Series-1 (Sep. – Oct. 2021)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
[1]. Adetunji, A., Olarewaju, V.O., Ocan, O.O., Ganev, N.Y., and Macheva, L. 2016. Geochemistry and U-Pb zircon geochronology of the pegmatites in Ede area, southwestern Nigeria: A newly discovered oldest Pan-African rock in southwestern Nigeria. Journal of African Earth Sciences 115, pp. 177-190.
[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.
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| Paper Type | : | Research Paper |
| Title | : | GIS based approach for NDVI application to Landsat 7 ETM+ imagery and thematic accuracy evaluation |
| Country | : | Italy |
| Authors | : | Francesco GiuseppeFigliomeni || Claudio Parente |
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: | 10.9790/0990-0905013440 |
Abstract: GIS software allow functions which are suitable for processing remotely sensed images. Map Algebra tools and classification tools are just two examples of GIS functions usable to process remotely sensed data and obtain from them further information that can be represented in the form of thematic map.In a similar way, NDVI (Normalized Difference Vegetation Index), the useful measure of live green vegetation obtained with remotelysensed images, can be easily implemented using Map Algebra applied to the reflectance of the scene in red and infrared bands. Using a classification method, NDVI layer can be transformed in a land cover map distinguishingthree classes: waters (oceans, seas, lakes, rivers, …), soils (plowed land, rocks,constructions, roads, …), vegetation (woods, grasses.....
Key Word: NDVI; Landsat 7 ETM+; GIS; TOA; Map Algebra
[1]. Tomlinson RF. A geographic information system for regional planning. Journal of Geography (ChigakuZasshi), 1969; 78(1): 45-48.
[2]. Montana L, Geographic Information System, International Encyclopedia of Public Health, Elsevier. 2008.
[3]. Shaw DM, Atkinson SF. An introduction to the use of geographic information systems for ornithological research. The Condor, 1990; 92(3):564-570.
[4]. Tomlin CD. Map algebra: one perspective. Landscape and Urban Planning, 1994; 30(1-2): 3-12.
[5]. GISGeography Team. What is Map Algebra? [Raster Math], https://gisgeography.com/map-algebra-global-zonal-focal-local/
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| Paper Type | : | Research Paper |
| Title | : | Identification of the PLTA JELOK TUNTANG Rapid Pipeline (Penstock) Based On the Spectra Response of the Microtremor Method |
| Country | : | Indonesia |
| Authors | : | Nahla Hana || Gatot Yuliyanto || M Irham Nurwidyanto |
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: | 10.9790/0990-0905014148 |
Abstract: Background: There are many cases of pipe leakage caused by the construction of a public works project in an area. In the process of working on it, many obstacles were faced, such as unknown subsurface conditions.Therefore,weneedamethodthatcanbeidentifiedthesubsurfaceconditions,oneof which is the microtremor method. Materials and Methods: This research was conducted through the JelokTuntang hydropower pipeline using the HVSR method. (Horizontal to Vertical Spectral Ratio), namely the comparison of the horizontal.....
Key Word: Pipe, HVSR, dominant frequency, amplification
[1]. Maulana, Yudha, 2019, PertaminaCimahi Pipe Fire Allegedly Due to the Fast Train Project Drill, https://news.detik.com/berita-jawabarat/
d- 4755711/fire-pipe-pertamina-cimahi-suspected-result-drill-project-fast-train, accessed September 10, 2020
[2]. Okada, H., 2003, TheMicroseismic Survey Method: Society of Exploration Geophysicists of Japan, Translated by KoyaSuto,
Geophysical Monograph Series No. 12, Society of Exploration Geophysicists, Tulsa.
[3]. Nakamura, Y., 1989., A Method for dynamic characteristic estimation surface layers using microtremor on the surface, RTRI Report
4, 18-27.
[4]. Wang, J., Liu J., Liu H., Tian Z., Cheng F., 2017, Modeling and locating underground water pipe leak with microseismic data.
Journal of Applied Geophysics, 136, pp. 1-8.
