Thirty three vertical electrical soundings (VES) were conducted around Gombe and environs, employing Schlumberger array with a maximum electrode separation of AB/2 = 200m to determine locations favorable for sitting boreholes. The data obtained were interpreted using the partial curve matching technique and software (offix) for resistivity data interpretation. From the result, it was found that twenty one of the VES points are three layers while twelve are four layers. The first layers have thicknesses ranging from 0.8m to 16.1m, the second and third layer have thicknesses ranging from 0.994m to 149m and 11.7m to 108.2m, respectively while the fourth layer had thickness that extended beyond the probing depth. A correlation of the curves with existing lithologic log from boreholes in the study area suggests that the major lithologic units penetrated by the sounding curves were laterite, clay, shale, sandstone and sandy clays. The sandy clay and sandstone constitute the aquifer zones with resistivity range of 28 ohm-m to 84 ohm-m for clay, 240 ohm-m to 501 ohm-m for sandstone, 967 ohm-m to 1008 ohm-m for sandy clay. Others are 2069 ohm-m to 9607 ohm-m for the calcareous and the laterite units and 17456 0hm-m for the compacted sands. The direction of groundwater flow in the area was found to be northwest-southeast, average fitting error, pH and conductivity are 6.138 percent, 7.02 and 72.16ohm cmP -1P respectively. @ JASEM Resistivity survey was employed in this work to determine locations suitable for borehole construction because it can favorably locate water-bearing layer. The area is bounded by Latitude
An interpretation of high resolution aeromagnetic data was carried out to provide new information about the study area. Located between latitude 10˚30'N and 11˚00'N and longitude 8˚30'E and 9˚00'E, the interpretation revealed previously unknown folds and magnetic anomaly with a signature that is similar to those associated with ring complexes in the study area but without the surface manifestation that is associated with the complexes. Qualitatively interpreted as unexposed ring complex, the magnetic anomaly is underlain by cross-over of major lineaments; implying presence of weak zone that probably allowed the volcanic eruption that initiated the emplacement of the source of the anomaly. A depth that ranges from outcrop to 1200 m and from outcrop to 1800 m is respectively suggested for the unexposed ring complex and folds by the Euler deconvolution results.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.