Podrobnosti záznamu

Název
    Geochemistry of the Drahotín and Mutěnín intrusions, West Bohemian shear zone, Bohemian massif: contrasting evolution of mantle-derived melts
Autor
    Ackerman, Lukáš
    Krňanská, Martina
    Siebel, Wolfgang
    Strnad, Ladislav
Jazyk
    anglicky
Typ dokumentu
    článek v periodiku
Zdrojový dokument - seriál
    Mineralogy and Petrology
Svazek/č.
    Roč. 99, č. 3-4
Strany
    15
Rok
    2010
Výraz tezauru
    assimilation
    fractional crystallization
    gabbro
    Teplá-Barrandian
Klíčové slovo
    Bohemian
    Contrasting
    Drahotín
    Evolution
    Geochemistry
    Intrusions
    Mantle-derived
    Massif
    Melts
    Mutěnín
    Shear
    West
    Zone
Abstrakt (anglicky)
   In western Bohemia, the Drahotín and Mutěnín intrusions show different origins and evolutions. Parental magmas of the Drahotín intrusion were derived predominantly from enriched mantle sources, and the melts have undergone a significant degree of assimilation-fractional crystallization during their ascent and/or emplacement into the Earth`s crust. In contrast, the compositional variation of the complex Mutěnín intrusion cannot be explained by similar processes as in the case of Drahotín intrusion, but more likely reflects the involvement of several parental magmas. The gabbronorite was derived from a depleted mantle source, whereas the diorite/syenite stem from a mixed mantle-crust reservoir. The contrasting evolution of the Drahotín and Mutěnín intrusions may be due to their melt derivation and magma emplacement under different tectonothermal regimes at different times during Variscan orogenesis.
Přispěvatel
    UK Praha, Přírodovědecká fakulta
Kód přispěvatele
    UK, PřF
Zdrojový formát
    R
Datum importu
    8. 8. 2012