VLF-EM data over Ishiagu northern outskirt of the Lower Benue Trough, Nigeria was evaluated to detect the extension of Pb-Zn mineralization. The study area is characterized by predominant conductive lineaments trending NW-SE direction and subordinate NE-SW direction. The conductivity contrast assessed indirectly from the evaluated current density and Fraser filtered data were used to delineate the potential zones of Pb-Zn mineralization. Strong electromagnetic induction due to high conductivity contrast was detected in the study area, though the northern extensions of these anomalies are of moderate response, signifying them deeper in the northern district. These zones are interpreted as the potential or inferred structurally controlled mineralized fracture zones with possible Pb-Zn mineralization worthy of further detailed test drilling to authenticate the extended mineralization. The results show the efficiency and reliability of VLF-EM technique for high resolution investigation at shallow depths and its potential for fast acquisition over large surfaces at mineralized zone scale without ground contact.
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