Podrobnosti záznamu

Název
    The evolution of karst and caves in the Koněprusy Region (Bohemian Karst, Czech Republic). Part III, Collapse structures
Údaj o odpovědnosti
    Pavel Bosák
Další názvy
    Papers presented at 8th International Karstological School "CLASSICAL KARST - COLLAPSE DOLINES", Postojna, June 26-29th, 2000 (Variant.)
    Razvoj krasa in jam na ozemlju Koněprusy (Češki Kras, Češka), III. Del: Udorne strukture
Autor
    Bosák, Pavel, 1951-
Jazyk
    anglicky
Zdrojový dokument - seriál
    Acta carsologica
Svazek/č.
    Vol. 29, no. 2
Strany
    p. 35-50
Rok
    2000
Poznámky
    2 obr., 4 fot., 3 s.bibl.
    il.
    Zkr. název ser.: Acta carsol. (Ljubljana)
Předmětová skupina
    česká křídová pánev
    diskordance
    hydrotermální podmínky
    jeskyně
    karotáž
    kenozoikum
    krasová výplň
    křída-svrchní
    kvartér pražské plošiny
    paleokras
    řícení
    vltavo-berounský faciální vývoj
Geografické jméno
    ČR-Čechy
    Koněprusy (Beroun)
Klíčové slovo
    Bohemian
    Caves
    Collapse
    Czech
    Evolution
    III
    Karst
    Koněprusy
    Region
    Republic
    Structures
Abstrakt (anglicky)
   Vertical and subvertical pipse are circular to ovate in shape with diameters from 2-4 m up to tens of metres and with proven depth up to 82 m. Some of them terminate by horizontal cave levels at depth. Pipes are filled with complicated sedimentary sequences with clearly developed collapse structure. The fill is composed of pre-Cenomanian, Cenomanian-Turonian and Tertiary deposits. Internal structures of the fill indicate multiphase collapses. Cretaceous and pre-Cretaceous deposits are often subvertical with chaotic internal texture. In the centre of some of pipes, there are traces of younger collapses, most probably induced by continuing karstification and suffosion at depth. Tertiary deposits overlay the Cretaceous ones unconformably; they show gentler centripetal inclination, but in places they fill the central parts of collapsed fill.
   The origin of solution pipes is connected with hydrothermal activity most probably during Paleogene to Miocene, when the surface of limestones was still covered by slightly eroded cover of Upper Cretaceous platform sediments. Hydrothermal karst forms developed up to the surface of limestones as the piezometric level was situated within the Cretaceous cover. After the lost of buoyancy support of water, sedimentary cover started to move (collapse) down
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (UNM)
Zdrojový formát
    U
Datum vložení
    16. 8. 2007
Datum importu
    8. 8. 2012