Abubakar Yusuf - Academia.edu (original) (raw)

Papers by Abubakar Yusuf

BIMA JOURNAL OF SCIENCE AND TECHNOLOGY (2536-6041)

Electrical resistivity technique was deployed in the study of extent of corrosivity and aquifer p... more Electrical resistivity technique was deployed in the study of extent of corrosivity and aquifer protective capacity (APC) or aquifer vulnerability of the overburden units around Wajari and environs, north eastern Nigeria. The objectives of this research includes; outlining areas that have high susceptibility to groundwater pollution from surface pollutants and subsurface soils that could be corrosive to buried metal pipes. Twelve (12) vertical electrical sounding (VES) locations were studied using electrode spreads of AB/2 equals to 80 m. OHMEGA Terrameter was deployed to acquire the data by employing Schlumberger array method. The analysis (interpretations) of the results were assisted by employing Win-Resist, Microsoft- Excel and surfer-13 Software The resistivity data interpretation revealed 4 geo-electric layers and the generated distribution curves are of type A, H, K, HK, and QQ. The measured thickness of the overburden lithologic units are in the range of 0.396 m to 27.2 m, w...

Sains Malaysiana, Mar 31, 2022

Geothermal energy resources have been established globally to be among the sustainable and enviro... more Geothermal energy resources have been established globally to be among the sustainable and environmentally harmless means of energy generation. Curie-point depths (CPD), temperature gradients, and heat flow data over the study area were computed using a spectral analysis method in order to have a preliminary view of the geothermal implications (prospect) of the current area. Aeromagnetic data acquired by the Nigerian Geological Survey Agency (NGSA) in the year 2009 was used for the research. The results showed the minimum, maximum, and the average CPD values as 8.18 km, 31.48 km, and 13.0 km, respectively. The minimum, maximum and average thermal gradients obtained were 18.42 °C/km, 70.91 °C/km, and 50.2 °C/km, respectively. The heat flow data obtained ranged from 33.15 mW/m 2 to 177.28 mW/m 2 , with an average value of 110.65 mW/m 2. Locations depicting shallow CPDs anomalies (Alkaleri, Darazo, Dukku, Misau, Wuyo, Deba, and Tula), also showed conformity with high heat flow areas. As such, they are regarded as areas of promising geothermal prospects and are recommended for further detailed investigation. Locations depicting a high magnetic susceptibility contrast from a generated analytic signal map, as well as high temperature gradients, high heat flow, and shallow CPDs are attributed to crustal thinning along the sedimentary basin and magmatic intrusions along basement areas, respectively. The magnetic depth to the basement calculated for the study area using the source parameter imaging (SPI) method ranges from 0.610 km to 3.055 km. The present study has provided an insight on preliminary information, regarding new areas of possible geothermal prospects for further detailed investigation.

International Journal of Progressive Sciences and Technologies, Apr 22, 2018

Ground magnetic survey was conducted Using G856-Memory-Mag TM Proton Precision Magnetometer and t... more Ground magnetic survey was conducted Using G856-Memory-Mag TM Proton Precision Magnetometer and the earth's magnetic field data acquired following a regular grid patterns. The aim of the survey is to delineate lineaments patterns and to relate them to the tectonic frame work of the Adamawa Massif of northeastern Nigeria. The study area is composed of granite gneisses, biotite hornblende gneiss and porphyritic granites. Iron mineralized veins and non mineralized fractures (joints and faults) were found to be predominantly oriented in a NE-SW and NW-SE trends. The magnetic anomalies observed after subjecting the potential field data to Horizontal Derivative filtration technique shows conformity with the direction of flows of rivers and stream channels found in the study area (this indicates structural control of the rivers and streams). These orientations are also concordant with the trends of structural features (foliation/fractural) mapped in the Adamawa Massif of Northeastern Nigeria. The present research work has thrown more light on the Geology and tectonics of the area.

Journal of Natural Sciences Research, 2013

This research aimed at investigating the concentration of arsenic (As) due to their potential env... more This research aimed at investigating the concentration of arsenic (As) due to their potential environmental impact and contamination, in the rocks (Coarse Porphyritic Granite, Biotite Granite, Bima Sandstone and basalt) of the Kaltungo area which is part of the Upper Benue Trough. Eight (8) fresh samples (two from each lithologic unit) were collected and analysed using Inductively Coupled Plasma Optical Emission Spectrometer (ICPOES) for arsenic (As). The results were presented using graphical presentations and this revealed that rocks in the study area host high concentration of arsenic (As) (87.54-237.65 ppm) compared with the average crustal abundance of 2ppm. These values can be attributed to high concentration of the element in the initial magma and/or hydrothermal and weathering processes which acted on the rocks. The high concentration of arsenic (As) in the rocks of Kaltungo area calls for further studies on its distribution and concentration in the soils, stream sediments a...

IOSR Journal of Applied Geology and Geophysics, 2017

The study area is located in the northwestern part of the Adamawa massif of northeastern Nigeria ... more The study area is located in the northwestern part of the Adamawa massif of northeastern Nigeria and lies between longitude 11 0 50 / E and 12 0 00 / E and latitude 8 0 49 / N and 8 0 55 / N. Lithologies of the area include: granite-gneisses, porphyritic granites, and biotite hornblende gneiss. A G-856 Memory-Mag TM proton precision magnetometer was used to acquire ground magnetic data of the area following a regular grid pattern. The magnetic data were subjected to diurnal correction and contoured using Surfer 11surface mapping software to produce a magnetic map. Areas characterized by anomalous magnetic values (34342-34348 nT) are interpreted as areas of iron occurrences. The computer software WingLink was been used to generate 2-D subsurface geologic models for the computation of the depths to the anomalous bodies. The average depth to the source of anomalous bodies is 351.67 m, which is interpreted as average depth to iron mineral occurrence. Ground geologic mapping confirmed areas of surface iron occurrences as veins in granite gneiss. Geological investigation of the discovery is suggested to determine the tenor and tonnage for possible economic exploitation as part of Nigeria's government plan to revitalize the solid mineral/mining industry.

