Abstract
For the purpose of estimating the reliability and utilization of VLF (Very Low Frequency) investigation method, the measured results obtaiued by this method and the seismic method were compared to each other.
The abnormal zone, which is detected by the VLF method, that were thought as the fracture zone in fault and/or low resistant zone in metal deposit, was almost identical to the low velocity zone found by the seismic method.
Furthermore, it was found that the VLF method to detect the water content of fracture zone and cracky dyke.
