Record details

Title
    Major element geochemistry of recent sediments from the Fláj basin (Krušné hory-Erzgebirge, Czech Republic)
Statement of responsibility
    M. Hobzová, Petr Jakeš, Martin Mihaljevič
Author
    Hobzová, M.
    Jakeš, Petr, 1940-2005
    Mihaljevič, Martin
Language
    anglicky
Source title - serial
    Applied geochemistry
Vol./nr.
    Vol. 16, no. 3
Pages
    p. 271-279
Year
    2001
Notes
    11 obr., 4 tab., 23 bibl.
    il.
    Zkr. název ser.: Appl. Geochem.
Subject group
    acidifikace
    granit
    krušnohorské krystalinikum
    kyselý déšť
    mobilita
    nádrž vodní
    povodí
    prvky hlavní
    rula
    sedimentace recentní
    zvětrávání chemické
Geographical name
    ČR-Čechy
    Fláje (Most)
Keyword
    Basin
    Czech
    Element
    Fláj
    Geochemistry
    Hory-Erzgebirge
    Krušné
    Major
    Recent
    Republic
    Sediments
Abstract (in english)
   The weathering products of the granitic rocks (which are poor in base cations) and their sediments in the Fláje basin, in an environment that is strongly influenced by SO2 and NOx emissions have been studied. High deposition of SO2 and consequent acidification of the environment causes further depletion of base cations, mobilisation of Al and modification of the weathering reactions resulting in changes of the geochemical features of recent sediments. Depletion of the bottom sediments of the Fláje basin in base cations and Al and their enrichment in Si, compared to the fresh stream sediments and eluvium, suggests a mineralogical modification of the weathering product due to prolonged contact with basin water. Depletion of the non-silicate phase of the sediment in base cations which are replaced with Al on the other hand appears to be more effective in eluvium and those sediments which are exposed directly to the effect of acid deposition, i.e.
   which are not below water level for the major part of the year. The water of the basin appears to be main factor influencing the composition of the recent sediments of the basin in the acidified catchment
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    23. 8. 2007
Import date
    8. 8. 2012