Series-1 Sep. – Oct. 2021 Issue Statistics
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| Paper Type | : | Research Paper |
| Title | : | Geology, Petrography and Geochemistry of Diatexites around Firo, Northeastern Nigeria |
| Country | : | Nigeria |
| Authors | : | Obodumu A. Lucy || A. I. Haruna || A.S. Maigari || Isah Bunyaminu |
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: | 10.9790/0990-0905010112  |
Abstract: The Study area is located in Firo, in Ganjuwa Local Government Area of Bauchi State. Bounded by latitude N100 25'00'' and N10028'.00'' and longitude E90 51'.00'' and E90 55' 00'', it forms part of Bauchi sheet 149NE. The study addressed the geology and geochemistry of the study area. The geological mapping indicated three (3) morphological units of migmatite;Metatexite, diatexite and Leucosome band. Petrographic studies showed the presence of the various rock forming minerals which include - plagioclase, quartz, biotite, microcline and orthopyroxene as observed within the field of view under plane and crossed polarized light. Variation diagrams show negative correlation between MgO, CaO, TiO2, FeOt and SiO2 but positive correlation with Na2O, K2O indicating the....
Key Word: Metatexite, Diatexite, Leucosome band, Microcline,Firo,
[1]. Brown, M., 1973. The definition of metatexites, diatexites and migmatites. Proc. Geol. Assoc. 84, 371–382.
[2]. Oyawoye, M.O., (1962). On an Occurrence of Fayalite Quartz Monzonite in the Basement Complex around Bauchi, Northern Nigeria. Geol. Mag. Vol. XCVIII, No. 6.
[3]. Ferré, E.C., Gleizes, G., Bouchez, J.L. and Nnabo, P.N. (1993): Internal fabric and strike-slip emplacement of the Pan- African granite of Solli Hills, northern Nigeria. Tectonics, 1205–1219.
[4]. O' Connor, J. T. (1965). A classification of quartz rich igneous rock based on feldspar ratio. United States Geological Survey Paper 525-B, 79-89.
[5]. Sawyer, E.W. (1998): Criteria for the recognition of partial melting. Phys. Chem. Earth (A) 24, 269-279
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| Paper Type | : | Research Paper |
| Title | : | Ground water vulnerability in Parts of Yenagoa, Southern Niger Delta, Nigeria |
| Country | : | Nigeria |
| Authors | : | Willabo A. Miepamo || Ama Otele || Andy Bisong Etta || Wodu Douye Pere-Ere |
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: | 10.9790/0990-0905011318 |
Abstract: This study on aquifer vulnerability assessment in certain parts of Yenagoa, Bayelsa State, Southern Niger Delta, Nigeria, adopted the use of DRASTIC method based on geographic information system (GIS)model to delineate areas susceptible to contamination. Seven hydrogeologic parameters were applied for the aquifer vulnerability evaluations which include depth to water table, net recharge, soil media, impact to vadoze zone, aquifer media, topography, and hydraulic conductivity. Data relating to the seven hydrogeologic parameters of the model were obtained and transformed in the model into seven maps by GIS to develop the DRASTIC vulnerability map which shows the three different forms of aquifer vulnerability namely high, moderate, and low zones. The communities within.....
Key Words: Aquifer, GIS, Vulnerability, DRASTIC,
[1]. Akana, T. S. George, G.C. and Oki, O.A.( 2002): Aquifer Vulnerability Assessment in Some Towns of Yenagoa, South-South Nigeria, Science and Technology 6: 15-23.
[2]. Aller, L. Bennet, T. Hehr, J. H.Petty, R. J. and Hackett, G. (1987): DRASTIC: A standardized system for evaluation groundwater pollution potential using hydrogeologic settings. United States Environmental Protection Agency, Ada. Ok, EPA, 455
[3]. Al-Adamat, R.A.N, Foster, I.D.L. and Baban, S.M.J. (2003): Groundwater vulnerability and risk mapping for the Basaltic aquifer of the Azraq basin of Jordan using GIS, remote sensing and DRASTIC. Appl Geogr 23:303–324
[4]. Amajor, L.C, and Ofoegbu, C.O. (1988): Determination of polluted aquifers by stratigraphically controlled biochemical mapping; Example from the Eastern Niger Delta, Nigeria. Groundwater and Mineral Resources of Nigeria, 15: 62 – 73.
[5]. Baalousha, H. (2006): Vulnerability assessment for the Gaza Strip, Palestine usingDRASTIC. Env Geol 50:405–414.
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| Paper Type | : | Research Paper |
| Title | : | Hornblende-bearingS-type Porphyritic Granite from the Basement complex terrain of Southwestern Nigeria |
| Country | : | Nigeria |
| Authors | : | Akinola, O. O. || Ghani, A. A || OlaOlorun, O. A |
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: | 10.9790/0990-0905011933 |
Abstract: This study reports Petrology and petrochemistry of porphyritic granite in the Precambrian Basement complex of Idanre, southwestern Nigeria. Systematic geological mapping revealed Idanre area is underlain by gneisses, Pan-African granite and charnockite. The granitoid occur as intrusive bodies now exposed as plutons within the host migmatite country rock. The migmatite occur as low-lying units,the granite form prominent inselbergs while charnockite occur at the core of the porphyritic granite as small rounded bodies.Optical investigation indicates that the granite is containquartz, feldspar, biotite and hornblende.Analytical result reveals silica content in the granite ranges......
Keywords: Idanre; Pan-African granite; porphyritic; S-type granitoid; peraluminous
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[2]. Ajayi, T.R., 1981. On the geochemistry and origin of the amphibolites in Ife-Ilesha area, southwestern Nigeria. Journal of Mining and Geology, vol. 17, No. 2, pp. 179-195.
[3]. Atherton, M. P. (1993). Granite magmatism. Journal of the Geological Society, 150(6), 1009-1023.
[4]. Azman, A. G., 2000 The Western Belt Granite of Peninsular Malaysia: some emergent problems on granite classification and its implication, Geosciences Journal, Vol.4, 2000, pp283.\
[5]. Barbarin, B. (1990). Granitoids: main petrogenetic classifications in relation to origin and tectonic setting. Geological Journal, 25(3‐4), 227-238.