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    High-resolution multicomponent hardrock seismic imaging of mineral deposits and their host rock structures

    Access Status
    Open access via publisher
    Authors
    Malehmir, A.
    Wang, S.
    Lamminen, J.
    Bastani, M.
    Juhlin, Christopher
    Vaittinen, K.
    Dynesius, L.
    Palm, H.
    Date
    2014
    Type
    Conference Paper
    
    Metadata
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    Citation
    Malehmir, A. and Wang, S. and Lamminen, J. and Bastani, M. and Juhlin, C. and Vaittinen, K. and Dynesius, L. et al. 2014. High-resolution multicomponent hardrock seismic imaging of mineral deposits and their host rock structures, in Proceedings of the 76th EAGE Conference and Exhibition 2014: Experience the Energy, Jun 16-19 2014, pp. 82-84. Amsterdam: European Association of Geoscientists & Engineers.
    Source Title
    76th EAGE Conference and Exhibition 2014, Workshops
    DOI
    10.3997/2214-4609.20140509
    ISBN
    9781632666956
    School
    Department of Exploration Geophysics
    URI
    http://hdl.handle.net/20.500.11937/36009
    Collection
    • Curtin Research Publications
    Abstract

    Although applied in the past, there are only a few cases demonstrating the advantages of multicomponent seismic data for mineral exploration. To illustrate this, a test survey using sixty 3C-digital sensors, spaced between 2 to 4 m and assembled in a 160 m long landstreamer, was carried out to provide information on shallow structures hosting mineralization and also a magnetic lineament with an unknown origin. The survey, totally about 1.3 km long, was complemented by Radio MagnetoTelluric (RMT) measurements. Although an explosive source was used to generate the seismic signal, the seismic data show good quality for all the three components. Supported by the RMT results, clear reflections are observed in the horizontal component data at about 25 m depth, one of them steeply dipping, likely associated with the magnetic lineament. Field static corrections were well estimated thanks to the close shot and receiver spacing and the broadband frequency content of the data. This study demonstrates that multicomponent seismic data can be useful for providing information on shallow structures and linking them to the surface geology. The vertical component data, however, show deeper penetration and better image the crystalline basement and its undulated/faulted surface at about 50 m depth.

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