Record details

    Geochemical discrimination of metasedimentary sequences in the Krkonoše-Jizera Terrane (West Sudetes, Bohemian Massif): paleotectonic and stratigraphic constraints
    Crowley, Q. G.
    Floyd, P. A.
    Kachlík, V.
    Melzer, M.
    Nawakowski, C.
    Patočka, František
    Winchester, J. A.
Publication type
    článek v odborném periodiku
Source title - serial
    Geologica Carpathica
    Roč. 54, č. 5
    s. 267-280
    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
    tectonic setting
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.
    AV ČR Brno, Geologický ústav
Contributor code
    AV ČR, GLÚ
Source format
Import date
    8. 8. 2012