Record details

Title
    Magnetic properties of high-Ti basaltic rocks from the Krušné hory/Erzgebirge Mts. (Bohemia/Saxony), and their relation to mineral chemistry
Author
    Balogh, K.
    Cajz, Vladimír
    Chadima, Martin
    Kohout, Tomáš
    Lang, Miloš
    Novák, Jiří Karel
    Pécskay, Z.
    Pruner, Petr
    Schnabl, Petr
    Šlechta, Stanislav
    Ulrych, Jaromír
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Studia geophysica et geodaetica
Vol./nr.
    Roč. 54, č. 1
Pages
    s. 77-94
Year
    2010
Notes
    Magnetické vlastnosti bazaltoidů s vysokým obsahem Ti z Krušných hor/Erzgebirge (Čechy/Sasko) a jejich vztah k chemismu minerálů
    Projekt: IAA300130706, GA AV ČR
    Rozsah: 18 s. : WWW
    Výzkumný záměr: CEZ:AV0Z30130516
Subject category
    Curie temperature variation
    field-dependent susceptibility
    high-Ti basaltic rocks
    magnetic petrology
    Ohře/Eger Rift
    thermomagnetic experiments
Keyword
    Basaltic
    Bohemia/Saxony
    Chemistry
    High-Ti
    Hory/Erzgebirge
    Krušné
    Magnetic
    Mineral
    Mts
    Properties
    Relation
    Rocks
Abstract (in english)
   Cenozoic Ti-rich basaltic bodies (3.5 -5.2 wt% TiO2 in whole rock analyses) are grouped in the broader vicinity of the Loučná-Oberwiesenthal volcanic centre and spinel group minerals (mainly titanomagnetite population with 12.7-20.1 wt.% TiO2) play a major role in rock magnetism. Recrystallized dusty Ti-magnetite from decomposed olivine and symplected magnetite-diopside occur rarely. Magnetomineralogic methods can detect the TiO2 content in titanomagnetite series using variations in Currie temperature, field-dependent susceptibility, and variations in the IRM spectra. Understanding of the factors that determine magnetization intensities within the target area is essential for reliable interpretation of magnetic anomalies and subsurface geology.
Contributor
    AV ČR Brno, Geologický ústav
Contributor code
    AV ČR, GLÚ
Source format
    U
Import date
    8. 8. 2012