Record details

    Nové poznatky o charakteru a genezi podzemních krasových forem v Českém krasu a dalších oblastech bez soustředěných ponorů v České republice
Statement of responsibility
    Jiří Bruthans, Ondřej Zeman
Other titles
    New data on character and evolution of underground karst forms in the Bohemian Karst and other areas with diffuse recharge mode in the Czech Republic
    Bruthans, Jiří
    Zeman, Ondřej
Source title - serial
    Český kras
    Roč. 27
    s. 21-29
    3 obr., 2 tab., 2 s.bibl.
    Anglické resumé
    Zkr. název ser.: Čes. Kras
Subject group
    kvartér pražské plošiny
    pražská pánev
    terciér Českého masivu
Geographical name
    Česká republika
    Český kras
Abstract (in english)
   The extensive speleological and hydrogeological research of the Bohemian Karst was carried out in 1994 to 2000. Results of this study were compared with other karst areas in the Czech Republic and also with universal rules of speleogenesis (Ford and Ewers 1978; Palmer 1991 etc.). The results of recent research support the idea, that there are three main processes involved in speleogenesis of Bohemian Karst and other areas with diffuse recharge mode in the Czech Republic: (1) diffuse recharge from superficial streams; (2) diffuse recharge from the Cretaceous deposits (only Bohemian Karst), and (3) flood-flow injections. These processes are still active on some places in the area. Other processes have only minor and/or local importnace. (a) corrosion caused by thermal water and mixing waters and (b) concentrated recharge (ponors).
   Three types of recharge into karst environment could be recognised in the karst areas, each in connected with certain pattern of sediment transport via recently active cave systems: (1) streams are sinking in blind termination of valley or large depressions; (2) concentrated recharge into hidden ponors in the riverbed, and (3) water from the streams is diffusely passing across sediments in the riverbed. Ground water flow and embryonic karstification in the Bohemian Karst and other karst regions in the Czech Republic can reach into depth of several hundred meters below the regional base of erosion. In the case of caves developed by karst processes without carrying the clastic load, there is no rule accounting for the erosion base in speleogenesis. Therefore there is no reason to connect such type of karst with terrace levels or erosion bases
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    25. 3. 2008
Import date
    8. 8. 2012