Record details

    Coexisting Miocene Alkaline Volcanic Series Associated with the Cheb-Domažlice Graben (W Bohemia): Geochemical Characteristics
    Balogh, K.
    Lloyd, F. E.
    Štěpánková, Jana
    Ulrych, Jaromír
Publication type
    článek v odborném periodiku
Source title - serial
    Geologica Carpathica
    Roč. 54, č. 1
    s. 53-64
    Projekt: GA205/99/0907, GA ČR
    Projekt: T 014961, Hungarian Academy of Sciences Foundation, HU
    Rozsah: 12 s.
    Výzkumný záměr: CEZ:AV0Z3013912
Subject category
    Miocene volkanism
    W Bohemia
Abstract (in english)
   The Middle to Late Miocene alkaline volcanism of W Bohemia is associated with the uplift of the NE flank of the Cheb-Domažlice Graben. Two coexisting volcanic series have been recognised there: (i) weakly alkaline series and (ii) strongly alkaline series. Modelling of the partial melting showed that nephelinite and basanite magma formed by different degree of partial melting of the magma source with the amphibole, garnet, olivine and clinopyroxene in the residuum. The mantle source was probably represented by lithospheric mantle metasomatised by the plume-like material. Evolution of the stongly alkaline series is limited in extent and rather unclear. The weakly alkaline series is well developed and its evolution can be modeled by fractionation of olivine, clinopyroxene, Fe-Ti oxide and small proportion of plagioclase and in late stages by alkali feldspar, Fe-Ti oxide, clinopyroxene and apatite.
    AV ČR Brno, Geologický ústav
Contributor code
    AV ČR, GLÚ
Source format
Import date
    8. 8. 2012