic Variations (Variant.)
Author
    Chlachula, Jiří
    Kemp, Rob A.
Language
    anglicky
Source title - serial
    Geolines
Vol./nr.
    Vol. 11
Pages
    p. 83-85
Year
    2000
Notes
    1 obr., 4 bibl.
    il.
    Zkr. název ser.: Geolines (Praha)
Subject group
    interglaciály
    magnetická susceptibilita
    paleoklimatologie
    periglaciální jevy
    pleistocén-svrchní
    prostředí glaciální
    půda fosilní
    spraš
    uhlík organický
    vápník
Geographical name
    Rusko-Sibiř
Keyword
    Based
    Climatic
    Late
    Loess-Palaeosol
    Pleistocene
    Records
    Siberia
    Variations
Abstract (in english)
   Loess-palaeosol records in Siberia represent a significant source of proxy data for reconstruction of past climates and climate change in the Northern Hemisphere. A series of high resolution loess sections recently studied in the Ob, Yenisei and Angara River basins within a 1500 km W-E continental transect shows patterned climatic variations and uniformity of natural environments across this territory during the Late Pleistocene. The key Late Quaternary Siberian record from Kurtak (Sections 29 and 33) in the Northern Minusinsk Basin provides evidence for a strongly fluctuating climatic change in the northern Euroasia during the Late Quaternary, with maximum deviation amplitudes between 130 and 10 ka BP.
   Magnetic susceptibility (low-frequency and FD%) records with other palaeoenvironmental proxy data (grain size, % CaCO3 and % organic carbon variations) show a globally diagnostic palaeoclimatic trends for the last glacial-interglacial cycle, and an environmental uniformity across southern Siberia. The last interglacial (sensu lato) includes several relatively short warm as well as very cold intervals (correlated with OIS 5e-5a), with a strongly continental warm climate sulminating around the peak of the last interglacial (OIS 5e) and gradual shift to more humid and cooler conditions during the following interstadial stages (OIS 5c and 5a). Due to its pronounced continetality, the Siberian loess record provides an excellent source of high-resolution palaeoclimatic proxy data of regional as well as global significance
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    3. 7. 2007
Import date
    8. 8. 2012