Recently, the Nigerian Geological Survey Agency (NGSA) acquired high resolution airborne data ove... more Recently, the Nigerian Geological Survey Agency (NGSA) acquired high resolution airborne data over Nigeria and have commenced surface geological mapping in some parts of the country. This research becomes imperative taking into account time consumption and the risk associated with geological field mapping in recent time which includes difficulty in terrain coverage, abduction of field workers and insurgency in some part of the country. In this research an attempt was made to carry out litho-magnetic mapping and delineation of surface structures from interpretation of high resolution aeromagnetic data within northern Bida basin and environs. High resolution aeromagnetic data of the study area was subjected to regional residual separation, analytical signal, vertical derivative, tilt angle derivative, horizontal tilt derivative and upward continuation filters in the Oasis Montaj Version 7.0.1 Geo-software environment to enhance data for interpretation. Results from the total magneti...

Global Journal of Geological Sciences, 2018

This research examined the levels of heavy metals in boreholes and hand dug wells within Kashere ... more 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 study is aimed at assessing the water quality index (WQI) for groundwater in Gombe and Enviro... more The study is aimed at assessing the water quality index (WQI) for groundwater in Gombe and Environs. WQI, a technique of ratingwater quality, is an effective tool to assess spatial and temporal changes in groundwater quality. This has been determined by collecting 50 groundwater samples from bore holes and hand dug wells and subjecting the samples to comprehensive physicochemical analysis. The following 15 parameters were considered for calculating WQI: Sodium, potassium, calcium, magnesium, chloride, bicarbonate, Sulphate, nitrate, iron, pH, Total Hardness, Conductivity, fluoride, and phosphate. The values of WQI of the samples were found in the range of 38.5 to 67.52. The majority of groundwater samples fall in good category (66%) others fall in excellent category (44%) indicating groundwater is fit for drinking purposes.

This work is aimed at investigating the concentration of Uranium in rocks of Kaltungo area due to... more This work is aimed at investigating the concentration of Uranium in rocks of Kaltungo area due to the potential treats that radioactive element could pose to the immediate environment. Eight (8) fresh representative rock samples were collected and analysed using the Inductively Coupled Plasma Optical Emission Spectrometer (ICPOES) for Uranium. The results were statistically computed and presented using tables and histograms. The findings revealed that rocks of the Kaltungo area are extremely rich in Uranium (from 1775ppm-20460ppm) compared with the average crustal abundance of 2.5ppm. This high concentration of Uranium in the area calls for great concern because of the environmental problems the high concentrations could cause on the immediate community.

This article is an open access article distributed under the terms and conditions of the Creative... more This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY

An integrated GIS, Remote sensing, and Geophysical techniques has been successfully applied to ge... more An integrated GIS, Remote sensing, and Geophysical techniques has been successfully applied to generate the previously non available groundwater prospectivity map for the present study area. Selected thematic maps were integrated using the weighted sum tool of the spatial analyst tool of the ArcGIS software. The five thematic maps used are: lithology map, drainage density map, slope map, lineaments density map, and the topographic map of the area. The groundwater prospectivity map generated was reclassified into low, moderate, high, and very high potential zones on the basis of their assigned layer rank, which also depends on their degree of influence on groundwater occurrence. Areas around Gombe, Wuyo, Deba, Alkaleri, Kaltungo, Misau, Nafada, Bajoga towns are the regions that showed very high prospects for groundwater occurrence. Data processing filters such as: horizontal derivatives, Analytic signal processing, 3d-euler depth estimation was applied on the magnetic data in order t...

Sustainability, 2021

Spatial mapping of potential geothermal areas is an effective tool for a preliminary investigatio... more Spatial mapping of potential geothermal areas is an effective tool for a preliminary investigation and the development of a clean and renewable energy source around the globe. Specific locations within the Earth’s crust display some manifestations of sub-surface geothermal occurrences, such as hot springs, a volcanic plug, mud volcanoes, and hydrothermal alterations, that need to be investigated further. The present area of investigations also reveals some of these manifestations. However, no attempt was made to examine the prospectivity of this terrain using the efficient GIS-based multicriteria evaluation (MCE) within the scope of the Analytic hierarchy process (AHP). The integration of remote sensing, Geographic information system (GIS), and other geophysical methods (Magnetic and gravity) was performed to map the promising geothermal areas. Multiple input data sets such as aero-magnetic, aero-gravity, aero-radiometric, digital elevation model (DEM), geological map, and Landsat-8...

Earth Resources, 2013

The concentration of arsenic (As) in the rocks (Coarse Porphyritic Granite, Biotite Granite, Bima... more The concentration of arsenic (As) in the rocks (Coarse Porphyritic Granite, Biotite Granite, Bima Sandstone and basalt) of the Kaltungo area which is part of the Upper Benue Trough has been investigated. Eight (8) fresh samples (two from each lithologic unit) were collected and analysed using Inductively Coupled Plasma Optical Emission Spectrometer (ICPOES) for arsenic (As). The results revealed that rocks in the study area host high concentration of arsenic (As) (87.54-237.65 ppm) compared with the average crustal abundance of 2ppm. These values can be attributed tothe mid-Santoniantectonismand magmatism in the Benue trough with high concentration of the element in the initial magma and/or hydrothermal and weathering processes which acted on the rocks.