Resistivity Prospecting Method
In this method, an electric current is generated and forced into the ground from widely spaced electrodes. The current flows through the earth to complete the circuit, and the amount of current that flows depends on the resistance the rock offers. This can be measured by probing the ground with pairs of electrodes connected to sensitive voltmeters.
A conductive orebody containing economic metallic sulphides will cause an anomalously low resistance. So, too, will a fault plain lined with grapliltic material, a barren sulphide or a fracture containing brackish solution. Results from this method must be interpreted using geological evidence.
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