Record details

Title
    Dynamics of Mesozoic pre-orogenic rifting in the Western Carpathians
Statement of responsibility
    Dušan Plašienka
Other titles
    5th Workshop of Alpine Geological Studies- Modern Alpine Geology : from Surface to Depth (Variant.)
Author
    Plašienka, Dušan, 1953-
Language
    anglicky
Source title - serial
    Mitteilungen der Österreichischen geologischen Gesellschaft
Vol./nr.
    Vol. 94
Pages
    p. 79-98
Year
    2001
Notes
    7 obr.
    il.
    Obsahuje bibliografické odkazy
    Zkr. název ser.: Mitt. Österr. geol. Gesell.
Classfication no.
    55(1)
    551.2
Conspectus category
    55
Subject group
    cyklus sedimentační
    geologie dynamická
    geologie regionální
    jura
    křída
    pánev sedimentační
    trias
    Západní Karpaty
    zóna riftová
Geographical name
    ČR-Morava
    Slovensko
Keyword
    Carpathians
    Dynamics
    Mesozoic
    Pre-orogenic
    Rifting
    Western
Abstract (in english)
   The West Carpathian Mesozoic sedimentary successions provide evidence about important pre-orogenic rifting events that generated subsiding basinal domains separated by submarine and/or subaerial highs. Since the geometry of rift-related fault structures can seldom be studied directly, the rifting process is reconstructed by interpretation of relative bathymetry/subsidence curves of individual sedimentary successions.
   Five rifting phases, which represent climaxes of a long-termed extensional tectonic regime, can be distinguished: (1) the latest Permian - Early Triassic phase which was completed by the Anisian break-up of the Meliata Ocean; (2) the Early Liassic phase which was characterized by overall lithospheric stretching and wide rifting; (3) the restricted Late Liassic phase which manifested itself by extensional block tilting; (4) the Middle Jurassic asymmetric rifting which was terminated by the break-up of the South Penninic-Vahic ocean in the late Bajocian - early Bathonian and (5) the Early Cretaceous asymmetric rifting that led to the break-up of the North Penninic-Magura Ocean. The passive, asymmetric rifting mode is inferred in this study from distinctly different subsidence and/or uplift patterns of opposite margins of extended basinal domains.
   Further it is assumed that solely asymmetric rifting resulted in the break-up of the European continental lithosphere to generate the Penninic oceanic domains. Since rifting in the foreland of the lower plate occurred contemporaneously with advancement and shortening of the compressional erogenic wedge prograding from the hinterland Meliata suture, a common geodynamic scenario for simultaneous foreland extension and hinterland compression during one orogenic cycle is proposed in this study
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    7. 12. 2006
Import date
    8. 8. 2012