Series-1 (Jan. – Feb. 2023)Jan. – Feb. 2023 Issue Statistics
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|Paper Type||:||Research Paper|
|Title||:||Contact Locations Mapping of Magnetic Structures at Homa Hills Geothermal Prospect Area, Kenya|
|Authors||:||Onyango Shem || Bernard Adero|
Abstract: The location of edges of magnetic structures can be delineated and mapped accordingly through a close and careful analysis of magnetic data. These structural edges are geological features such as faults with lateral changes in susceptibility and geological contacts otherwise known as boundaries where a magnetic body may discontinue or terminate with differing susceptibility. The present work, therefore, aims at delineating contact locations of magnetic structures beneath Homa Hills geothermal manifestations. Homa Hills is a site of volcano in tertiary and Pleistocene times in the West of Kendu occupying most of the Homa peninsula, protruding into the Winam Gulf forming the eastern flank of Homa Bay......
Keywords: Contact Location, Generalized Derivative, Homa Hills, Horizontal Gradient, Reduction to the Equato
. Baranov, V. (1957). A new method for interpretation of aeromagnetic maps: pseudo-gravimetric anomalies. Geophysics, 22(2), 359-382.
. Baranov, V., &Naudy, H. (1964). Numerical calculation of the formula of reduction to the magnetic pole. Geophysics, 29(1), 67-79.
. Blakely, R. J., & Simpson, R. W. (1986). Approximating edges of source bodies from magnetic or gravity anomalies. Geophysics, 51(7), 1494-1498.
. Bournas, N., & Bake, H. A. (2001). Interpretation of magnetic anomalies using the horizontal gradient analytic signal.
. Cooper, G. R. J., & Cowan, D. R. (2011). A generalized derivative operator for potential field data. Geophysical Prospecting, 59(1), 188-194.
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|Paper Type||:||Research Paper|
|Title||:||Groundwater Investigation of Gadam town, Gombe State, Northeastern Nigeria|
|Authors||:||DR. Mohammed Ali Garba|
Abstract: A resistivity survey was carried out in Gadam Kwami LGA, sheet 152MW between Latitude 10˚ 27'30" - 10˚30'30" and Longitude 11˚04'00" - 11˚07'00". Gombe state Northeastern Nigeria to study the groundwater potential such a depths, thickness, resistivity and sediment at which water can be obtained. The Geo-electrical method used in the survey is Vertical Electrical Sounding, with the aim of determining Groundwater potential. Fifteen (15) Vertical Electrical Sounding were conducted using Schlumberger configuration with a maximum electrode separation of AB/2 = 200m to determine location favorable for sitting of borehole. The VES data were subjected to an iteration software (WINRESIST) which shows that the area is compose of top soil soft clay, compacted clay, Arkosic sand and clayey sand........
. Arabi, a., nur, a. & dewu, b. 2009. Hydro geo-electrical investigation in Gombe town and environs, northeastern Nigeria. Journal of Applied Sciences and Environmental Management, 13.
. Carter, J. D., Barber, W. & Tait, E. A. 1963. The Geology of Parts of Adamawa, Bauchi and Bornu Provinces in North-eastern Nigeria: Explanation of 1: 250,000 Sheets No. 25, 36 and 47, the authority of the Federal Government of Nigeria.
. Konikow, L.; Kendy, E. Groundwater depletion: A global problem. Hydrogeol. J. 2005, 13, 317-320.
. Mohammed, A. G. and Ibrahim, A. ((2014). Geo-Electrical Data Analysis to Demarcate Groundwater Pocket Zones in Kaltungo and Environes, Northeastern Nigeria. Journal of Applied Geology and Geophysics (IOSR-JAGG) Vol 2, Issue 3. Pp 43-50.
. Offodile, M. E. (1976) Review of the geology of the Cretacious Benue Valley.in Kogbe,C.A,Ed., Geology of Nigeria,Elizabethan Publishing Coy, Lagos 319-330.
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Abstract: Poisson's ratio σ has been effectively used in engineering, groundwater and hydrocarbon investigation.This research was conducted to determine the Poisson's ratio of topsoil using seismic refraction method in Uyo and environ, Southern Nigeria as an aid in determining the degree of stability of engineering foundation. The study area lies between latitudes 4045' and 5015' N and between longitudes 7o45' and 8o30' E in the Niger Delta region of southern Nigeria. The area is located in the Tertiary to Quaternary Coastal Plain Sands (CPS) and Alluvium environments of the Niger Delta region of southern Nigeria. A 24 - channel signal enhancement seismograph, geophones, sledge.......
Key Words: lithology, soil, Vp, Vs, seismic refraction, Uyo
. Baughman, R. H., Shacklette, J. M., Zakhidov, A. A. and Stafstrom, S. (1998). Negative Poisson's Ratios as a Common Feature of Cubic Metals. Nature, 392, 362-365.
. Bhagat, S. S., Bass, J. D. and Smyth, J. R. (1992). Single-crystal elastic properties of omphacite-C2/c by Brillouin spectroscopy, J. Geophys. Res., 97, 6843 – 6848.
. David, H., Nicholas, E. T. and Mark, A. P. (2019). The Variation and Visualisation of Elastic Anisotropy in Rock Forming Minerals, Solid Earth Discussions, 168, 1-47.
