Počet záznamů: 1  

Genetic stratigraphy of Coniacian deltaic deposits of the northwestern part of the Bohemian Cretaceous Basin

  1. 1.
    0438408 - GFÚ 2015 RIV DE eng J - Článek v odborném periodiku
    Nádaskay, R. - Uličný, David
    Genetic stratigraphy of Coniacian deltaic deposits of the northwestern part of the Bohemian Cretaceous Basin.
    Zeitschrift der Deutschen Gesellschaft fuer Geowissenschaften. Roč. 165, č. 4 (2014), s. 547-575. ISSN 1860-1804
    Institucionální podpora: RVO:67985530
    Klíčová slova: genetic stratigraphy * well log * Bohemian Cretaceous Basin
    Kód oboru RIV: DB - Geologie a mineralogie
    Impakt faktor: 0.569, rok: 2014

    Based on a combination of outcrop and subsurface data, this paper presents a description and interpretation of principal lithofacies and regional-scale depositional geometries in sandstones of early to middle Coniacian age in the northwestern part of the Bohemian Cretaceous Basin. A depositional model of nearshore deposition presented here interprets the depositional system as dominated by coarse-grained deltas that prograded from the faulted northern basin margin, the present-day Lužice (Lausitz) Fault Zone. The deltaic systems were the primary loci of clastic sediment deposition upon entering the basin, but the deposits of the delta fronts as well as part of the prodeltaic facies were further reworked by vigorous tidal currents, in particular in shallow-water settings. Steep, Gilbert-type foresets formed mainly in delta fronts that prograded into deeper water, reaching up to c. 100 m in some units. This depositional model is largely analogous to that developed by Uličný (2001) in other parts of the basin, with the exception of very large-scale dunes that locally occurred in the present study area.
    Trvalý link: http://hdl.handle.net/11104/0241807

     
     
Počet záznamů: 1  

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