Abstract
The study addressed the Geology and geological structures around Kwal-Kanke area around the Jos plateau. Three (3) rock types namely; Quaternary dolerite/basic rocks, aplo-pegmatitic granite gneiss and migmatite-gneiss were delineated. The quaternary dolerites and the aplo-pegmatitic granite are emplaced in form of dykes with lateral extent greater than 3km trending NW-SE and conforms to the trend of the fractures around Jiver area at the vicinity of the Sara-Fier Complex, implying that these dykes intruded pre-existing fractures and are most likely affected by similar tectonic episode. Geological studies around the central area of the study using the 40 vertical electrical soundings (VES) were carried out to determine the sub surface geology and its groundwater implications. From the study, weathered overburden of variable thickness of between 3-27m thick and major fractures which are of hydrogeological significance were intercepted on VES P28, P34, P35 and P38. The sub surface structures as depicted by the VES conform to the general NW-SE surface structural trend. Keywords: Geology, Geological structures, tectonic episode, VES, Hydrogeological implication
