Record details

Title
    Geochemical discrimination of metasedimentary sequences in the Krkonoše-Jizera Terrane (West Sudetes, Bohemian Massif): paleotectonic and stratigraphic constraints
Author
    Crowley, Q. G.
    Floyd, P. A.
    Kachlík, V.
    Melzer, M.
    Nawakowski, C.
    Patočka, František
    Winchester, J. A.
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Geologica Carpathica
Vol./nr.
    Roč. 54, č. 5
Pages
    s. 267-280
Year
    2003
Notes
    Projekt: IAA3111102, GA AV ČR
    Projekt: PACE TMR Network ERBFMRXCT97-0136, CZ-XE, XE
    Rozsah: 14 s.
    Univerzita Karlova:J13/98:113100005
    Výzkumný záměr: CEZ:AV0Z3013912
Subject category
    geochemistry
    metasediments
    tectonic setting
Keyword
    Bohemian
    Constraints
    Discrimination
    Geochemical
    Krkonoše-Jizera
    Massif
    Metasedimentary
    Paleotectonic
    Sequences
    Stratigraphic
    Sudetes
    Terrane
    West
Abstract (in english)
   The geochemical analyses of metasedimentary units of the Krkonoše Mountains provided evidence about similar material composition and also ages of the Radčice and Poniklá Groups (Cambrian, Ordovician to Silurian-Devonian equivalents predominate). These rocks must be put together into one group only (proposed name - Vrchlabí Group, mostly Paleozoic). The Vrchlabí Group differs from the older Machnín Group (mostly Proterozoic), but also from the Paleozoic Velká Úpa Group. The Paleozoic series differs in many characteristics, but relatively low Th/Sc and Ce/Yb ratios are particularly significant in the Vrchlabí Group. The geochemistry of metasediments reflects the complex evolution of the West Sudetes, which started with Cambrian and Ordovician intracontinental rifting, subsequent sea-floor spreading and formation of large basins, to end with accumulation and bounded collision of segments of arcs and micro-plates.
Contributor
    AV ČR Brno, Geologický ústav
Contributor code
    AV ČR, GLÚ
Source format
    U
Import date
    8. 8. 2012