The magnetic properties of two mineralisation in the Vihanti region, western Finland, are studied. The study area is part of the 1.92–1.93 Ga Vihanti-Pyhäsalmi Belt that contains the most important volcanogenic massive sulphide deposits in Finland. The two mineralisations presented in this study, Lampinsaari and Kuuhkamo, show on aeromagnetic maps as high-amplitude anomalies that are not fully explained by the observed drill core susceptibilities. Constrained magnetic modelling and inversion are used for determining the intensity and direction of the remanent component. The results indicate that the strong magnetic anomalies are dominantly caused by remanent magnetisation that is mainly, but not completely, aligned with the current Earth’s field direction. The information can be applied in generating more reliable magnetic models for the region to enhance data integration for mineral exploration.


Article metrics loading...

Loading full text...

Full text loading...


  1. Airo, M.-L. & Säävuori, H.
    [2013] Petrophysical characteristics of Finnish bedrock. Concise handbook on the physical parameters of bedrock. Geological Survey of Finland, Report of Investigation 205.
    [Google Scholar]
  2. Austin, J. R. & Foss, C. A.
    [2014] The Paradox of Scale: Reconciling magnetic anomalies with rock magnetic properties for cost-effective mineral exploration. Journal of Applied Geophysics, 104, 121–133.
    [Google Scholar]
  3. Butler, R. F.
    [1992] Paleomagnetism: Magnetic Domains to Geological Terrains. Blackwell Scientific Publications.
    [Google Scholar]
  4. Clark, D. A.
    [2014] Methods for determining remanent and total magnetisations of magnetic sources – a review. Exploration Geophysics, 45(4), 271–304.
    [Google Scholar]
  5. Hautaniemi, H., Kurimo, M., Multala, J., Leväniemi, H. & Vironmäki, J.
    [2005] The “Three in One” aerogeophysical concept of GTK in 2004. In: Airo, M.-L. (Ed.)Aerogeophysics in Finland 1972–2004: Methods, System Characteristics and Applications. Geological Survey of Finland, Special Paper 39, 21–74.
    [Google Scholar]
  6. Heinonen, S., Heikkinen, P., Kousa, J., Kukkonen, I. T. & Snyder, D. B.
    [2013] Enhancing bedrock seismic images: Reprocessing of high resolution seismic reflection data from Vihanti, Finland. Journal of Applied Geophysics, 93, 1–11.
    [Google Scholar]
  7. Kukkonen, I. T., Heikkinen, P., Heinonen, S., Laitinen, J. & HIRE Working Group
    [2011] Reflection seismics in exploration for mineral deposits: initial results from the HIRE project. In: Nenonen, K. & Nurmi, P. (Eds.)Geosciences for Society, 125th Anniversary Volume. Geological Survey of Finland, Special Paper 49, 49–58.
    [Google Scholar]
  8. Mäki, T., Imaña, M., Kousa, J. & Luukas, J.
    [2015] The Vihanti-Pyhäsalmi VMS Belt. In: Maier, W. D., Lahtinen, R. & O’Brien, H. (eds.)Mineral Deposits in Finland. Elsevier, 507–530.
    [Google Scholar]
  9. Pratt, D. A., McKenzie, B. & White, T. S.
    [2014] Remote remanence estimation (RRE). Exploration Geophysics, 45(4), 314–323.
    [Google Scholar]
  10. Williams, N., de Wet, B., Kekana, S., Nielsen, S. & Broughton, D.
    [2016] Applying Advanced Gravity and Magnetic Inversion Methods to Expand the Platreef PGE-Ni-Cu Resource in the Bushveld Complex. ASEG 25th International Geophysical Conference and Exhibition, Extended Abstracts, 434–440.
    [Google Scholar]

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