Podrobnosti záznamu

Název
    Sediment provenance and dispersal in a deep marine foreland basin: the Lower Carboniferous Culm basin, Czech Republic
Údaj o odpovědnosti
    A.J. Hartley, Jiří Otava
Autor
    Hartley, A. J.
    Otava, Jiří, 1950-
Jazyk
    anglicky
Zdrojový dokument - seriál
    Journal of the Geological society
Svazek/č.
    Vol. 158, no. 1
Strany
    p. 137-150
Rok
    2001
Poznámky
    11 obr., 1 fot., 1 tab., 46 bibl.
    il.
    Zkr. název ser.: J. Geol. Soc. (Bath)
Předmětová skupina
    devon
    facie
    granáty
    karbon-spodní
    konglomerát
    molasa
    moravskoslezské prevariské paleozoikum
    oblast snosová
    paleoproudění
    pískovce
    proces synsedimentární
    těžké minerály
    turbidit
    vrásnění variské
Geografické jméno
    Budišov nad Budišovkou (Opava)
    ČR-Morava
    Hlinsko (Přerov)
    Jakubčovice (Opava, Opava)
    Luleč (Vyškov)
    Stará Ves (Nový Jičín)
    Světlá Hora (Bruntál)
Klíčové slovo
    Basin
    Carboniferous
    Culm
    Czech
    Deep
    Dispersal
    Foreland
    Lower
    Marine
    Provenance
    Republic
    Sediment
Abstrakt (anglicky)
   The Lower Carboniferous Culm Basin of the Czech Republic represents the most easterly and southerly part of the European variscan foreland basin system. The NNE-SSW-trending basin is exposed along the eastern flank of the Bohemian Massif. It contains up to 7.5 km of deep marine sediment deposited as an axial turbidite system sourced from south/southwest of the basin. heavy mineral data and clast types indicate that for much of the Viseán, sediment was sourced from a predominantly low-grade metamorphic terrane and Visean limestones. In the latest Visean, a progressive change in source material is recorded by an increase in high-grade metamorphic detritus. Studies of Variscan nappe pile emplacement along the eastern flank of the Bohemian Massif allow an assessment of the relationship between basin development and nappe emplacement. Basin initiation coincided with underthrusting of high grade metamorphic (Moldanubian) nappe at 340 Ma.
   Sedimentation was synchronous with nappe emplacement throughout the Viseán which resulted in uplift and erosion of a low grade metamorphic terrane. Moldanubian nappes were exhumed at approximately 330 Ma when high grade metamorphic detritus entered the basin. Two phases of northward-directed sediment progradation are recognized. Sediment progradation is considered to be related to changes in drainage basin size and/or climatic fluctuations within the Variscan Orogen, since sediment is inferred to have been supplied to the basin axially rather than laterally and subsidence curves show no significant change in subsidence rates
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (UNM)
Zdrojový formát
    U
Datum vložení
    25. 3. 2008
Datum importu
    8. 8. 2012