f Fracture Detection in Hard Rocks Using Combined Resistivity Profiling and Square Array Techniques

It is well known that occurrence of groundwater in hard rocks is very much different from that in granular media, being highly irregular due to variable subsurface geology and hydrogeology. The accumulation and movement of water in such an area, are governed by primary and secondary porosity (mainly due to weathering, jointing and fracturing). It is clearly known that the potential water may reside preferentially in those regions where either weathering zone attains considerable thickness or where the fracturing, jointing is intense.