Record details

    The source of Cenozoic volkanism in the České středohoří Mts., Bohemian Massif
    Balogh, K.
    Svobodová, Jana
    Ulrych, Jaromír
Publication type
    článek v odborném periodiku
Source title - serial
    Neues Jahrbuch für Mineralogie. Abhandlungen
    Roč. 177, č. 2
    s. 133-162
    Projekt: 014961, OTKA Foundation, HU
    Projekt: IAA3111601, GA AV ČR
    Rozsah: 30 s.
Subject category
    effusive basaltic rock
    K-Ar dating
    Sr-Nd isotopes
Abstract (in english)
   Based on stratigraphic model of the effusive basaltic rock superposition in the České středohoří Mts. The geochemical characteristics of individual formations were established. Trachybasaltic rocks only substantially differ from mutually geochemically indistinguishable basanitic rock group. Geochemical characteristics of the Lower Fm. rocks indicate influence of more different sources on the parental magma. From trace element and isotopic data and modelling of magma evolution during assimilation-fractional crystallization process implies, that the rocks of Lower Fm. and Uppermost Fm. formed from more primitive magma derived from depleted mantle and influenced by HIMU-OIB plume component. The rocks of Upper Fm. represent the more evolved magma that formed from the more primitive magma by the AFC process. According the K-Ar dating the volcanic activity in the main formations overlapped and it major activity is concentrated in between 22 and 27 Ma.
    AV ČR Brno, Geologický ústav
Contributor code
    AV ČR, GLÚ
Source format
Import date
    8. 8. 2012