Record details

    Anticlockwise and clockwise rotations of the Eastern Variscides accommodated by dextral lithospheric wrenching: palaeomagnetic and structural evidence
Statement of responsibility
    Jean Bernard Edel, Karel Schulmann, František V. Holub
    Edel, Jean Bernard
    Holub, František V.
    Schulmann, Karel
Source title - serial
    Journal of the Geological society
    Vol. 160, no. 2
    p. 209-218
    4 obr., 2 tab., 2 s. bibl.
    Zkr. název ser.: J. Geol. Soc. (Bath)
Subject group
    posun horizontální na vertikálním zlomu
    středočeský pluton
    vlastnosti magnetické
    vrásnění hercynské
    zkrácení kůry
    železnohorský pluton
Geographical name
    Česká republika
Abstract (in english)
   New palaeomagnetic data from Lower Carboniferous granitoids of the orogenic root of the eastern Variscan belt (Moldanubian domain) show a polyphase palaeomagnetic record. Comparison of the data with existing palaeomagnetic measurements from Lower Palaeozoic sequences of the Bohemian Massif demonstrates a Carboniferous remagnetization of these latter units. All the data presented suggest that the Saxothuringian basement, the Moldanubian orogenic root system as well as the eastern Neoproterozoic Brunovistulian basement were already assembled during the Early Carboniferous. The whole Variscan belt subsequently rotated in a clockwise direction during Mid-Late Carboniferous times. Structural and geochronological data indicate that this rotation was accompanied by large-scale dextral wrenching along NW-SE-trending lithospheric faults. In a first stage, the blocks limited by wrench-faults rotated anticlockwise in bookshelf manner.
   The data presented rule out the existing model of oroclinal bending of the Rhenohercynian zone at the eastern termination of the Variscan belt
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    24. 10. 2007
Import date
    8. 8. 2012