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| Paper Type | : | Research Paper |
| Title | : | Power Spectral Analysis and Edge Detection of Magnetic Data of Migori Greenstone Belt, Kenya |
| Country | : | Kenya |
| Authors | : | Odek Antony || Githiri John || K'Orowe Maurice || Ambusso Willis |
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: | 10.9790/0990-0604010110  |
Abstract: With the continuous extraction of minerals in Migori greenstone belt, exploration is currently evolving from surface based exploration to subsurface exploration. This necessitates a good understanding of the geophysical features in the subsurface which are likely to have a direct bearing on the distribution of minerals. In this study, the measured total magnetic field data was subjected to cleaning process to remove perturbations which are not of geophysical interest, and later enhanced by removing long wavelength anomalies which are as a result of regional magnetic trend. Power spectral analysis of geologically constrained magnetic intensity field data was then conducted, in order to obtain the limiting depth of the anomaly causative bodies. Edge detection techniques were then employed on the delineated magnetic field intensity anomalies trending WNW-ESE along the belt...........
Keywords- Magnetic, Anomalies, Migori Greenstone belt, Inversion, Minerals
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[2]. Cooper G.R.J. (2009). Balancing images of potential field data. Geophysics, 74 (3), L17-L20.
[3]. Geosoft (Oasis Montaj) program, Geosoft mapping and Application system. Inc. Suit 500, Richmond St. West Toronto, ON Canada N5S1V6. User's Manual 2007.
[4]. Ichangi D.W. (1993).Lithostratigraphic setting of mineralization in the Migori segment of the Nyanza Greenstone Belt, Kenya.In: Proceedings of the fifth conference of the geology of Kenya.Nairobi, Kenya.
[5]. Kearey P., Michael B., Ian H. (2002). An Introduction to Geophysical Exploration. 3rd edition. London: Blackwell Scientific publications.
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| Paper Type | : | Research Paper |
| Title | : | Application of Seismic Refraction Tomography in Delineating Subsurface Geology and Weathering Structures in Parts of Osubi Delta State |
| Country | : | Nigeria |
| Authors | : | Orji Omafume M || Eze Stanley |
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: | 10.9790/0990-0604011120 |
Abstract: Seismic refraction tomography have been carried out at a site located in Osubi area of Delta state,Nigeria, to establish a database on the subsurface geology and structural setting of the area for engineering purposes. A total of twenty (20) seismic refraction data using forward and reverse shooting methods of lateral distance 2m along each shot points were acquired within the study area. The results indicate the presence of three seismic refraction layers with the first layer having a velocity of 150-366m/s and thickness 1.0-3.3m, representing topsoil. The second refraction layer is composed of lateritic clay with thickness 4.5-10.5m and a velocity of 578-878m/s. The third refraction layer consists of sandy clay with a velocity of 1000-2500m/s. 2D geologic sections computed from transformed seismic velocities show that within the subsurface exists low permeable material (sandy........
Keywords: Seismic refraction, tomography, Seismic velocity, Geologic section.
[1]. Ayolabi, E.A. (2004). Seismic refraction survey of University of Lagos, Nigeria and its implication. Journal of Applied Sciences. Vol.7, No.3, pp 4319-4327.
[2]. Ayolabi. E.A.; Adeoti. L, Oshilaja, N.A., Adeosun, I.O., and Idowu, (2009): Seismic refraction and Resistivity Studies of part of Igbogbo Township, South-West Nigeria. Journal of scientific research and Development. Vol. 11. Pp42 – 61.
[3]. Burton, A.N. (1976). The use of geophysical methods in engineering geology, Part 1: Seismic techniques. Ground Engineering.
[4]. Chiemeke, C.C. and H.O. Aboh, 2012. Delineation of aquiferous layers within the basement complex using joint inversion of seismic refraction tomography and high resolution 3D seismic reflection survey. Arch. Applied Sci. Res., 4: pp400-405.
