Podrobnosti záznamu

Název
    The Late Cretaceous Nysa Graben: implications fro Mesozoic-Cenozoic fault-block tectonics of the Sudetes
Údaj o odpovědnosti
    Jerzy Don
Autor
    Don, Jerzy
Jazyk
    anglicky
Zdrojový dokument - seriál
    Zeitschrift für geologische Wissenschaften
Svazek/č.
    Vol. 24, no. 3-4
Strany
    p. 317-324
Rok
    1996
Poznámky
    2 obr., 21 bibl.
    Anglické resumé
    Zkr. název ser.: Z. geol. Wiss.
Předmětová skupina
    bystřický faciální vývoj
    česká křídová pánev
    flyš
    konglomerát
    křída-svrchní
    orlicko-sněžnické krystalinikum
    povrch erozní
    příkop
    tektonika zlomová
Geografické jméno
    Česká republika
    Králíky (Ústí nad Orlicí)
    Polsko - jihozápad
    Štíty (Šumperk)
Klíčové slovo
    Cretaceous
    Fault-block
    Fro
    Graben
    Implications
    Late
    Mesozoic-Cenozoic
    Nysa
    Sudetes
    Tectonics
Abstrakt (anglicky)
   Main ? of the tectonic evolution of the Nysa Graben are presented using geological mapping interpretations and facies analysis results. Following more than 150 M.A. tectonic quiescence, a gradually eastward transgression Cenomanian-Turonian sea encroached onto strongly levelled topography, reaching up to the east Sudetic island. The extensive base C erosional surface defines an important reference horizon (whose importance, however, is as yet underestimated) for studies dealing with later fault-block movements in the Sudetes. At end of Turonian a N-S elongated trough (Fig.1) began to form between Klodzko (Poland) and Štity (Czech Republic). The Idzików Clay settling down in the trough attained 600 m in thickness in the Middle Coaniacian.
   In the late Coniacian and Santonian, flysch sedimentation was dominant in the trough and its deposits interfingered with westerly prograding beds of the Idzików Conglomerate (Fig.2), characterized by abundant material coming from the Snieznik metamorphic massif which emerged at that time along the line Waliszow-Kraliky-Štity. Parallel to this line, between Bystrzyca Klodzka and Dlugopole, there formed a monocline (Fig.1), closing the Nysa Graben from the west. The cumulative thickness of Cretaceous sediments in the graben achieved about 1100 m and almost three times exceeded the thickness of Cenomanian-Turonian deposits of the Intra-Sudetic Basin. The first stage of the Nysa Graben formation took place in tensional regime aloong the axis of an uplifting gentle arch of the Orlica Snieznik Dome. In the late Turonian these movements led to regression of the Late Cretaceous sea toward the graben and in the Santonian they resulted in with-drawing the sea waters to the fore-Carpathian basin.
   
   The successive compressional event was associated with the formation of Laramide thrust faults, some of which represent boundary faults closing the Nysa Graben from the NE (against the Krowiarki metamorphics) and from the SW (against the Zabřeh metamorphics). The thrust faults developed in a regime
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (UNM)
Zdrojový formát
    U
Datum vložení
    20. 2. 2008
Datum importu
    8. 8. 2012