Papers by Kazeem Salako Adeyinka
Journal of Geology and Mining Research
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Geology, Geophysics and Environment
The magnetic signatures over the southern part of Kebbi State and its environs were analyzed toge... more The magnetic signatures over the southern part of Kebbi State and its environs were analyzed together with the geological settings of the area to delineate the structures that may host gold mineralization. The aeromagnetic data used was the survey carried out by Fugro airborne surveys between 2005 and 2010 on behalf of the Federal Government of Nigeria. The reduction to equator (RTE), first and second vertical derivatives (FVD and SVD), Centre for Exploration Targeting (CET), analytic signal (AS), source parameter imaging (SPI) and tilt derivative (TDR) techniques were applied to the magnetic data covering the area. The results of the AS technique revealed that the study area is characterized with high amplitudes of magnetic anomalies (above 0.048 nT/m) and these could be of ferromagnetic minerals such as gold. The FVD, SVD, CET and TDR techniques also helped in delineating the lineaments (such as faults, fractures or shears zones) believed to be associated with alteration zones whi...
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Advances in Space Research
This study aims to reconstruct the subsurface crustal and radiogenic heat models from integrated ... more This study aims to reconstruct the subsurface crustal and radiogenic heat models from integrated airborne magnetic and gamma-ray spectrometric and satellite gravity methods for implications on hydrocarbon exploration in the Bornu Basin, NE Nigeria. The results revealed the basin’s lithologies and shallow-to-deep structures (faults and lineaments) and their trends, depicting contrasting magnetic intensities, gravity anomalies, and radionuclide concentrations. High magnetic anomalous zones in the southern and southeastern parts of the basin could be associated with the influence of the intrusive body (porphyritic granite) of high magnetization as observed in the 2D magnetic/gravity models. Moderate to low anomalous zones suggested thick sedimentation in the northeastern and central areas. The total horizontal derivatives (THDR) and Rose diagrams of the magnetic and Bouguer anomalies revealed major lineaments/faults in the NE-SW, NNE-SSW, and E-W directions. These structures likely serve as the migratory pathways/traps for the hydrocarbons. The structures delineated on the radioelements ratio, and composite maps also correlate with those identified on the THDR maps, especially the major SE-NW structure created by magmatic intrusion in the southeastern part of the basin. The estimated total radiogenic heat production (RHP) rates for the study area decreased in the order of 740.46>674.16>665.35>462.23>415.17, with the maximum obtained from the Yolde Formation (YF) and Pindiga Formation (PF). These are attributable to clay, limestone, shale, and ferruginized sandstone. The Chad Formation (CF), on the other hand, had thicker sediment (6.8 km) and a maximum RHP of 550 𝜌𝑊𝑘𝑔 ―1, which is relatively low (<750 𝜌𝑊𝑘𝑔―1) for hydrocarbon maturation and accumulation. Hence, CF is not visible for hydrocarbon prospecting as the RHP obtained might not be sufficient. The RHP >797.87 𝜌𝑊 𝑘𝑔 ―1 obtained in the PF and the YF falls within the moderate RHP windows (750–1500 𝜌𝑊 𝑘𝑔 ―1) for sufficient hydrocarbon maturation and accumulation in the Bornu Basin.
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FUDMA JOURNAL OF SCIENCES, 2022
High resolution aeromagnetic data combined with the geological settings of the study area were em... more High resolution aeromagnetic data combined with the geological settings of the study area were employed in delineating the structures that may host the gold mineral within the middle parts of Anka schist belts. These data were analysed, processed and interpreted using; reduction to magnetic equator (RTE), first and second vertical derivatives (FVD & SVD), geologic contact, analytic signal (AS), centre for exploration targeting (CET) and source parameter imaging (SPI) techniques. RTE technique was applied to prevent North-South signal in the data from dominating the results, due to the area falls under the low latitude. FVD and SVD maps shows major NE trend of the structures within study area. CET map revealed the regions with linear structures (lineament) which were trending South-Eastern regions of the study area. Geologic contact map has highlighted high density of structural contacts combined with junctions and intersections of different structures found within the area. AS map e...
