Record details

    Uzavřeniny anhydritu a barytu v jurských geodách z Moravy a jejich genetický význam (24-41 Vyškov)
Statement of responsibility
    Zdeněk Losos, Antonín Přichystal, Dana Richterová
Other titles
    Anhydrite and barite inclusions in Jurassic geodes from Moravia and their genetic significance
    Losos, Zdeněk
    Přichystal, Antonín, 1950-
    Richterová, Dana
Source title - serial
    Geologické výzkumy na Moravě a ve Slezsku
    Roč. 7
    s. 66-68
    1 obr., 2 tab., 6 bibl.
    Anglické resumé
    Zkr. název ser.: Geol. Výzk. Mor. Slez. v Roce 1999.
Subject group
    geologie regionální
    jura Českého masivu
Geographical name
    Klepačov (Blansko)
    Olomučany (Blansko)
    Rudice (Blansko)
    Žabčice (Brno-venkov)
Abstract (in english)
   The first find of common anhydrite and barite inclusions in Jurassic geodes from Olomučany (Rudice formation) and Žabčice (Pleistocene gravels) in Moravia was determined by EDX- and XRD-analyses. Size of inclusions ranges between 0.X-0.0X mm. They are concentrated mostly in external parts of the geodes in quartz aggregates. the silica geodes with "cauliflower" surface originated through replacement of sulhate nodules by SiO2. This model was proposed for first time by Petránek (1995) according to the morphological similarly of Moravia geodes with some geodes from England and Iraq containing sulphate inclusions. from the paleoclimatic point of view, nodular anhydrite is typical for sediments originating by precipitation from hypersaline groundwaters in marginal marine or continental sabkha or playa situations. Our new results allow to suppose similar sedimentary conditions during the Upper Jurassic in Moravia
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    30. 8. 2007
Import date
    8. 8. 2012