Full text loading...
This study outlines a geophysical workflow to improve imaging of the subsurface in the Akanvaara intrusion, a key brownfield target in Northern Finland for vanadium, chromium, and platinum-group elements (PGEs). Conducted under the SEMACRET project, the work focuses on the integration of airborne electromagnetic data with induced polarization effects, magnetic data and geological constraints to guide mineral exploration in a cost-effective and technically robust manner.
The integrated inversion revealed well-defined chargeable structures and resistivity contrasts that correlate with known stratigraphic units and mineralized zones. The combination of IP sensitivity to disseminated sulphides and magnetic imaging of magnetite and chromite-bearing layers proved effective in differentiating mineralization styles and improving subsurface resolution. This approach demonstrates the value of jointly modelling electromagnetic and magnetic data within a geologically constrained framework and highlights its potential as a scalable, cost-effective solution for targeting critical raw materials in layered mafic intrusions and similar settings.