Podrobnosti záznamu

Název
    Chemostratigraphic determination of equivalent strata and formations in Bohemian Cretaceous Basin
Údaj o odpovědnosti
    Zdeněk Štaffen
Další názvy
    Chemostratigrafické stanovení ekvivalence vrstev a souvrství české křídové pánve
Autor
    Štaffen, Zdeněk
Jazyk
    anglicky
Zdrojový dokument - seriál
    Acta montana. Series A: Geodynamics
Svazek/č.
    No. 21
Strany
    p. 77-109
Rok
    125
Poznámky
    18 obr., 2 s. bibl.
    il.
    Zkr. název ser.: Acta montana
Předmětová skupina
    chemostratigrafie
    česká křídová pánev
    geologie regionální
    karbonáty
    křemen
    křída-svrchní
    litostratigrafie
    minerály jílové
Geografické jméno
    ČR-Čechy
Klíčové slovo
    Basin
    Bohemian
    Chemostratigraphic
    Cretaceous
    Determination
    Equivalent
    Formations
    Strata
Abstrakt (anglicky)
   A systematic petrological investigation of sediments has recently been carried out in the Bohemian Cretaceous Basin. Qualitative and quantitative determination of chemical and mineral composition of lithological types in drilling logs was an integral part of the study. Late Cretaceous sediments from explorative boreholes were studied in areas showing different facies development. The best preserved stratigraphic range served as a criterion for selection of samples to be examined. Specific changes in composition of relevant sediments enable to divide local formations into chemostratigraphic units of lower order. The chemical and mineral composition was found different and also specific to the given unit. Consequently, the sedimentary units can be correlated within the entire basin according to their compositional equivalence. The correlation enables to establish equivalent strata and formations in areas showing completely different facies development.
   The composition of individual units, particularly that of CaCO3, was found to be independent on changes in facies. The chemostratigraphic method may be a useful tool for revision of stratigraphic discrepancies in classification of the Ohře and the remaining facies areas of the Bohemian Cretaceous Basin. The results of chemostratigraphic correlation can also be applied to neighboring areas of the platform covered with Late Cretaceous sediments
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (UNM)
Zdrojový formát
    U
Datum vložení
    21. 3. 2008
Datum importu
    8. 8. 2012