
%0 Journal Article
%A Gleeson, L.J. 
%A Thio, Y.-C. 
%T An application of downhole electrodes in IP exploration
%J Exploration Geophysics
%D 1976/08/01
%V 7
%N 2
%P 60-65
%K 
%R https://doi.org/10.1071/EG976060
%U https://www.publish.csiro.au/paper/EG976060 
%X A 45 m overburden layer having a conductivity 10 times that of the underlying host rock covers a sulphide body under study. It is estimated that this overburden will attenuate surface IP signal potentials to below 1/25 of that produced if the overburden is replaced by host material. By placing the pair of current electrodes down existing boreholes (75 m apart) at a depth of 1.6 times the thickness of the overburden this attenuation is completely overcome. Type curves showing diagnostic features are presented for traverses with potential electrodes remaining on the surface. 