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Nigerian Journal of Technological Research, 2015
A two dimensional modelling of the subsurface structures of parts of Benue Trough and Bornu Basin... more A two dimensional modelling of the subsurface structures of parts of Benue Trough and Bornu Basin, northeast Nigeria, using aeromagnetic data was carried out in this study. The area under investigation is bounded by latitude 9.50 N to 12.00 N and longitude 9.50 E to 12.00 E. It is covered by 25 aeromagnetic maps. The data obtained were subjected to filtering process using polyfit. Residual data obtained were subjected to 2D subsurface modelling. The study area was covered by seven profiles labelling, AA1, BB1, CC1, DD1, EE1, FF1 and GG1. The depth to magnetic sources results obtained from the Source Parameter Imaging (SPI) was used as depth constraint for modelling the residual magnetic field anomalies. The results of the 2D modelling showed that the sedimentary thicknesses ranged from 0.0 km to a maximum depth of about 5.40 km. The highest sedimentary thicknesses were found around Gombe, Ako Gombe, Bulkachuwa and Damaturu areas, with a value of about 3.80 km to 5.40 km. The highest sedimentary thicknesses obtained, which range between 3.80 km to about 5.40 km is adequate for the hosting of hydrocarbons. The least sedimentary thicknesses obtained from this study could be found around Bauchi axis in the basement complex region, Kaltungo and volcanic area at the eastern part of the survey area. The results of this study also indicated that Borno Basin is separated from the Upper Benue Trough at about latitude 11.00 N to 11.20 N, which corresponds to “Dulbulwa-Bage High”. This separation could have been aided by the paleostructure called St Paul that passes through the area at that latitude. The subsurface lithology obtained from 2D modelling of the residual field showed the presence of two lithological units. The sedimentary rock unit underlined by the basement rock consists of shales, sandstones, limestones, siltstones, clay and non-marine facies. The Basement rock units were composed of pegmatite, granite gneiss and migmatites. Keywords : Aeromagnetic data, 2D modelling, Sedimentary thickness, Source Parameter Imaging and Subsurface lithology
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Bayero Journal of Pure and Applied Sciences, 2011
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Arabian Journal of Geosciences
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Asian Journal of Physical and Chemical Sciences, 2017
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International Engineering Conference (IEC), FUT, Minna, 2019
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Asian Journal of Geological Research, Apr 30, 2021
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Source Parameter Imaging (SPI) of aeromagnetic data covering latitude 9.5 0 – 12.0 0 and longitud... more Source Parameter Imaging (SPI) of aeromagnetic data covering latitude 9.5 0 – 12.0 0 and longitude 9.5 0 – 12.0 0 , which corresponds to upper Benue trough and southern Borno basin, northeast, Nigeria, was carried out for the purpose of investigating the sedimentary thickness beneath the subsurface. The study area is covered by 25 aeromagnetic maps. The aeromagnetic maps were digitized on a 3 km by 3 km grid and later compiled to produce a combined aeromagnetic data file of the study area. The 3 km spacing interval imposed a Nyquist frequency of 0.167 km -1 while the data file comprised 7921 data points. The Polynomial Fitting method was applied in the regional–residual separation. The depth to magnetic source was determined through several mathematical processing from various grids. The pre-processed grids from the residual grid as input grid are dx, dy and dz. These output grids were later served as input grids for SPI processing. First order derivative was adhered to, as the meth...
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Chiang Mai University Journal of Natural Sciences
In this research, combined 2D electrical resistivity and self-potential (SP) methods were employe... more In this research, combined 2D electrical resistivity and self-potential (SP) methods were employed to locate anomalous electrical conductivity around the Goronyo dam in order to determine the condition of the embankment of the earth dam. The data were taken with the reference to resistivity and SP values using Wenner configuration. The results obtained from these techniques shows that the area was underlain by four stratigraphic layers, namely; clayey sand, wet sandy clay, laterite and partially weathered basement complex rock as compared with the resistivities of common rocks and borehole lithology of the area. The low SP (< 200 mV)/high resistivity zones in the overburden of profiles P1, P2 and P3 shows the presence of partially weathered basement complex rocks which was probably due to compactness and dryness around the dam. However, the zones of high SP (≥ 200 mV)/low apparent resistivity regions (z1 and z2) of profiles P1 (2 Ωm to 27 Ωm), P2 (3 Ωm to 25 Ωm) and P3 (3 Ωm to 1...
