Series-1 Mar-Apr-2019 Issue Statistics
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| Paper Type | : | Research Paper |
| Title | : | Integrated Geophysical Investigation of Aquifer and Its Groundwater Potential in Camic Garden Estate, Ilorin Metropolis North-Central Basement Complex of Nigeria |
| Country | : | Nigeria |
| Authors | : | Bawallah, M. A. || Aina, A.O. || Ozegin, K.O. || Akeredolu, B.E. || Bamigboye, O.S. || Olasunkanmi, N.K. || Oyedele, A.A. |
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: | 10.9790/0990-0702010108  |
Abstract: This paper presents a geophysical study for ground water evaluation in a typical crystalline basement complex terrain of Camic garden estate in Ilorin metropolis, North central basement complex of Nigeria. Very Low Frequency-Electromagnetic (VLF-EM) and Ground Magnetics (GM) were used for structural evaluation/delineation combined with Electrical Resistivity Method (ERM) using the Vertical Electrical Sounding (VES) Technique. Eight (8) VLF-EM and GM profiles covering a distance range of 70 to 300 m were established, VLF-EM at a measuring intervals of 10 m each, while six (6) VES were carried out based on quantitative, semi-quantitative of the VLF........
Keywords : Aquifer, Basement Complex, Borehole yield, Geophysical investigation, Groundwater
[1]. Kayode, J. S., Adelusi, A.O., Nawani, M.N.M., Bawallah, M, Olawale T.S. A geoelectric investigation of near surface conductive structures suitable for groundwater accumulation in a resistive crystalline basement environment around the southwestern Nigeria. Journal of Africa earth sciences. 2016: 59(2), 289-302.
[2]. Manda, A.K., Mabee, S.B. and Boutt, D.F. Characterising fractured crystalline bedrock aquifers using hydrostructural domains in the nashoba terrane, Eastern Massachusetts. In: Proceeding of 2006 Annual Meeting of the Geological Society of America, Philadelphia, Pennsylvania, 22-25 October 2006.
[3]. Todd, J. T. The visual perception of 3D shape. Trends in Cognitive Sciences. 2004: 8(3), 115-121.
[4]. Lyford, F.P. A conceptual framework for predicting sustainable well yields in crystalline-rock aquifers, examples from Massachusetts. In: Proceeding of 2004 Annual Meeting of the Geological Society of America, Philadelphia, Pennsylvania, 25-27 March 2004.
[5]. Benson, S., Jones C. R. The combined EMT/VES Geophysical method for siting boreholes, 1988: 54-63
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| Paper Type | : | Research Paper |
| Title | : | Spectral Analysis of Aeromagnetic Data over Some Parts of Central Benue Trough, Nigeria |
| Country | : | Nigeria |
| Authors | : | I.E. Ibiene || C.O. Ofoegbu || O.S. Ayanninuola || E.D. Uko |
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: | 10.9790/0990-0702010915 |
Abstract: The spectral analysis of the magnetic anomalies over some part of Central Benue Trough, Nigeria, has been carried out in order to determine the magnetic source depths and the variability of basement structures. The aeromagnetic maps of the study area was digitized at two kilometer (2km) intervals and were subjected to multi-regression-least-squares analysis in order to obtain the residual field values. Two-dimensional (2-D) spectral analyses were then carried out to determine the average magnetic source depths. The results of the analysis reveal that the thickness of the sedimentary cover in the area varies between 1.25km and 5.60km; and 0.13km and 1.53km for deeper and shallower sources respectively. The results of this study are indicative of the basement overlain being irregular in shape and is associated with faulted structures.
Keywords : spectral, magnetic, basement, Central Benue Trough, Nigeria.
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[3]. Hahn, A. E., Kind, G. and Mishra, D. C. (1976). Depth estimation of magnetic sources by means of Fourier Amplitude Spectral. Geophysical Prospecting, 24, 287-308.
[4]. Ofoegbu, C. O. and Onuoha, K. M. (1990). Analysis of Magnetic Data over the Abakaliki Anticlinorium of the Lower Benue Trough, Nigeria. Marine and Petroleum Geology, 8,174-183.
[5]. Jatau, B. S. and Abu, N. (2013). Morphology of Parts of the Middle Benue Trough of Nigeria from Spectral Analysis of Aeromagnetic Data (Akiri Sheet 232 and Lafia Sheet 231. International Journal of Geological and Environmental Engineering, 7 (9), 622 – 627.
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| Paper Type | : | Research Paper |
| Title | : | Earthquake Distributions of the Mesopotamia Plain, Iraq |
| Country | : | Iraq |
| Authors | : | Badria Ali Hussien || Wathiq Abdulnaby |
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: | 10.9790/0990-0702011620 |
Abstract: In this paper, the statistical distributions of earthquake epicenters, hypocenters, and magnitudes were analyzed for the Mesopotamia Plain, which is located at central and southeastern part of Iraq between longitudes 36-48°E and latitudes 26-36°N, for the period of 1900 to 2018 in order to have better understanding of the seismic activities in the study area. For this purpose, the bulletin of the International Seismological Center was used to draw three contour maps depict the earthquake distributions of the study area. The earthquake distributions show that the number, depth, and magnitude of earthquakes decrease from the Iraq-Iran border toward the Mesopotamia Plain.That means the seismic activity of the Mesopotamia Plain is less than the seismic activity of the Zagros Fold-Thrust belt. However, earthquakes at the edges and within the Mesopotamia Plain occur frequently each year.
Keywords : Earthquakes distribution, Mesopotamia Plain, Seismicity of Iraq.
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