AEMIP inversion for gold exploration using maximum phase angle parameterization - Case in Quadrilátero Ferrífero Area, Brazil

M. A. Couto, G. Fiandaca, P. K. Maurya, E. Auken, A. V. Christiansen, J. L. Porsani

Research output: Contribution to conferencePaper at conferencepeer-review

Abstract

This paper presents the results of the Airborne Electromagnetic Induced Polarization (AEMIP) 1D Laterally Constrained Inversion (LCI) using the Maximum Phase Angle (MPA) re-parameterization of the Cole-Cole model for an AeroTEMHD survey in Quadrilátero Ferrífero area, MG, Brazil. The MPA LCI's were conducted using a robust inversion scheme and its results were compared with the usual Resisitivity-Only (RO) LCI's for gold mineralization zone in Lamego Mine structure. The MPA results seems to present a better recovery of the resistivity model in comparison with the RO usual approach, better agreement with the borehole lithological data and good correlation with previous conductive sheet modeling. An important chargeable body was identified in the MPA model, suggesting the definition of the carbonaceous units in Lamego Mine, an important chemical trap and structural control for gold mineralization in this area.

Original languageEnglish
Publication statusPublished - 2019
Event25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019 - The Hague, Netherlands
Duration: 8 Sep 201912 Sep 2019

Conference

Conference25th European Meeting of Environmental and Engineering Geophysics, Held at Near Surface Geoscience Conference and Exhibition 2019, NSG 2019
Country/TerritoryNetherlands
CityThe Hague
Period8/09/1912/09/19

Programme Area

  • Programme Area 2: Water Resources

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