SEISMIC REFRACTION AND ELECTRICAL RESISTIVITY INVESTIGATION FOR GROUNDWATER AT FATU MAIMASA ALONG KOGIN GABAS ROAD NASARAWA L.G.A. NASARAWA STATE

¹Mohammed B.I.; ²Yakubu, W.L and ²Annu U.J.

¹Department of Agricultural Engineering and ²Department of Agricultural Technology

Nasarawa State College of Agriculture, Lafia

Email: mbabaibraheem@yahoo.com

ABSTRACT

A geophysical survey involving vertical Electrical sounding (VES) and seismic refraction was carried out in Salri Integrated Farm along Kogin Gabas area of Nasarawa Local Government Area. A 12- channel ABEM Teraloc MKVI seismograph and ABEM Terameter model SAS 3OOC were used with their accessories in the surveys. The results of the survey showed that the depths to Basement rock rang from 24m to 47m at different places .The VES investigation further revealed that the over burden (regolith) generally consists of lateritic top soil coarse or gravelly sand, clayey sand or finely weather Basement rock and fractured Basement all overlying the fresh crystalline Basement rock. The lithologic section obtained from nearby boreholes showed good correlation with the interpreted geoelectric sections. The results of this study suggest that the area studied has good potential for ground water development or borehole programme.