Podrobnosti záznamu

    AMS record of brittle dilation, viscous-stretching and gravity-driven magma ascent in area of magma-rich crustal extension (Vosges Mts., NE France)
    Edel, J.-B.
    Kratinová, Zuzana
    Schulmann, K.
    Tabaud, A.-S.
Typ dokumentu
    článek v odborném periodiku
Zdrojový dokument - seriál
    International Journal of Earth Sciences
    Roč. 101, č. 3
    s. 803-817
    Projekt: KJB300120702, GA AV ČR3cav_un_auth*0229083
    Rozsah: 15 s. : P
    Výzkumný záměr: CEZ:AV0Z30120515
Předmětová kategorie
    anisotropy of magnetic susceptibility
    crustal extension
    magmatic fabrics
Klíčové slovo
Abstrakt (anglicky)
   Orogenic compression-related fabrics were reworked during regional extensional deformation in a large anatectic crustal domain of the Central Vosges (NE France). The extension was first accommodated by brittle dilation affecting vertically anisotropic high-grade rocks associated with emplacement of subvertical granitic sheets. The AMS fabric of granitoids is consistent with highly partitioned transtensional deformation marked by alternations of flat and steep foliations and development of orthogonal lineations. This deformation passes to top-to-the-southwest ductile shearing expressed in southerly migmatitic middle crust. The AMS fabric revealed moderately west-dipping foliations bearing subhorizontal NNW-SSE-trending lineations and predominantly plane strain to prolate shapes. This fabric pattern is interpreted as a viscous response of stretched partially molten crust during continuous ductile extension.
    AV ČR Brno, Geofyzikální ústav
Kód přispěvatele
    AV ČR, GFÚ
Zdrojový formát
Datum importu
    9. 12. 2013