. Emujakporue, G. O., and Ekine, A. S. (2009). Determination of Rocks Elastic Constants from Compressional and Shear Wave Velocities for Western Niger Delta, Nigeria. Journal of Applied Science and Environmental Management, 13, 53-55. https://doi.org/10.4314/jasem.v13i3.55364
. Essien, U. E., Akankpo, A. O. and Igboekwe, M. U. (2014): Poisson's Ratio of Surface and Shallow Sediments Determined from Seismic Compressional and Shear Wave Velocities. International Journal of Geosciences, 5: 1540-1546
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Abstract: Basic and ultra-basic rocks are an important feature of the crustal evolution in the stabilized Archaeancratons all over the world. They constitute a common expression of crustal extension in both oceanic and continental environments, and represent major avenues by which basaltic magma is transferred from mantle to upper crust. Mafic dyke swarms are an important feature of the crustal evolution in the stabilized Archeancratons all over the world. The geological andpetrological details of basic and Ultra Basic of Lahn river area of NandgaonGondpipri area of western Bastarcraton have been discussed and understand to the petrogenetic processes involved during the emplacement of basic and ultra-basic rocks of the study area.
Key Words: Basic, ultra-basic, Field Petrography, Lahn River,WBC
. Dora, M.L. (2012) Report on investigation for PGE and nickel in the mafic-ultramafics of Heti area, Chandrapur district, Maharashtra. Unpub. Rep. Geol. Surv. India, Nagpur.
. Rajesham,T., BhaskarRao, Y.J. and Murthi, K.S. (1993) The Karimnagar granulite terrain - A new sapphirine bearing granulite province, South India. Jour. Geol. Soc. India. v.41, pp.51-59.
. Shashidharan, K. (2002) Report on detailed search for kimberlite-lamproite in parts of Andharibasinal area Chandrapur district, Maharashtra. Unpub. Rep. Geol. Surv. India, Nagpur.
. Shashidharan, K. (2007) Petrology and geochemistry of Mul granite pluton, western BastarCraton, Chandrapur district, Maharashtra. Gond. Geol. Mag., Spl. Vol.10, pp.45-54.
. Shashidharan, K. and Ganvir, D.V. (2007) Report on the specialized thematic mapping of Wairagarhmetasediments and adjacent gneiss-granite terrain, western Bastarcraton, Chandrapur and Garhchiroli districts, Maharashtra. Unpub. Rep. Geol. Surv. India, Nagpur.
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Abstract: Soil classification systems are used to help predict soil behaviour and provide information to geologists, engineers, builders, agricultural extension agents, community planners, and government agencies. Geoscientists and engineers use soil classification systems to characterize soils, determine potential behaviour, and understand limitations of the soils encountered in construction projects. Grain size analysis was used to investigate soil gradation and classification of the study area. The particle size distribution curves show that the soil samples were predominantly composed of fine-medium sands, with a lesser proportion of coarse sand and gravel fractions........
Key Words: Grain size analysis, soil grading, coarse grain soil, Soil classification.
. Holtz, R. and Kovacs, W. (1981), An Introduction to Geotechnical Engineering, Prentice-Hall, Inc. ISBN 0-13-484394-0
. George, G. C. and Oki, O. A. (2018) Determination of Aquifer Hydraulic and Statistical parameters using Granulometric method in Yenagoa, Southern Nigeria. Asian Journal of Geologocal Research. 1(1); 1 – 10, 2018
. Cosenza, P., Marmet, E., Rejiba, F., Cui, Y. J., Tabbahgh, A. (2006). Correlations between geotechnical and electrical data: A case study at Garchy in France. J ApplGeophys 60: 165−178.
. Adeyemo, I. A., Omosuyi, G. O., Olayanju, G. M. and Omoniyi, G. K. (2014). Hydrogeologic and geoelectric determination of groundwater flow pattern in Alaba-Apatapiti layouts, Akure, Nigeria. International Journal Engineering Science 3: 44–52
. George, G., C. and Biere, P., E. (2021).American Journal of Advanced Scientific Research, Vol. 2, Issue. 7, pp. 278-285, 2021
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Abstract: The Magnetotellurics(MT) method was used to characterize anddelineate the extent of the geothermal resource in Olkaria South East geothermal field, Kenya. The static shift effects of the MT datasets were corrected using the spatial median filter method. Dimensionality analyses performed using phase tensor showed lower skews at short periods and higher skews at long periods, indicating 1D and 2D characteristics at shallow depth and significant 3D structures at depth. 2D inversion was doneusing Occam to generate resistivity models of Olkaria South East field. 3D Inversion was also carried out using ModEM code due to its ability in mapping the deep-seated structures which are ambiguous giving inaccurate information when using 2D inversion. Both 2D and 3D results revealed presence of a relatively high resistivitylayer (10 – 40 ohm-m) at about 2.5 to 3km underlying a conductivelayer of resistivity < 5 ohm-m.
. Abdelfettah, Y., Tiercelin, J. J., Tarits, P., Hautot, S., Maia, M., &Thuo, P. (2016). Subsurface structure and stratigraphy of the northwest end of the Turkana Basin, Northern Kenya Rift, as revealed by magnetotellurics and gravity joint inversion. Journal of African Earth Sciences, 119, 120-138.
. Abera, C. B., Mizunaga, H., &Samrock, F. (2018). Imaging Resistivity Structures of High-Enthalpy Geothermal Systems Using Magnetotelluric Method: A case study of Aluto-Langano geothermal field in Ethiopia.
. Berdichevsky, M. N., & Dmitriev, V. I. (2008). Models and methods of magnetotellurics. Springer Science & Business Media.
. Berdichevsky, M. N., & Dmitriev, V. I. (2002). Magnetotellurics in the context of the theory of ill-posed problems. Society of Exploration Geophysicists.
. Berdichevsky, M. N., Dmitriev, V. I., &Pozdnjakova, E. E. (1998). On two-dimensional interpretation of magnetotelluric soundings. Geophysical Journal International, 133(3), 585-606