This presentation highlights how modern airborne natural electromagnetic total-field surveys are advancing mineral exploration by providing passive, broadband resistivity imaging from near surface to depths of 1–2 km across a wide range of geological environments. Using the MobileMT system, which combines three-component airborne magnetic measurements with stationary electric-field recordings, the method improves sensitivity to geoelectrical boundaries of any orientation, reduces topographic and tilt-related limitations, and supports robust inversion of subsurface resistivity structure. Field examples from the Stillwater West Ni-Cu-Co-PGE project in Montana and the Boumadine polymetallic deposit in Morocco demonstrate the ability of the method to detect both known and previously unresolved deep conductive targets, delineate mineralization-controlling structures and hydrothermal pathways, and outperform conventional airborne time-domain EM where greater depth of investigation is required. Overall, the presentation shows that broadband total-field AFMAG surveys can deliver geologically meaningful results that strengthen drill targeting and support the development of more reliable mineral systems models.
If you’d like to set up an individual or group online presentation, send a message and we’ll coordinate a time (info@expertgeophysics.com)