[5]. Drake, C.L. (1962). Geophysics and engineering. Geophysics 27: 193-197..
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| Paper Type | : | Research Paper |
| Title | : | Compositional variation of Spinel from metamorphic rocks of Digapahandi area, Eastern Ghats Belt, India |
| Country | : | India |
| Authors | : | Sagar Misra || Neeraj Vishwakarma |
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: | 10.9790/0990-0604012127 |
Abstract: Eastern Ghats Belt is a poly-metamorphic terrain, represents high to ultra-high temperature metamorphic condition. The temperature dominant metamorphism has proved by the presence of spinel bearing mineral assemblages like, spinel + quartz, spinel + sillimanite + cordierite, sapphirine + spinel etc. Present paper focus on spinel mineral chemistry, which present as a common phase in both leptynite and khondalite rocks around Digapahandi area of Eastern Ghats Belt. Petrographic observation confirms the presence of two different types of spinel in the rock. Coarse grain anhedral spinels are common in khondalites whereas in leptynites both euhedral and anhedral small spinels are present. EPMA analysis indicates that there is a distinct compositional variation in the spinel from both the rocks, although all the spinel falls under the category of Al-rich spinel series. These evidences clearly reflect that both the rocks have suffered diverse metamorphic history.
Keywords: Spinel, leptynite, khondalite, Eastern Ghats Belt, granulite.
[1]. Barbosa, J., Nicollet, C., Leite, C., Kienast, J.R., Fuck, R.A. and Macedo, E.P. (2006). Hercynite-quartz-bearing granulites from Brejes Dome area, Jequi Block, Bahia, Brazil: Influence of charnockite intrusion on granulite facies metamorphism. Lithos, 92, 537–556, doi: 10.1016/j.lithos.2006.03.064.
[2]. Bhowmik, S.K. (1997). Multiple episodes of tectonothermal processes in the Eastern Ghats granulite belt. Proceedings of the Indian Academy of Sciences - Earth and Planetary Sciences, 106, 131–146, doi: 10.1007/BF02839285.
[3]. Cesare, B. (1994). Hercynite as the product of staurolite decomposition in the contact aureole of Vedrette di Ries, eastern Alps, Italy. Contributions to Mineralogy and Petrology, 116, 239–246, doi: 10.1007/BF00306495.
[4]. Chetty, T.R.K. (2001). The Eastern Ghats Mobile Belt, India: A collage of juxtaposed Terranes. Gondwana Research, 319–328.
[5]. Dobmeier, C.J., and Raith, M. M. (2003). Crustal architecture and evolution of the Eastern Ghats Belt and adjacent regions of India. Geological Society, London, Special Publications, 206(1), 145–168. doi.org/10.1144/GSL.SP.2003.206.01.09.
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| Paper Type | : | Research Paper |
| Title | : | Development of Hydro geological Conceptual Model (Him) To Manage Groundwater Resources in Wade El-Tumult Using Remote Sensing and GIs Technique |
| Country | : | Egypt |
| Authors | : | Ashraf S. Seleem || Mona F. Kaiser || Akram M. Eissa |
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: | 10.9790/0990-0604012839 |
Abstract: The study area is approximately enclosed between latitudes 30o 30/& 30o 40/ N and longitudes 31o 30/& 32o 00/ E. Wadi El-Tumilat is an East-West elongated depression of 52 km length and 7 km width with total area of 364 km2extending from El-Abbasa to Ismailia, Egypt. It is located at the eastern part of Nile River Delta. A hydrogeologic conceptual model (HCM) is a qualitative framework upon which data related to hydrogeologic settings can be considered. The basic components of a conceptual model are the sources of water to the study area and sinks of water from the study area, the physical boundaries of the region, the groundwater flow and solute-transport parameters, and the distribution of hydraulic properties within the study area. Consequently, a HCM allows...............
