Record details

Title
    On the interpretation of normal and inverse magnetic fabric in dikes
Author
    Cajz, Vladimír
    Chadima, Martin
    Hrouda, F.
Conference
    Paleo, Rock and Environmental Magnetism. Castle Meeting (11. : 22.06.2008-28.06.2008 : Bojnice, Slovensko)
Language
    anglicky
Publication type
    abstrakt
Source title - monograph
    Contributions to Geophysics & Geodesy
Pages
    Roč. 38, special issue (2008), s. 39-40
Notes
    Projekt: IAA300130612, GA AV ČR
    Překlad názvu: Příspěvek k interpretaci normální a inverzní magnetické stavby v žilách
    Rozsah: 2 s. : WWW
    Výzkumný záměr: CEZ:AV0Z30130516
Subject category
    anisotropy of magnetic remanence
    anisotropy of magnetic susceptibility
    lattice preferred orientation
Keyword
    Dikes
    Fabric
    Interpretation
    Inverse
    Magnetic
    Normal
Abstract (in english)
   Recent studies of igneous rocks indicate that the predominant occurrence of normal/inverse fabric in dikes may either reflect the presence of multi-domain (MD)/single-domain (SD) grains or it may result from different orientation mechanisms of magnetic minerals in magmas of different viscosities. In order to address this problem, we studied magnetic fabric of selected dikes associated with the SW-NE trending Eger Graben (NW Bohemian Massif). Normal magnetic fabric with magnetic foliations and subhorizontal magnetic lineations both parallel to the dike margins was found in bostonite and trachybasalt dikes. Inverse magnetic fabric with magnetic lineations and magnetic foliations perpendicular to the dike margins was found in camptonite dikes.
Contributor
    AV ČR Brno, Geologický ústav
Contributor code
    AV ČR, GLÚ
Source format
    U
Import date
    8. 8. 2012