Podrobnosti záznamu

Název
    The evolution of perpendicular linear fabrics in synkinematically emplaced tourmaline granite (central Moravia - Bohemian Massif)
Údaj o odpovědnosti
    Radek Melka, Karel Schulmann, Barbora Schulmannová, František Hrouda, Michal Lobkowicz
Autor
    Hrouda, František
    Lobkowicz, Michal
    Melka, Radek
    Schulmann, Karel
    Schulmannová, Barbora, 1963-
Jazyk
    anglicky
Zdrojový dokument - seriál
    Journal of structural geology
Svazek/č.
    Vol. 14, no. 5
Strany
    p. 605-620
Rok
    1992
Poznámky
    13 obr., 1 fot., 2 s.bibl.
    il.
    Zkr. název ser.: J. struct. Geol.
Předmětová skupina
    deformace
    křemen
    lineace
    ortorula
    složení peraluminické
    střih
    svratecké krystalinikum
    turmalín
    vrásnění variské
Geografické jméno
    ČR-Morava
    Nedvědice (Žďár nad Sázavou)
    Štěpánov nad Svratkou (Žďár nad Sázavou)
    Vír (Žďár nad Sázavou)
Klíčové slovo
    Bohemian
    Central
    Emplaced
    Evolution
    Fabrics
    Granite
    Linear
    Massif
    Moravia
    Perpendicular
    Synkinematically
    Tourmaline
Abstrakt (anglicky)
   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
Přispěvatel
    Česká geologická služba
Kód přispěvatele
    ČGS (UNM)
Zdrojový formát
    U
Datum vložení
    3. 10. 2007
Datum importu
    8. 8. 2012