This research examined the levels of heavy metals in boreholes and hand dug wells within Kashere town and environs. The sampling was carried out at 10 locations in Kashere area of Gombe state. Five samples were collected from boreholes and five from hand dug wells and analyzed for some heavy metals (copper, cadmium, chromium, lead, nickel and manganese) using Atomic Absorption Spectrophotometer (AAS). The result shows that there is high concentration of most of the heavy metals in the groundwater samples with Pb, Ni, Cr, and Cd having mean concentrations above the maximum limit set by W.H.O. It was recommended that a systematic treatment of heavy metals concentration in groundwater sources in the study area be carried out regularly either through; Chemical precipitation, ion exchange or Reverse osmosis.

The Riruwai Complex constitutes one of the Younger Granite Complexes in Nigeria within the Niger-Nigeria anorogenic belt province, located about 140Km south of Kano. It provides one of the finest examples of the complete cycle of anorogenicmagmaticactivities in Nigerian Province, and consists of alkaline volcanic and plutonic rocks ranging from pyroxene bearing porphyries, rhyolites and comendites, to riebeckite granites. The aeromagnetic intensity field anomaly of the Riruwai Younger Granite ring complex has been studied and analyzed to establish the tectonic nature of the complex and its influence on the geodynamics. The application of second derivative both in the x-and y-directions; (d 2 U / dx 2) and (d 2 U / dy 2) filters respectively, and Laplacian and polymonial regression analysis revealed a general NE-SW regional anomaly pattern within the Complex and along which the Riruwai Younger Granite is emplaced. Very low magnetic anomaly is associated with the biotite granites and the riebeckite bearing granites of the Complex. The very low anomaly is deemed to be attributed to highly evolved, late formed low density residual fluid rich magmatic material that were emplaced as granites as a separate magmatic phase, after an initial eruption of not so evolved volcanic phase. The general tectonic stress field traversing the Complex coincides with the NE-SW structural fabric within the Basement Complex of the region.

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Hydrogeophysical investigation of the area around Angware and its environs was carried out. It is about 25km 05'E and 9 0 08'E. Schlumberger resistivity configuration method was used and interpreted with IP2Win 2.1 program. Geologically is underlain by Precambrian Basement complex(600±150Ma) and Mesozoic Younger Granites(130-150Ma).Computer aided results showed that the area is characterized by seven curve-types (A,H,Q,HA,QH,KA and QK) and 3,4 and 5 geo-electric layers with resistivity range and thickness of 100-692Ωm,1.4-51m; 15.7-1300Ωm,0.9-84m; and 72-504Ωm,0.9-36m respectively. The aquiferous zone revealed by the results is weathered/fractured Basement at a depth between 10-35m and resistivity range from 18-107Ωm, drilling depth of 20-45m is recommended for maximum yields.