Record details

Title
    Projevy předsvrchnokřídového krasovění (karbon-cenoman) v Barrandienu (Česká republika)
Statement of responsibility
    Pavel Bosák
Other titles
    Pre-Upper Cretaceous Karstification (Carboniferous-Cenomanian) in the Barrandian (Czech Republic)
Author
    Bosák, Pavel, 1951-
Language
    česky
Source title - serial
    Český kras
Vol./nr.
    Roč. 24
Pages
    s. 56-59
Year
    1998
Notes
    31 bibl.
    Anglické resumé
    Zkr. název ser.: Čes. Kras
Subject group
    Barrandien
    cenoman
    jura
    karbon
    paleoklimatologie
    paleokras
    paleoreliéf
    perm
    trias
Geographical name
    Český kras
    ČR-Čechy
Keyword
    Barrandienu
    Česká
    Karbon-cenoman
    Krasovění
    Projevy
    Předsvrchnokřídového
    Republika
Abstract (in english)
   The evidence of pre-Cenomanian karstification is very scarce. During carboniferous, the area was covered at least by 1.5 km thick molasse coal-bearing sequences. They were eroded during Triassic-Jurassic time, before the marine ingression in Kelloway time. Young-Cimmerian movements of the Alpine orogeny brought new energy to the relief. After the marine regression in Kimmeridge time, there were originated deep karst forms. Their depth reached more than 120 m, indicat (1) deeply located piezometric level or (2) that such forms represent upwelling routes of deep karst circulation paths. Observations in the Velkolom Čertovy schody Quarry-East discovered upward blind chiimneys with the diameter of several metres filled by grey lutitic sediments of freshwater Cenomanian. They are interpreted as the first evidence of pre-Cenomanian endokarst comparable with blind shafts at the base of epikarst zone
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    13. 2. 2008
Import date
    8. 8. 2012