[1]. Afify, H. F. (2000): Studies on water resources and pollution in some areas of the Suez Canal Province. M. Sc. Thesis, Suez Canal Univ., Ismailia, Egypt.
[2]. Arnous M.O. El-Rayes A.E. (2013). An integrated GIS and hydrochemical approach to assess groundwater contamination in West Ismailia area, Egypt. Arab J Geosci (2013) 6:2829–2842. DOI 10.1007/s12517-012-0555-0
[3]. El Fawal, F. M. and Shendi, E. H., 1991: Sedimentology and groundwater of the Quaternary sandy layer north of Wadi El Tumilat, Ismailia, Egypt. Annals of the Geol. Surv. of Egypt, v. xvii, pp 305-314.
[4]. El Shamy, I. Z. and Geriesh, M. H., 1992: Hydrogeology of West Ismailia Area, Egypt, press, Desert Institute Bul.
[5]. GAD, M. I. El-Kammar, M. M. Ismail, H. M. G. (2015) . Groundwater Vulnerability Assessment Using Different Overlay and Index Methods for Quaternary Aquifer of Wadi El-Tumilat, East Delta,Egypt. Asian Review of Environmental and Earth Sciences ISSN: 2313-8173 Vol. 2, No. 1, 9-22, 2015.
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| Paper Type | : | Research Paper |
| Title | : | Data Integration to Assess Aquifer Vulnerability Potential to Pollution around Ismailia Canal Using Remote Sensing and Gis Techniques |
| Country | : | Egypt |
| Authors | : | Ashraf S. Seleem || Mouna F. Kaiser || Hussam S. Athelib |
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: | 10.9790/0990-0604014053 |
Abstract: Egypt has been suffering from severe water scarcity problem in recent years.Day-by-day dependence on groundwater is gradually increasing in Egypt due to water scarcity problem.The study area is located around Ismailia Fresh-water Canal in the eastern region of the Nile Delta. It extends from the Ismailia city to El-Asher Men Ramadan city, Egypt.The DRASTIC method has been most commonly and widely used for mapping vulnerability in porous aquifers developed by Aller et al., 1987.In the present study, an attempt has been made to assess the groundwater vulnerability of the unconfined aquifer around Ismailia canal area based on DRASTIC method and ARCGIS. Eight hydrogeological and environmental parameters are used to represent the natural hydrogeologic and environmental............
Keywords: Drastic Index, Intrinsic Vulnerability, Groundwater, GIS, Ismailia canal.
[1]. Afify, H.F. (2000): Studies on water Resources and pollution some areas of suez province. M.sc. Thesis, Suez canal Univ ., Ismailia, Egypt.
[2]. Aller.L., Bennett .T.,Lehr.J.H., Petty.R.J. and Hackett. G.,(1987): drastic: a standardized system for evaluating groundwater pollution potential using hydrogeologic settings. U.S Environmental Protection Agency Methodology Report.EPA/600/2-85-018.
[3]. Arnous M.O. El-Rayes A.E. (2013). An integrated GIS and hydrochemical approach to assess groundwater contamination in West Ismailia area, Egypt. Arab J Geosci (2013) 6:2829–2842. DOI 10.1007/s12517-012-0555-0
[4]. Baron, T. (1907): The topography and geology of the district between Cairo and Suez. Surv Dept., Cairo.
[5]. Civita M, De Maio M(1997): SINTACS. Un sistemaparametrico perla valutazione e la cartografiadellavulnerabilita' degliacquiferiall'inquinamento. Metodologia and Automatizzazione, vol. 60.PitagoraEditrice, Bologna, p 191.
