Record details

Title
    Granitoids of the Kladruby pluton and the Sedmihoří stock (Western Bohemia) : geochemistry and Geochronology
Statement of responsibility
    Jakub Voves, Jiří Bendl, Emil Jelínek, Mohamed Wahby Ali Bik
Author
    Ali Bik, Mohamed Wahby
    Bendl, Jiří
    Jelínek, Emil, 1943-
    Voves, Jakub
Language
    anglicky
Source title - serial
    Acta Universitatis Carolinae, Geologica
Vol./nr.
    Vol. 41, no. 2
Pages
    p. 81-89
Year
    1997
Notes
    1 obr., 8 diagr., 4 tab., 27 bibl.
    Zkr. název ser.: Acta Univ. Carol., Geol.
Subject group
    biotit
    bohemikum
    chemismus hornin
    datování Rb/Sr
    granitoidy
    granodiorit
    monzogranit
    pluton
    prvky hlavní
    prvky stopové
    vzácné zeminy
    západočeský pluton
Geographical name
    ČR-Čechy
    Kladruby (Tachov)
Keyword
    Bohemia
    Geochemistry
    Geochronology
    Granitoids
    Kladruby
    Pluton
    Sedmihoří
    Stock
    Western
Abstract (in english)
   The granitoids of the Kladruby pluton and the Sedmihoří stock have different geochemical features consistent with different protolith and age. The biotite granite and granodiorite of the Kladruby pluton resemble I-type granitoids. The whole-rock geochemistry corresponds best to granites of active continental margins, genetically associated with subduction regime. In contrast, the Sedmihoří stock granites may be considered a typical crustal S-types plotting into the field of syncollisional granites (syn-COLG). The Rb-Sr isochron of five whole rock samples of the Kladruby pluton gave the age of 436 36 Ma (87Sr/86Sr ir*0.70488). Three whole rock samples of the Sedmihoří stock plot on an isochron of 313 50 Ma (87Sr/86Sr ir*0.72131). The intrusion of Kladruby massif probably took place in a region near the continental margin. The Sedmihoří stock, age and other geochemical characteristics argue for S-type granite formed through melting of a crustal material
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    18. 2. 2008
Import date
    8. 8. 2012