Record details

Title
    Geochemie jeskynních sedimentů Šošůvské jeskyně v Moravském krasu
Statement of responsibility
    Josef Zeman
Other titles
    Geochemistry of Šošůvka cave sediments in Moravian Karst
Author
    Zeman, Josef
Language
    česky
Source title - serial
    Acta Musei Moraviae. Scientiae geologicae
Vol./nr.
    Roč. 87
Pages
    s. 245-263
Year
    2002
Notes
    12 obr., 2 tab.
    Anglické resumé
    il.
    Obsahuje bibliografické odkazy
    Zkr. název ser.: Acta Mus. Morav., Sci. geol.
Classfication no.
    552
Conspectus category
    552
Subject group
    chemismus hornin
    datování Th/U
    jeskyně
    kras
    kvartér
    kvartér Českého masivu
    paleomagnetismus
    sedimenty jeskynní
    sedimenty karbonátové
    sedimenty klastické
Geographical name
    ČR-Morava
    Moravský kras
    Šošůvka (Blansko, Blansko)
Keyword
    Geochemie
    Jeskyně
    Jeskynních
    Krasu
    Moravském
    Sedimentů
    Šošůvské
Abstract (in english)
   Cave sediment geochemistry is still quite omitted discipline in the cave sediment research. The study of 25 samples from Šošůvka cave in Moravian Karst performed within the frame of retrieval archeological-paleontological research proved that the very useful information can be extracted even from the basic evaluation of geochemical data. According to the sediment chemical composition Šošůvka cave can be divided into two parts despite of sample position in sediment layer and ratio of its sand/clay content. First one can be characterized by relatively low content of SiO2 (around 55 wt. per cent) and higher content of CO2 (even more than 10 wt. per cent), both with high variability. Second part contains cave sediments with higher SiO2 concentration (65 wt. per cent), low concentration CO2 (around 5 wt. per cent) and relatively uniform distribution. Some other main components follow the trend of SiO2 (A12O3, K2O, Na2O, partly MgO).
   This is probably caused by their common binding in clay minerals. Ferrous iron, ferric iron and manganese do not show any difference between the two parts, but has good correlation each other. The special behavior showed phosphorus with extreme high content in some samples (more than 10 wt. per cent of P2O5). Source of phosphorus can be ascribed to the previously found fossil bones. Content of CaO shows much higher correlation to the P2O5 content than to CO2. This indicates that major amount of calcium is included in hydroxyapatite and only minor amount come from calcium carbonate (calcite, aragonite). Despite of the fact that the both previously defined parts forms one uniform cave space without distinct differences the cave sediment geochemistry indicate their different evolution
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    31. 3. 2008
Import date
    8. 8. 2012