Record details

Title
    The geochemical correlation of the East Krkonoše Complex metabasites (West Sudetes, Czech Republic and Poland) - relation to the Cambrian-Ordovician northern Gondwana breakup: A review
Statement of responsibility
    František Patočka, Witold Smulikowski
Other titles
    Pre-Variscan Terrane Analysis of "Gondwanan Europe" (Variant.)
Author
    Patočka, František
    Smulikowski, Witold
Language
    anglicky
Source title - serial
    Acta Universitatis Carolinae. Geologica
Vol./nr.
    Vol. 42, no. 3-4
Pages
    s. 485-488
Year
    1998
Notes
    2 obr., 26 bibl.
    il.
    Zkr. název ser.: Acta Univ. Carol., Geol.
Subject group
    Gondwana
    kambrium
    krkonošsko-jizerské krystalinikum
    metabazit
    ordovik
    petrogeneze
Geographical name
    ČR-Čechy
    Polsko - jihozápad
    Svoboda nad Úpou (Trutnov)
    Žacléř (Trutnov)
Keyword
    Breakup
    Cambrian-Ordovician
    Complex
    Correlation
    Czech
    East
    Geochemical
    Gondwana
    Krkonoše
    Metabasites
    Northern
    Poland
    Relation
    Republic
    Review
    Sudetes
    West
Abstract (in english)
   The low- to medium-grade metabasites are abundant in the Early Palaeozoic East Krkonoše Complex (EKC) which is located at the Czech/Polish frontier. The correlation of the lithostratigraphic units defined in the Czech (southern) and Polish (central and northern) parts of the EKC is based on geochemistry of the metabasites: (1) The greenschists and greenstones of the EKC southern part are correlated with the amphibolites forming small- to medium-sized bodies in the EKC central and northern parts. These metabasites are interpreted as metamorphosed tholeiitic to alkaline WPBs. (2) The largest mafic body, dominating in the Polish part of the EKC, has a southern promontory dismembered along the eastern margin of the EKC Czech part. The constitutent rocks of this mafic body are mostly N- and E-MORB-like blueschists, greenschists to greenstones, and amphibolites. The (1) and (2) rock associations are dated close to Cambrian/Ordovician boundary.
   The similarity in protolith ages and geochemical diversity of the EKC metabasite associations suggest the intracontinental rift development followed by incipient sea-floor spreading in the Early Palaeozoic relams of the West Sudetes. These processes are considered to be related to the northern Gondwana large-scale break-up at the beginning of Palaeozoic
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    17. 8. 2007
Import date
    8. 8. 2012