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    Crustal 3-D geometry of the Kristineberg area (Sweden) with implications on VMS deposits

    Access Status
    Open access via publisher
    Authors
    Skyttä, P.
    Bauer, T.
    Hermansson, T.
    Dehghannejad, M.
    Juhlin, Christopher
    García Juanatey, M.
    Hübert, J.
    Weihed, P.
    Date
    2013
    Type
    Journal Article
    
    Metadata
    Show full item record
    Citation
    Skyttä, P. and Bauer, T. and Hermansson, T. and Dehghannejad, M. and Juhlin, C. and García Juanatey, M. and Hübert, J. et al. 2013. Crustal 3-D geometry of the Kristineberg area (Sweden) with implications on VMS deposits. Solid Earth. 4 (2): pp. 387-404.
    Source Title
    Solid Earth
    DOI
    10.5194/se-4-387-2013
    ISSN
    1869-9510
    School
    Department of Exploration Geophysics
    URI
    http://hdl.handle.net/20.500.11937/14694
    Collection
    • Curtin Research Publications
    Abstract

    Structural analysis of the Palaeoproterozoic volcanogenic massive sulfide (VMS) hosting Kristineberg area, Sweden, constrained by existing magnetotelluric (MT) and seismic reflection data, reveals that the complex geometry characterized by non-cylindrical antiformal structures is due to transpression along the termination of a major high-strain zone. Similar orientations of the host rock deformation fabrics and the VMS ore lenses indicate that the present-day geometry of the complex VMS deposits in the Kristineberg area may be attributed to tectonic transposition. The tectonic transposition was dominantly controlled by reverse shearing and related upright to overturned folding, with increasing contribution of strike-slip shearing and sub-horizontal flow towards greater crustal depths. Furthermore, the northerly dip of the previously recognized subsurface crustal reflector within the Kristineberg area is attributed to formation of crustal compartments with opposite polarities within the scale of the whole Skellefte district. The resulting structural framework of the main geological units is visualized in a 3-D model which is available as a 3-D PDF document through the publication website.

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