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Advances in Geophysics, Tectonics and Petroleum Geosciences
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Iranian Journal of Earth Sciences, 2021
A new exploration technique called Thorium Normalisation Method has been applied on the airborne ... more A new exploration technique called Thorium Normalisation Method has been applied on the airborne radiometric data of the Bornu basin and its environs to delineate favourable zones for hydrocarbon accumulations within the study area. This method is significant because it indicates the probable presence of hydrocarbon in a sedimentary basin. Separation of the radiospectrometric measurements over each lithologic unit and the estimation of the characteristic statistics of these units were carried out. The statistical treatment applied on the radioelements (K, eTh and eU) of the study area shows a relatively low coefficient of variability (CV%) value for K, eTh and eU signifying their high degree of homogeneity. The mean value of the radioelements (K ranging from 0.6 to 2.0 %; Th ranging from 9.6 to 15.9 ppm and U ranging from 2.2 to 3.8 ppm) obtained from the statistical analysis correlates with the mean of natural radioelement (K ranging from 0.1 to 2.7 %; Th ranging from 0.4 to 11.2 ...
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Journal of Geography, Environment and Earth Science International, 2020
Qualitative analysis of Aeromagnetic data of parts of north central Nigeria had been carried out ... more Qualitative analysis of Aeromagnetic data of parts of north central Nigeria had been carried out with the aim to delineate seismic prone areas. The study area is bounded with latitude 9. 00o to 10. 00oN and longitude 7.00o to 9.00oE with an estimated total area of 24,200 km2. Vertical derivatives and upward continuation filters were used to enhances long wavelength anomalies which could give preliminary information about the magnetic structures present in the study area. The total magnetic intensity map shows both positive and negative anomalies with susceptibility ranging from 33487.7 nT to 33800.9 nT. The high magnetic susceptibilities dominated in the basement region around the north-eastern and north-western parts of the study area which corresponds to Naraguta, Jemma and Kafanchan area. Based on the geology of the area this is attributed to granite, schist and migmatite rocks. The low magnetic values are made of sediment deposition also dominates the south-western part of the s...
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Journal of Geography, Environment and Earth Science International
The Production data of Okpella Field, located within the Offshore Niger Delta Basin, Nigeria, rev... more The Production data of Okpella Field, located within the Offshore Niger Delta Basin, Nigeria, revealed that the Okpella Field attained peak annual hydrocarbon production of 430175 MBO (Million Barrel of Oil) in 2008, and the production has presently dropped to 7839 MBO per annum. Therefore, an appraisal study was conducted to identify opportunities for reversing the low production. The sought opportunities were bypassed reservoirs with pay zones. This study uses geophysical Well log data, Biostratigraphic data, and Production data to appraise Okpella Field. The hydrocarbon production data were analyzed for the produced reservoirs to establish the positive effects of the Bypassed hydrocarbon reservoirs zone within Okpella Field Offshore Niger Delta Basin. Before this study, the operating company had previously identified six reservoirs. They were named major reservoirs Sand A to F, of which major reservoirs B, C, and E are gas-bearing, major reservoir D bears gas and oil, and major ...
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Assessment of the structures and solid minerals was carryout to investigate subsurface structural... more Assessment of the structures and solid minerals was carryout to investigate subsurface structural characteristics and mineralization potential zones within part of north-central Nigeria. The residual magnetic intensity data of the area was reduced to magnetic pole after which several source edge detection/interpretation with depth determination techniques including, analytic signal; tilt derivative; first and second vertical derivatives and Euler deconvolution were applied to the aeromagnetic data. From the analytic signal map, three magnetic zones were delineated. These are: low to relatively low magnetic zone (LM) with amplitude range from 0.003 to 0.009, moderate magnetic zone (MM) with amplitude 0.009 to 0.106 and those with amplitudes above 0.106 were products of later magmatic intrusions into host with fractures, faults and joints. Tilt derivative helped in delineating location and extent of edges of causative sources while Euler deconvolution helps in determination of boundary, depth and geometry of the structures. From first vertical derivative map, Original Research Article Tawey et al.; JGEESI, 24(5): 11-29, 2020; Article no.JGEESI.58030 12 structures were found to have high lineament density around the central portion of the area and span toward the western end of the map were delineated. The lineaments mapped trending in the ENE-WSW followed by WNW-ESE with some NE-SW, NNE-SSW and NNW-SSE trends. The second vertical derivative (SVD) map also helped in delineating structures and possible mineralization zones that are pronounced within the study area, around high analytic signal zones. Delineated possible and favorable mineralization zones from second vertical derivative map correlate with portion of the study area with rocks showing high analytic signal amplitude suggesting the rocks to be of later magmatic intrusions where mineralization fluids solidify within the host rocks.
