Record details

Title
    Recurrent Cenozoic volcanic activity in the Bohemian Massif (Czech Republic)
Author
    Adamovič, Jiří
    Balogh, K.
    Dostal, J.
    Hegner, E.
    Jelínek, E.
    Špaček, Petr
    Ulrych, Jaromír
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Lithos
Vol./nr.
    Roč. 123, 1/4
Pages
    s. 133-144
Year
    2011
Notes
    Projekt: GA205/09/1170, GA ČR, CZ3cav_un_auth*0252833
    Projekt: IAA300130902, GA AV ČR, CZ3cav_un_auth*0252838
    Rozsah: 12 s. : WWW
    Výzkumný záměr: CEZ:AV0Z30120515
    Výzkumný záměr: CEZ:AV0Z30130516
Subject category
    alkaline volcanism
    Bohemian Massif
    Cenozoic
    mantle
    paleostress fields
    rift
Keyword
    Activity
    Bohemian
    Cenozoic
    Czech
    Massif
    Recurrent
    Republic
    Volcanic
Abstract (in english)
   Cenozoic anorogenic volcanism of the Bohemian Massif is an integral part of the Central European Volcanic Province. Three main volcanic periods can be distinguished based on K-Ar data and known paleostress fields: (i) pre-rift (79-49 Ma), (ii) syn-rift (42-16 Ma) and (iii) late-rift (16-0.3 Ma), with the youngest period further subdivided into three episodes. The dominant mafic rock types of all periods are of nephelinite - basanite / tephrite composition. The exceptions are suites of ultramafic rocks of the pre-rift period and of the final episode of the late-rift period. The most voluminous are volcanic rocks of the syn-rift period occurring in the Ohře Rift Graben. The initial Sr-Nd ratios of the mafic volcanic rocks of the Bohemian Massif are characteristic of magmas derived from a sub-lithospheric mantle source. The isotopic ratios resemble those of the HIMU mantle source.
Contributor
    AV ČR Brno, Geofyzikální ústav
Contributor code
    AV ČR, GFÚ
Source format
    U
Import date
    9. 12. 2013