Počet záznamů: 1

Magnetic properties of high-Ti basaltic rocks from the Krušné hory/Erzgebirge Mts. (Bohemia/Saxony), and their relation to mineral chemistry

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    0340715 - GLU-S 2010 RIV CZ eng J - Článek v odborném periodiku
    Schnabl, Petr - Novák, Jiří Karel - Cajz, Vladimír - Lang, Miloš - Balogh, K. - Pécskay, Z. - Chadima, Martin - Šlechta, Stanislav - Kohout, Tomáš - Pruner, Petr - Ulrych, Jaromír
    Magnetic properties of high-Ti basaltic rocks from the Krušné hory/Erzgebirge Mts. (Bohemia/Saxony), and their relation to mineral chemistry.
    Studia geophysica et geodaetica. Roč. 54, č. 1 (2010), s. 77-94 ISSN 0039-3169
    Grant CEP: GA AV ČR IAA300130706
    Výzkumný záměr: CEZ:AV0Z30130516
    Klíčová slova: high-Ti basaltic rocks * magnetic petrology * thermomagnetic experiments * Curie temperature variation * field-dependent susceptibility * Ohře/Eger Rift
    Kód oboru RIV: DE - Zemský magnetismus, geodézie, geografie
    Impakt faktor: 1.123, rok: 2010

    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.
    Trvalý link: http://hdl.handle.net/11104/0183902