[5]. Yuliyanto, G and Harmoko, U., 2011, Correlation of HVSR Peak Frequency with Object Model Buried in a Sediment Layer,
Department of Physics, UNDIP, Semarang.
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| Paper Type | : | Research Paper |
| Title | : | Sea Water Intrusion Analysis Using Electric Conduct Value And Hydrochemical Approach On Shallow Dug Wells In The Low Of Semarang City |
| Country | : | Indonesia |
| Authors | : | Niken Fitrianasari || M. Irham Nurwidyanto || Sugeng Widada || Rina DwiIndriana || Agus Setyawan |
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: | 10.9790/0990-0905014954 |
Abstract: Background: The lowland area of Semarang City is the center of Semarang City which has a high population density. As a result, the fulfillment of clean water needs continues to increase and the exploitation of underground water causes sea water intrusion. The sea water intrusion that occurred has penetrated into citizens's dug wells which are used to fulfill household water needs. This study aims to determine the distribution of salinity levels and sources of groundwater salinity in shallow wells. Materials and Methods: The method used is by approaching the value of Electrical Conductivity (EC) to determine the pattern and distribution zone of the groundwater salinity. Furthermore, groundwater hydrochemical analysis is performed which is visualized on the Trilinear Piper diagram.....
Key Word: Seawater intrusion, Electrical Conductivity, Trilinear Piper diagram.
[1] Alihar, F., 2018, Population and Access to Clean Water in Semarang City, Indonesian Population Journal, 13, 1, 67 - 76.
[2] Supriyadi, Khumaedi, and Yusuf, M., 2013, Research on Seawater Intrusion in the North Semarang Region using the Inter-Time
Micro Gravity Method, Physics Journal, 3, 1, 90-94.
[3] Kuan, W.K., Jin, G., Xin, P., Robinson, C., Gibbes, B. and Li, L., 2012, Tidal Influence on Seawater Intrusion in Unconfined
Coastal Aquifers, Water Resources Research, 48.
[4] Wijaya, S., 2004, Analysis of Distribution and Tracing of the Salty Sources of Free Aquifer Groundwater in Lower Semarang Area,
Thesis, Department of Physics, Faculty of Mathematics and Natural Sciences, Undip, Semarang.
[5] Nisa, K., Yulianto, T., Widada, S., 2012, Application of Resistivity Geoelectric Methods to Determine Seawater Intrusion Zones in
Genuk District, Semarang. Periodic Physics, 15, 1, 7 - 14.
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| Paper Type | : | Research Paper |
| Title | : | Petrophysical Evaluation of Reservoirs of the X-Field, offshore, Niger Delta, Nigeria |
| Country | : | Nigeria |
| Authors | : | Ikomi, Misan Kelvin || Nfor, Bruno Ndicho |
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: | 10.9790/0990-0905015561 |
Abstract: Understanding reservoir quality is very fundamental in the development of an oil and gas field. This study was aimed at evaluating the distribution of petrophysical properties across the X-field. Wireline log for four wells were critically investigated and five reservoir sand units were defined. Computations were made for parameters such as volume of shale, water saturation, hydrocarbon saturation, density porosity and permeability using exiting principles and equations. Results revealed that most of the reservoir units had volume of shale values not significant enough to hinder primary recovery of hydrocarbon except for RES 05 in well 01, and RES 01, RES 02, and RES05 in well 02 which.....
Keyword Lithofacies, Shaliness, Basinward.
[1]. Archie, G. E. (1942). The electrical resistivity log as an aid in determining some reservoir characteristics: Petroleum Technology,
V.S, pp.54-62
[2]. Asquith, G. and Gibson. C. (1982). Basic Well Log Analysis for geologists: A.A.P.G Publ., Tulsa, pp.216
[3]. Asquith G, and Krygowski D. (2004): Basic Well Log Analysis: AAPG Methods in Exploration Series. 16p.
[4]. Avbovbo A. A. 1978. Tertiary lithostratigraphy of Niger Delta. Geologic notes. AAPG Bull 62(2): pp. 297–306
[5]. Larionov V.V. (1969). Borehole Radiometry: Moscow, U.S.S.R., Nedra.