Record details

Title
    Fabric transpositions in granite plutons - an insight from non-scaled analogue modelling
Author
    Kratinová, Zuzana
    Kusbach, V.
    Machek, Matěj
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Journal of the Geological Society of India
Vol./nr.
    Roč. 75, č. 1
Pages
    s. 267-277
Year
    2010
Notes
    Projekt: KJB300120702, GA AV ČR3cav_un_auth*0229083
    Rozsah: 11 s.
    Výzkumný záměr: CEZ:AV0Z30120515
Subject category
    AMS
    analogue modelling
    granite intrusions
    magmatic fabrics
    rheology
Keyword
    Analogue
    Fabric
    Granite
    Insight
    Modelling
    Non-scaled
    Plutons
    Transpositions
Abstract (in english)
   Investigations on a set of experimental models of highly viscous intrusions were carried out in order to study the internal strain pattern during vertical ascent and emplacement of granite intrusions. The strain pattern was determined by means of anisotropy of magnetic susceptibility resulting from the orientation of magnetite particles in a liquid plaster medium. The modelled intrusions show distinct fabrics reflecting the flow of a rheologically complex, non-Newtonian material. During the vertical growth of the intrusion, constrictional vertical fabrics are transposed into flattening fabrics, and along with the development of low-intensity fabric domains are passively transported upwards. Vertical growth takes place along subvertical thrust shear zones that satisfactorily explain the discordant magmatic fabrics in granites along intrusion sides.
Contributor
    AV ČR Brno, Geofyzikální ústav
Contributor code
    AV ČR, GFÚ
Source format
    U
Import date
    9. 12. 2013