Information on the resistive properties of overburden and bedrock, and on the thickness of the overburden was obtained for a regional study of the geology. The results show the water-table at a depth of 12-46 metres with groundwater salinity approximating that of sea-water in most areas. The depth to bedrock varies from 26 to 89 metres. The conductive environment is absent at one location, possibly because of very shallow bedrock precluding the presence of groundwater. The survey penetrated well into bedrock. Any sulphide conductors of other than trivial size and conductivity within 50 metres or more of bedrock surface should have been detected. Five anomalies are identified which could be caused by bedrock conductors. None of them give any indication of being caused by a strong conductor.