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| Paper Type | : | Research Paper |
| Title | : | Evaluating the Economic Potential of Part of Ife-Ilesha Schist Belt, Western Nigeria, Using Airborne Magnetic and Radiometric Dataset |
| Country | : | Nigeria. |
| Authors | : | Nwokeabia Nkiru || Uche Iduma || Ibe Stephen O. |
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: | 10.9790/0990-0604015475 |
Abstract: Evaluation of the part of Ife-Ilesha Schist Belt was done to define the structures, geology and map out alteration zones related to ore deposits. Datasets from airborne geophysical method proved vital for mapping geology and structures within Ondo extension of the Ife-Ilesha Schist Belt. The total magnetic intensity data covering the basement complex was processed and filtered using Reduce to Pole, Analytic Signal (ANSIG) and First vertical derivative (FVD) filters. Trend analysis was applied to the data to produce the residual field component of the data after which the FVD was computed to enhance folds, fractures and lithological contact; the main structural deformation events D1 emplace NNE-SSW structures and D2 emplaced and reoriented D1 structures to NE-SW and these..............
Keywords: Ondo, Ife, Ilesha, Ifewara, Odigbo, aeromagnetic, tilt derivative, analytic signal, radiometric, hydrothermal, alteration, mineral exploration, meneralization.
[1]. Airo, M. L., Loukola, K. (2004). Characterization of sulfide deposits by airborne magnetic and gamma-ray responses in eastern Finland. Ore Geology Reviews, 24 (1):67-84.
[2]. Annor, A. E. (1995). U-Pb zircon age for Kabba-Okene granodiorite gneiss: implication for Nigeria's basement chronology. African Geoscience Review 2 101-105
[3]. Ansari, A. H., and Alamdar, K. (2011). A New Edge Detection Method Based On The Analytic Signal Of Tilt Angle (ASTA) For Magnetic And Gravity Anomalies. Iranian Journal of Science & Technology A2, Pp. 81 – 88
[4]. Armstrong, M., Rodeghiero, A. (2006). Airborne Geophysical Techniques in Aziz. Coal Operators' Conference (pp. 113-131). University of Wollongong and the Australasian Institute Mining and Metallurgy.
[5]. Blakely, R.J., (1995). Potential Theory in Gravity and Magnetic Applications. Cambridge: Cambridge University Press
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| Paper Type | : | Research Paper |
| Title | : | Case Study of Field Mapping For the Woongsang Fault Overlap Zone in the Northern Dongrae Fault Zone, Korea |
| Country | : | Korea |
| Authors | : | Woo-Seok Kim || Myeong-Hyeok Ihm |
|
: | 10.9790/0990-0604017680 |
Abstract: In the southeastern part of the Korean peninsula is composed of Cretaceous sedimentary rocks and late Cretaceous to early Paleogene granitoids. There are fault zones with nearly vertical north-northeast trends that displace these rocks. Surface geometry of Dongrae faults and Woongsang faults show overlapping zone and show mutual crosscutting relationship as revealed by field mapping. The Dongrae Fault and the Woongsang Fault seem to be distributed almost parallel to each other on the surface of the ground, but they cross each other in the Woongcheon area in the northeastern part of the study area. In the Woongcheon area, the Dongrae Fault and the Woonsang Fault overlap each other and represent a complex fault development pattern. This pattern is considered to be related to at least four fault movements of the Woongsang Fault. The Dongrae Fault is not bent in the Woongcheon region, but rather overlaps with the Woongsang Fault, resulting in numerous secondary and tertiary faults, were exposed outcrops.
Keywords: Fault Zones, Overlap Zone, Field Mapping, Woongsang Fault, Korea Peninsula
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[3]. K. Kagohara, T. Ishiyama, T. Imaizumi, T. Miyauchi, H. Sato, N. Matsuta, A. Miwa, and T. Ikawa, Subsurface geometry and structural evolution of the eastern margin fault zone of the Yokote basin based on seismic reflection data, northeast Japan, Tectonophysics, 470, 2009, 319-328.
[4]. I. H. Kim, and M. H. Ihm, Geological structure around Dongrae Fault in Yangsan area, 2017 Conference of Engineering Geological Society of Korea, 2017(in Korean Abstract).
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