Record details

Title
    Geochemistry and composition of the Middle Devonian Srbsko Formation in Barrandian Area, Bohemian Massif: A trench or fore-arc strike-slip basin fill with material from volcanic arc of continental margin?
Author
    Hladil, Jindřich
    Strnad, L.
Conference
    Meeting of the Czech Tectonic Studies Group (6. : 03.05.2001-06.05.2001 : Donovaly - Nízké Tatry, Slovensko)
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Geolines
Vol./nr.
    Roč. 13, -
Pages
    s. 111-114
Year
    2001
Notes
    Projekt: KSK3012103, GA AV ČR
    Rozsah: 4 s.
    Výzkumný záměr: CEZ:AV0Z3013912
Subject category
    Geochemistry
    Srbsko Formation of the Barrandian area
    tectonic setting
Keyword
    Arc
    Area
    Barrandian
    Basin
    Bohemian
    Composition
    Continental
    Devonian
    Fill
    Fore-arc
    Formation
    Geochemistry
    Margin
    Massif
    Material
    Middle
    Srbsko
    Strike-slip
    Trench
    Volcanic
Abstract (in english)
   An extreme sedimentary starving combined with dissolution characterises the Kačák Member, which covers the limestones of depths of several hundreds of meters. The siliciclastic sediments of Srbsko Fm. contained pelagic carbonate ooze, which was significantly dissolved. Distal turbiditite siltstones/sandstones of Roblín Member contain, beside quartz, also small lithic and feldspar grains. The TM contain garnet and zircon, pyroxene, tourmaline, apatite, Fe-Ti oxides, spinel, Fe-sulphides, and rarely Mg-olivine and Mg-biotite. Long prismatic, dipyramidal and oval zircons were found. The least mobile elements were used for tectonic-setting proxies (e.g., La-Sc-Th, Th-Sc-Zr/10 or Th-Co-Zr/10), where CIA-ACM settings were indicated. The pull-down of the seafloor into the abyss was followed by shedding of continental material, then, the tectonic thickening and shallowing suggest formation of accretionary prism.
Contributor
    AV ČR Brno, Geologický ústav
Contributor code
    AV ČR, GLÚ
Source format
    U
Import date
    8. 8. 2012