Browsing by Author "Ayanninuola, O.S."

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    ASSESSMENT OF GROUNDWATER POTENTIAL OF RISHA PART OF AKWANGA SHEET 209NE, NORTH CENTRAL NIGERIA
    (Department of Geology and Mining, Nasarawa State University Keffi, 2020-07-01) Tukura, Bitrus Wokhe; Jatau, B.S.; Yakubu, M.E.; Tanko, I.Y.; Kana, A.I.; Ayanninuola, O.S.
    A geological traverse was undertaken in Risha, part of Akwanga Sheet 209NE North-Central Nigeria to appraise the rock types and their structural patterns that might enhance prospect for water. Three rock types; schistose-gneiss, granite-gneiss and pegmatite, with their main structural pattern were discovered, trending mostly NW-SE. Analysis of twenty-three Vertical Electrical Resistivity Soundings (VES) carried out in the area using the Campus Ohmega digital resistivity meter showed that the field curves were of H, KH, HK, A and K types. There were majorly four to five geoelectrical layers consisting of topsoil (sand/clay) with depth range of 0.3-2.4m and resistivity value of 66-2850Ωm. The second layer is lateritic clay with depth range of 0.4-5.7m and resistivity range of 222- 3575Ωm. The third layer had a depth range of 1.2-8.6m with resistivity of 40-4591Ωm, while the fourth layer, weathered rocks or regolith, has a depth range of 3-33m and resistivity range of 49-23668Ωm. Two locations gave six lithological layers/units being partially fractured/fresh basement with resistivity values of 1028-4574Ωm and depth range of 11.4- 24m. The water potential of the area may be classified as poor, moderate, good and very good and varied from location to location. The groundwater potential area varies with high potential around Risha, Tidde and Ridam compared to Ade-Katako, Ngazzu,AngwanDorowa, Ngakide and Adande. Based on the textures, structural pattern and well measurement interpretations, the granite gneiss was observed to have more water prospectivity than the schistose gneiss.
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    Assessment of Underground Water Potential in Ninga, Akwanga West Development Area, North Central, Nigeria
    (Department of Physics, Nasarawa State University Keffi, 2022-12-12) Ayanninuola, O.S.; Abdullahi, N.K.; Loko, A.Z.; Isah, S.H.; Ogwola, P.
    Ninga area of Akwanga Development Area, North central Nigeria was investigated for the evaluation of groundwater potential. The area is underlain by the Basement Complex of the North-Central Nigeria. Twelve Vertical Electrical Sounding points were identified in the study area using Omega Resistivity Terameter, GPS12Garmix with cable spread of AB/2=160m. Schlumberger electrode configuration was employed. The Vertical Electrical Sounding (VES) data acquired were interpreted into a model curve using IX1D. From this interpretation three (3) different curve types were obtained from the acquired data. They are QH, QA and H. QH type is the dominant type of the curve obtained. It was observed that the aquifer depth range between 8m-46m, basement resistivity 700 Ωm -3700Ωm, depth to basement 16- 56m, aquifer thickness 4m – 31m and aquifer resistivity 150 Ωm -600Ωm. The groundwater potential varies in the study area, VES 1, 4, 5, 6, 7, 9,10, 11, and 12 are viable locations for groundwater exploration, with true aquifer resistivity values range from 150-600Ωm. Keywords: Aquifer, Basement Complex, Electrical Resistivity, Vertical Electrical Sounding,
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    GEOELECTRIC SOUNDINGS FOR THE DETERMINATION OF AQUIFER CHARACTERISTICS IN ANJAGWA, NASARAWA STATE NIGERIA
    (Department of Physics, Nasarawa State University Keffi, 208-09-28) Ayanninuola, O.S.; Jatau, B.S.; Loko, A.Z.
    A total of fifteen (15) Schlumberger Vertical Electrical Soundings (VES) were carried out in Anjagwa area of Nasarawa State, Nigeria, using a maximum current electrode separation of 500 m. The data were interpreted using a conventional partial curve-matching method to obtain initial model parameters, which were used in a computer program IXID to obtain final parameters. Aquifer parameters of longitudinal conductance and transmissivity were obtained using Dar-Zarouk parameters. The results of interpretation revealed four to five geoelectric layers. High transmissivity values are recorded at VES 3, 4, and 5 with high thicknesses, which imply that thick aquifer materials have higher transmissivity values than areas underlain by relatively thin aquifer materials. Such result is expected because transmissivity is a function of aquifer thickness.
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    HYDROGEOPHYSICAL APPRAISAL OF RISHA, PART OF AKWANGA SHEET 209NE, NORTH CENTRAL NIGERIA
    (Department of Geology and Mining, Nasarawa State University Keffi, 2017-11-18) Jatau, B.S.; Tanko, I.Y.; Usman, O.H.; Yakubu, M.E.; Ayanninuola, O.S.
    Ageological traverse was undertaken in Risha, part of Akwanga Sheet 209NE North-Central Nigeria to appraise the rock types and their structural patterns that might enhance prospect for water. The geological traversing revealed basically three rock types which include schistose-gneiss, granite-gneiss and pegmatite (as veins and/or dykes) with their main structural pattern trending mostly NW-SE. Twenty three (23) Vertical Electrical Resistivity Soundings (VES) were carried out in the area using the Campus 0? .vega digital resistivity meter. This is in order to study the subsurface geological layers with a view to deterrrT
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    VELOCITY LAYERING IN THE MIDDLE BENUE TROUGH NIGERIA USING SEISMIC REFRACTION DATA
    (Department of physics, Nasarawa State Univesity Keffi, 2022-01-01) Abdullateef, Abidemi H.; Uko, Etim D.; Ayanninuola, O.S.
    Seismic refraction data was acquired in the Middle Benue Trough which is located in the north central Nigeria with latitude 07.5-08.5oN and longitude 08.00-09.30oE. The aim was to find out how velocity vary in the near- surface layers in the area using seismic refraction data. The seismic survey was investigated at 14 acquisition stations. Two overlapping reversed profiles were shot into 14 stations. Each acquisition station was primed with 0.20kg dynamite loaded at 1.5m below the surface. The recording equipment was McSeis-160MXTM, and monitor record was processed with Microsoft Excel software to determine the velocities from both the forward and reversed shot-points. The results show two distinct layers cases. The thickness of the topmost layer varies between 2.75m and 5.45m with a mean of 4.1m. The velocity of this topmost layer varies between 399.0 ms-1 and 767.0ms-1 with a mean of 604.8ms-1. The velocity of the underlying layer (V1) varies between 1212.5ms-1 and 3257.0ms-1 with a mean of 1757.9ms-1. The velocity increases with depth into the subsurface. The results are useful in locating groundwater aquifer, and in the design of source-receiver arrays for reflection seismic.