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Indonesian Journal of Earth Sciences, 2021
This research evaluates the significance of geotechnical and Electrical Resistivity methods in st... more This research evaluates the significance of geotechnical and Electrical Resistivity methods in studying structural integrity as fundamental factors that may account for failure in a typical sedimentary environment of Ukpenu Primary School, Ekpoma, Edo State, Nigeria. Two methods were used in this study such as the Electrical Resistivity approach involving the use of Lateral Horizontal Profiling (LHP), 2D Electrical Resistivity Tomography (ERT), and Vertical Electrical Sounding (VES) techniques. While geotechnical method involved the collection of soil samples from the study locations for the characterization of the soil properties that are very vital to foundation studies. Nine VES were carried out using Schlumberger array with current electrode spacing varying from 1 to 40 m, with 2-D ERT using Dipole-Dipole electrode array with inter-station separation of 5 m and an expansion factor varied from 1 to 5 while LHP involve Wenner array with an electrode spacing of 5 m interval and was...
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Journal of Information, Science, Technology and Education (JIEST), 2019
This study examined three modes of podcast augmented instruction, learning style and preservice p... more This study examined three modes of podcast augmented instruction, learning style and preservice physics teachers' cognitive learning outcome in Colleges of Education in North-Central, Nigeria. It was a pretest, posttest and delayed posttest and quasi experimental research using 3x3 factorial design. Two hundred and seventy-eight students from intact Physics classes in three Colleges of Education were selected based on convenience and substantial population, and were used as the sample for the study. The study answered three research questions and tested three hypotheses. Thermal Physics lessons were delivered as classroom lecture. Audio, Enhanced and Video podcast lessons on same content were published online and broadcasted as augmented instructions. Thermal Physics Achievement Test, Thermal Physics Retention Test and Learning Style Inventory were used as data collection instruments. The reliability coefficient of the test instruments and Inventory instrument were 0.78 and 0.89 respectively. The data collected were analyzed based on the research question and hypotheses using mean and MANCOVA in SPSS. The results revealed that the Physics contents taught using different modes of Podcast Augmented Instructions were well received and retained by the students irrespective of their learning styles. It was recommended that the use of podcast (audio, enhanced and video) should be encouraged in our higher institution in Nigeria with special consideration for video podcast in practical oriented courses.
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Modeling Earth Systems and Environment, 2020
This investigation deals with the assessment of aero-radiometric data of parts of the Sokoto Basi... more This investigation deals with the assessment of aero-radiometric data of parts of the Sokoto Basin, Northwest Nigeria for the prospect of geothermal energy. The study area lies within the longitude of 4° 30′–6° 00′ East and the latitudes 11° 00′–13° 30′ North covering an estimated total area of 45,375 km 2 . Fifteen aero-radiometric data sheets used for this investigation were processed, analyzed and interpreted qualitatively and quantitatively. The data were qualitatively interpreted using the blending method in Grid and Image Geosoft extension of Oasis Montaj software. Hence, the concentrations of Potassium, Thorium, and Uranium maps were produced. Quantitively, the rock type in each area was identified while processing the average element in each rock to estimate radiogenic heat production values. The concentrations of Potassium, Thorium and Uranium revealed results of 0.12–2.34%, 4.0–21.6 ppm and 0.6–5.6 ppm, respectively. The radiogenic heat production values vary between 0.95 and 3.63 μW/m 3 , with an average of 1.93 μW/m 3 . Consequently, the overall assessments show that the study area possesses moderately high contents of Potassium, Thorium and Uranium. The results of radiogenic heat production also indicated a favourable prospect for geothermal energy around Argungu, Wasagu and Zuru areas. Therefore, exploring these areas for the purpose of geothermal energy would augment power generation in Nigeria.
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Papers by Kazeem Salako Adeyinka