Record details

Title
    Geology and Re-Os molybdenite geochronology of the Kurišková U-Mo deposit (Western Carpathians, Slovakia)
Author
    Ackerman, Lukáš
    Bartalský, B.
    Demko, R.
    Erban, V.
    Kohút, M.
    Novotný, L.
    Trubač, J.
Language
    anglicky
Publication type
    článek v odborném periodiku
Source title - serial
    Journal of Geosciences
Vol./nr.
    Roč. 58, č. 3
Pages
    s. 271-282
Year
    2013
Notes
    Projekt: GA13-15390S, GA ČR3cav_un_auth*0292731
    Rozsah: 12 s. : P
Subject category
    Gemeric Unit
    genetic model
    molybdenite geochronology
    Re-Os
    U-Mo ore deposit
    Western Carpathians
Keyword
    Carpathians
    Deposit
    Geochronology
    Geology
    Kurišková
    Molybdenite
    Re-Os
    Slovakia
    U-Mo
    Western
Abstract (in english)
   The Kurišková U-Mo deposit from the Gemeric Unit of the Western Carpathians (Slovakia) is an example of polygenic deposit whose origin involved several events: endogenous, related to magmatism/volcanism, and exogenous, associated with precipitation from meteoric hydrothermal fluids in repeated tectonically-driven (fold & thrust and shear zones) channel ways penetrating the Permian Huta volcano-sedimentary complex. Sources of the U-Mo mineralization were multiple: (a) molybdenite was derived directly from juvenile hydrothermal fluids related to igneous activity, (b) the U mineralization formed from meteoric fluids circulating through altered and metamorphosed basaltic and rhyolitic volcanics intercalated by clastic sediments (sandstones and mudrocks), which interacted in an arid to humid climate with organic and carbonate substances within Permian basin. The principal ore-forming minerals are uraninite, coffinite, molybdenite and apatite with rare orthobrannerite and powellite.
   Two basic mineralization forms are present: (a) tabular - "stratiform like" and (b) stockwork intraformational and/or dislocation stockworks in shear zones. The Re-Os molybdenite dating confirmed crystallization from igneous source in Late Permian (Lopingian; 257.2 ? 3.0 Ma to 255.6 ? 3.7 Ma) for massive vein mineralization, whereas the superimposed U remobilization within shear zones occurred in the Triassic/Jurassic period. The Kurišková U-Mo deposit represents a polygenic endo/exogenous hydrothermal deposit of the Permian/Paleo-Alpine age, with metals sourced in Permian volcanosedimentary rocks that were leached by shear zone-related meteoric fluids.
Contributor
    AV ČR Brno, Geologický ústav
Contributor code
    AV ČR, GLÚ
Source format
    U
Import date
    23. 10. 2014