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    Identifying mineral prospectivity using 3D magnetotelluric, potential field and geological data in the east Kimberley, Australia

    Access Status
    Fulltext not available
    Authors
    Lindsay, M.
    Spratt, J.
    Occhipinti, S.
    Aitken, A.
    Dentith, M.
    Hollis, Julie
    Tyler, I.
    Date
    2018
    Type
    Journal Article
    
    Metadata
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    Citation
    Lindsay, M. and Spratt, J. and Occhipinti, S. and Aitken, A. and Dentith, M. and Hollis, J. and Tyler, I. 2018. Identifying mineral prospectivity using 3D magnetotelluric, potential field and geological data in the east Kimberley, Australia. Geological Society Special Publication. 453 (1): pp. 247-268.
    Source Title
    Geological Society Special Publication
    DOI
    10.1144/SP453.8
    ISSN
    0305-8719
    School
    School of Earth and Planetary Sciences (EPS)
    URI
    http://hdl.handle.net/20.500.11937/72757
    Collection
    • Curtin Research Publications
    Abstract

    © 2018 The Author(s). An integrated interpretation of the east Kimberley, northern Western Australia was completed to determine mineral prospectivity, and was centred on a portion of a magnetotelluric (MT) survey conducted across the entire Kimberley Craton and surrounding orogens. A structural geophysical interpretation used potential field data, and was constrained by geological field observations, petrophysics, remote sensing and understanding of the tectonic history of the region. Potential field forward modelling located along the same survey traverse as the MT data allowed comparison between the two datasets and their interpretations revealing interesting features suggesting the presence of large-scale structures, the presence of mineralization deep in the crust, and where mineralization may be at or near the surface. The King River Fault is shown from both the MT inversion and potential field modelling as a crustal-scale, west-dipping structure, the footwall of which bounds the western side of a large resistive body. A conductive anomaly is also located on the hanging wall of the King River Fault. Our assessment suggests that graphitic rocks, most likely with some sulphide content, contribute to the strength of this anomaly, and highlights the potential of the east Kimberley to host graphite and base metal deposits.

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