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    Porphyry deposits of the Urals: geological framework and metallogeny

    Access Status
    Fulltext not available
    Authors
    Plotinskaya, O.
    Grabezhev, A.
    Tessalina, Svetlana
    Seltman, R.
    Groznova, E.
    Abramov, S.
    Date
    2017
    Type
    Journal Article
    
    Metadata
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    Citation
    Plotinskaya, O. and Grabezhev, A. and Tessalina, S. and Seltman, R. and Groznova, E. and Abramov, S. 2017. Porphyry deposits of the Urals: geological framework and metallogeny. Ore Geology Reviews. 85: pp. 153-173.
    Source Title
    Ore Geology Reviews
    DOI
    10.1016/j.oregeorev.2016.07.002
    ISSN
    1872-7360
    School
    Department of Applied Geology
    URI
    http://hdl.handle.net/20.500.11937/5576
    Collection
    • Curtin Research Publications
    Abstract

    Most of the Cu (± Mo,Au) porphyry and porphyry-related deposits of the Urals are located in the Tagil-Magnitogorsk, East-Uralian Volcanic and Trans-Uralian volcanic arc megaterranes. They are related to subduction zones of different ages: (1) Silurian westward subduction: Cu-porphyry deposits of the Birgilda-Tomino ore cluster (Birgilda, Tomino, and Kalinovskoe) and the Zeleny Dol Cu-porphyry deposit; (2) Devonian Magnitogorsk eastward subduction and the subsequent collision with the East European plate: deposits and occurrences are located in the Tagil (skarn-porphyry Gumeshevskoe etc.) and Magnitogorsk terranes (Cu-porphyry Salavat and Voznesenskoe, Mo-porphyry Verkhne-Uralskoe, Au-porphyry Yubileinoe etc.), and probably in the Alapaevsk-Techa terrane (occurrences of the Alapayevsk-Sukhoy Log cluster); (3) Late-Devonian to Carboniferous subduction: deposits located in the Trans-Uralian megaterrane. This includes Late-Devonian to Early Carboniferous Mikheevskoe Cu-porphyry and Tarutino Cu skarn-porphyry, Carboniferous deposits of the Alexandrov volcanic arc terrane (Bataly, Varvarinskoe) and Early Carboniferous deposits formed dew to eastward subduction under the Kazakh continent (Benkala, etc.).(4) Continent-continent collision in Late Carboniferous produced the Talitsa Mo-porphyry deposit located in the East Uralian megaterrane. Porphyry mineralization of the Magnitogorsk megaterrane shows an evolving relationship from gabbro-diorite and quartz diorite in the Middle Devonian (Gumeshevskoe, Salavat, Voznesenskoe) to granodiorite-plagiogranodiorite in the Late Devonian (Yubileinoe Au-porphyry) and finally to granodiorite in the Carboniferous (Talitsa Mo-porphyry) with a progressive increase in total REE, Rb and Sr contents. This corresponds to the evolution of the Magnitogorsk terrane from a volcanic arc which gave place to an arc-continent collision in the Famennian.

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