Record details

Title
    Similarities between the Teufelsberg intrusion (southern Teplá-Barrandian, Bohemian Massif) and the massif-type anorthosites
Statement of responsibility
    Giselher Propach
Author
    Propach, Giselher
Language
    anglicky
Source title - serial
    Neues Jahrbuch für Geologie und Paläontologie. Abhandlungen
Vol./nr.
    Vol. 228, no. 1
Pages
    p. 123-151
Year
    2003
Notes
    7 obr., 3 tab., 4 s. bibl.
    il.
    Zkr. název ser.: Neu. Jb. Geol. Paläont., Abh.
Subject group
    anortozit
    chemismus hornin
    diorit
    gabro
    geochronologie
    kambrium-spodní
    kdyňský masiv
    krystalizace frakcionovaná
    petrogeneze
    plagioklasy
    tavení
    vrásnění kadomské
Geographical name
    ČR-Čechy
    Kdyně (Domažlice)
    Orlovice (Domažlice)
    SRN-Bayern
    Všeruby (Domažlice)
Keyword
    Anorthosites
    Bohemian
    Intrusion
    Massif
    Massif-type
    Similarities
    Southern
    Teplá-Barrandian
    Teufelsberg
Abstract (in english)
   Two associations of basic to intermediate intrusive rocks are present within the Bavarian part of the Kdyně igneous complex. Cumulus rocks (ultramafic to leucogabbroic) prevail in the intrusions of Všeruby and Neukirchen. The parental melt was high-alumina basaltic. The rock association of the Teufelsberg intrusion bears features of the massive type anorthosites. Leucogabbros and leucodiorites are present instead of true anorthosites. Presence of ferrodiorites, scarcity of ultramafic rocks, and local enrichment of ilmenite and apatite are additional features of the massif-type anorthosites. The composition of the assumed parental magma is tholeiitic and different from the parental melts of massif anorthosites. There are indications that high-alumina basaltic magmas also contributed to the rock association of the Teufelsberg intrusion. The gabbros and leucogabbros are cumulates of plagioclase, clinopyroxene, and olivine.
   Melting and assimilation of plagioclase has modified the composition of some of the diorites. Crystal fractionation played a minor role in the development of the rock series. The magmatism of the Kdyně intrusive complex was triggered by the rifting of Gondwana in the Lower Cambrian
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    26. 9. 2007
Import date
    8. 8. 2012