Record details

Title
    Sediment provenance and dispersal in a deep marine foreland basin: the Lower Carboniferous Culm basin, Czech Republic
Statement of responsibility
    A.J. Hartley, Jiří Otava
Author
    Hartley, A. J.
    Otava, Jiří, 1950-
Language
    anglicky
Source title - serial
    Journal of the Geological society
Vol./nr.
    Vol. 158, no. 1
Pages
    p. 137-150
Year
    2001
Notes
    11 obr., 1 fot., 1 tab., 46 bibl.
    il.
    Zkr. název ser.: J. Geol. Soc. (Bath)
Subject group
    devon
    facie
    granáty
    karbon-spodní
    konglomerát
    molasa
    moravskoslezské prevariské paleozoikum
    oblast snosová
    paleoproudění
    pískovce
    proces synsedimentární
    těžké minerály
    turbidit
    vrásnění variské
Geographical name
    Budišov nad Budišovkou (Opava)
    ČR-Morava
    Hlinsko (Přerov)
    Jakubčovice (Opava, Opava)
    Luleč (Vyškov)
    Stará Ves (Nový Jičín)
    Světlá Hora (Bruntál)
Keyword
    Basin
    Carboniferous
    Culm
    Czech
    Deep
    Dispersal
    Foreland
    Lower
    Marine
    Provenance
    Republic
    Sediment
Abstract (in english)
   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
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    25. 3. 2008
Import date
    8. 8. 2012