Record details

Title
    Evidence for non-coaxiality of ferrimagnetic and paramagnetic fabrics, developed during magma flow and cooling in a thick mafic dyke
Author
    Henry, B.
    Hirt, A. M.
    Machek, Matěj
    Madureira, P.
    Marques, F. O.
    Roxerová, Zuzana
    Silva, P. F.
    Vratislav, S.
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Tectonophysics
Vol./nr.
    Roč. 629, August
Pages
    s. 155-164
Year
    2014
Notes
    doplnit grant po dohodě s autorem
    Rozsah: 10 s.
Subject category
    dyke emplacement
    fabrics
    ferrimagnetic
    microstructures
    paramagnetic
    stress field
Keyword
    Cooling
    Developed
    During
    Dyke
    Evidence
    Fabrics
    Ferrimagnetic
    Flow
    Mafic
    Magma
    Non-coaxiality
    Paramagnetic
    Thick
Abstract (in english)
   A detailed analysis of fabrics of the chilled margin of a thick dolerite dyke (Foum Zguid dyke, Southern Morocco) was performed in order to better understand the development of sub-fabrics during dyke emplacement and cooling. AMS data were complemented with measurements of paramagnetic and ferrimagnetic fabrics (measured with high field torque magnetometer), neutron texture and microstructural analyses. The ferrimagnetic and AMS fabrics are similar, indicating that the ferrimagneticminerals dominate the AMS signal. The paramagnetic fabric is different from the previous ones. Based on the crystallization timing of the different mineralogical phases, the paramagnetic fabric appears related to the upward flow, while the ferrimagnetic fabric rather reflects the late-stage of dyke emplacement and cooling stresses.
Contributor
    AV ČR Brno, Geofyzikální ústav
Contributor code
    AV ČR, GFÚ
Source format
    U
Import date
    23. 10. 2014