1887

Abstract

Summary

A high-resolution reflection seismic survey, using conventional cabled- and wireless-recorders, was carried out in the Blötberget mining area of Bergslagen in central Sweden, to provide information about the depth and lateral extend of a known iron-oxide mineralization. The mineralized bodies dip towards the southeast in a moderate angle however their depth and lateral extents are not well defined. Following a successful pilot experiment using a seismic landstreamer that confirmed the delineation of the mineralization using seismic methods, two seismic profiles, crossing each other almost perpendicularly were acquired. Preliminary results show several strong sets of reflections and possibly extending deeper than the known depth of 850 m, further to the southeast. Downhole physical properties from several boreholes in the vicinity of the seismic profile support the use of reflection seismic method, as it can be an efficient and important tool for mineral exploration, due to both good penetration depth and high-resolution images.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201702092
2017-09-03
2020-08-06
Loading full text...

Full text loading...

References

  1. Place, J., Malehmir, A, Högdahl, K., Juhlin, C. and Persson, K.
    [2015] Seismic characterization of the Grängesberg iron deposit and its mining-induced structures, central Sweden. Interpretation, 3, SY41–SY56.
    [Google Scholar]
  2. Malehmir, A., Durrheim, R., Bellefleur, G., Urosevic, M., Juhlin, C., WhiteD.J., Milkereit, B. and Campbell, G.
    [2012] Seismic methods in mineral exploration and mine planning: A general overview of past and present case histories and a look into the future. Geophysics, 77, WC173–WC190.
    [Google Scholar]
  3. Malehmir, A., Maries, G., Backstrom, E., Schon, M. and Marsden, P.
    [2017] Deep targeting an iron-oxide ore body using a seismic landstreamer and a 500-kg drop hammer source. 79th EAGE Conference & Exhibition, Paris, France, June 2017.
    [Google Scholar]
  4. Maries, G., Malehmir, A. and Backstrom, E.
    [2016] Downhole physical properties measurements supporting iron-oxide deep exploration and mining in Blötberget, Sweden. Near Surface Geoscience, Geophysics on Mineral Exploration and Mining, Barcelona, Spain, September 2016. doi: 10.3997/2214‑4609.201602092
    https://doi.org/10.3997/2214-4609.201602092 [Google Scholar]
  5. Stephens, M.B., Ripa, M., Lundström, I., Persson, L., Bergman, T., Ahl, M., Wahlgren, C.-H., Persson, P.-O. and Wickström, L.
    [2009] Synthesis of the bedrock geology in the Bergslagen region, Fennoscandian Shield, south-central Sweden. Report of Sveriges Geologiska Undersökning Ba 58, 259.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201702092
Loading
/content/papers/10.3997/2214-4609.201702092
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error