oa Exploration capabilities of airborne broadband natural electromagnetic fields measurements

The latest development in the AFMAG family, MobileMT airborne electromagnetic technology based on natural fields, has been used in commercial and test surveys in different geoelectric conditions and for different exploration problems. The presented results are from surveys in a uranium mineralization district, over a gold bearing orogen structure, and in a greenstone belt with the bounded iron formation type of gold mineralization demonstrate wide capabilities of the technique in subsurface exploration which include:

• wide depth range of investigation and deep resistivity imaging even in the presence of conductive overburden;
• mapping geoelectric boundaries from steeply dipping to stratiform horizontal directions;
• targeting discrete resistivity heterogeneity;
• differentiation in high and low resistivity background ranges.