This paper presents the result of the Airborne Electromagnetic Induced Polarization (AEMIP) 1D inversion using the Maximum Phase Angle (MPA) Cole-Cole model reparameterization for a Helicopter Time Domain (HTEM) survey in Quadrilátero Ferrífero area, MG, Brazil. The inversion was conducted for a set of four soundings points over the mineralized structure of Lamego Gold Mine. The results demonstrate good agreement with the drill-hole lithological description data and indicates two polarizable layers: one thin layer associated with the Aumineralized banded iron formation (BIF) and the other one associated with a thick graphite schist bellow the Aumineralization. Additionally, the AEMIP inversion results might suggest improvements in the underground resistivity model, which could not be achieved if the non-complex resistivity model is considered. Keywords: AEMIP, MPA Reparameterization, HTEM, Quadrilátero Ferrífero, Brazil


Article metrics loading...

Loading full text...

Full text loading...


  1. Auken, E., Christiansen, A., Kirkegaard, C., Fiandaca, G., Schamper, C., Behroozmand, A., Binley, A., Nielsen, E., Effersø, F., Christensen, N., Sørensen, K., Foged, N. & Vignoli, G.
    2015. An overview of a highly versatile forward and stable inverse algorithm for airborne, ground-based and borehole electromagnetic and electric data, Exploration Geophysics, 46(3), 223–235.
    [Google Scholar]
  2. Fiandaca, G., Madsen, L.M. & Maurya, P.K.
    2018. Re-parameterization of the Cole-Cole model for improved spectral inversion of induced polarization data, Near Surface Geophysics, 16, In Press, doi: 10.3997/1873-0604.2017065.
    [Google Scholar]
  3. FiandacaG., ChristiansenA. and AukenE.
    2015. Depth of investigation for multi-parameters inversions, Near Surface Geoscience 2015-21st European meeting of environmental and engineering geophysics, Extended Abstracts. Kang, S., Oldenburg, D. 2016. On recovering distributed IP information from inductive source time domain electromagnetic data, Geophysical Journal International, V. 207, I. 1, 174–196.
    [Google Scholar]
  4. Macnae, J.
    2016. Quantifying airborne induced polarization effects in helicopter time domain electromagnetics, Journal of Applied Geophysics, 135, 495–502.
    [Google Scholar]
  5. Martins, B. S., Lobato, L. M., Rosière, C. A., Hagemann, S. G., Santos, J. O. S., Villanova, F. L. S. P., Silva, R. C. F., Lemos, L. H. A.
    2016. The Archean BIF-hosted Lamego gold deposit, Rio das Velhas greenstone belt, Quadrilátero Ferrífero: Evidence for Cambrian structural modification of an Archean orogenic gold deposit. Ore Geology Reviews72, 963–988.
    [Google Scholar]
  6. Pelton, W., Ward, S., Hallof, P., Sill, W. & Nelson, P.
    1978. Mineral discrimination and removal of inductive coupling with multifrequency IP, Geophysics, 43(3), 588–609.
    [Google Scholar]
  7. Viezzoli, A., Kaminski, V., Fiandaca, G.
    2017. Modeling induced polarization effects in helicopter time domain electromagnetic data: Synthetic case studies, Geophysics, 82(2), E31–E50.
    [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