Record details

    The evolution of perpendicular linear fabrics in synkinematically emplaced tourmaline granite (central Moravia - Bohemian Massif)
Statement of responsibility
    Radek Melka, Karel Schulmann, Barbora Schulmannová, František Hrouda, Michal Lobkowicz
    Hrouda, František
    Lobkowicz, Michal
    Melka, Radek
    Schulmann, Karel
    Schulmannová, Barbora, 1963-
Source title - serial
    Journal of structural geology
    Vol. 14, no. 5
    p. 605-620
    13 obr., 1 fot., 2 s.bibl.
    Zkr. název ser.: J. struct. Geol.
Subject group
    složení peraluminické
    svratecké krystalinikum
    vrásnění variské
Geographical name
    Nedvědice (Žďár nad Sázavou)
    Štěpánov nad Svratkou (Žďár nad Sázavou)
    Vír (Žďár nad Sázavou)
Abstract (in english)
   Sheet of leucocratic peraluminous tourmaline granite were synkinematically emplaced into metasediments of the Svratka Crystalline during the Variscan orogeny. The granite was deformed under high-temperature conditions close to the solidus, as indicated by quartz microstructures and the presence of prism (c) slide in quartz. Decrease in the temperature of deformation causing orthogneissification of the granite is documented by transition from prism (c) to prism (c) and basal (a) glide operating in quartz grains. Two mutually perpendicular stretching lineations originated during high-temperature deformation of the granite. Detailed three-dimensional analysis of tourmaline preferred-orientations underlining both lineations has been performed and the distributions have been compared with theoretical predictions of Jeffery abd March for rotation of rigid linear markers. The origin of mutually perpendicular linear fabrics is discussed on the basis of numerical models.
   Transpression, considered as a combination of northwestard shearing accompanied by shortening across and lengthening along the shear plane, is proposed to explain the perpendicular linear fabrics observed
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
Entered date
    3. 10. 2007
Import date
    8. 8. 2012