What is it about?
At the Canadian Malartic mine site, the resistivity at 25 metres below the surface (away from overburden effects) is correlated with the structural complexity, which itself is correlated with the gold content. The chargeability is also related to the gold content in structurally complex areas. There is also some interesting examples of anisotropy, where the resistivity, but not the chargeability depends on the traverse direction.
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Why is it important?
This paper shows that resistivity, induced polarization methods and airborne electromagnetic methods can be used as a proxy for gold exploration.
Perspectives
The anisotropy of resistivity is a physical property that can be measured with 3D resistivity surveys and we should see this being mapped more int he future.
Prof Richard S Smith
Laurentian University
Read the Original
This page is a summary of: Structural complexity inferred from anisotropic resistivity: Example from airborne EM and compilation of historical resistivity/induced polarization data from the gold-rich Canadian Malartic district, Québec, Canada, Geophysics, March 2019, Society of Exploration Geophysicists,
DOI: 10.1190/geo2018-0444.1.
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