Series-1 (Mar. – Apr. 2021)Mar. – Apr. 2021 Issue Statistics
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Abstract: Uncommon presence of rare-metal mineralization is recorded in the mineralized pegmatite injected in Wadi El Sheih older granitoids at the central Eastern Desert of Egypt. The studied mineralization was found as distinguishable megascopic crystals of economic minerals scattered within the pegmatitic bodies. Detailed mineralogical and chemical investigation were carried out using microscopic examinations, x-ray diffraction (XRD),scanning electron microscope (SEM) providing with energy-dispersive spectrometer (EDS) and x-ray fluorescence (XRF). These studies revealed the presence of several valuable minerals such as euxenite-(Y), fergusonite-(Y), allanite-(Ce), and xenotime-(Y), in addition to uranothorite and zircon. Accordingly, the mineralized Wadi El Sheih pegmatite can be considered as a promising target ore for its rare metal mineralization that includes mainly Nb, Ta, Y, U, Th, and REE together with Zr and Hf.
Keywords: Rare-metal pegmatite; Euxenite-(Y); Fergusonite-(Y);Allanite-(Ce);Wadi El Sheih older granitoids
. Abdalla H.M.,Helba H.A and Mohamed F.H., 1998, Chemistry of columbite-tantalite minerals in rare metal granitoids, Eastern Desert, Egypt.Mineralogical Magazine, 62, 821-836.
. Abdalla H.M., and El Afandy A.H., 2003, Contrasting mineralogicaland geochemical characteristics of two A-type pegmatite fields, Eastern Desert, Egypt. Egyptian Mineralogists, 20,287-328.
. Abdel Warith A., Raslan M. F. and Ali M.A., 2007,Mineralogyand radioactivity of pegmatite bodies from the granitic pluton of Gabal Um Tager El-Tahtani area, Central Eastern Desert, Egypt. The 10th International Mining, Petroleum, and Metallurgical Engineering Conference, March 6-8 2007, Mining, Code No. M3, Faculty of Engineering- Cairo University.
. Abd El Wahed A. A.,Raslan M.F., and El Husseiny M.O., 2005, Radioactive pegmatites of Um Lassifa granitic pluton, Central Eastern Desert, Egypt: Mineralogical investigation, The 9th International Mining, Petroleum and Metallurgical Engineering Conference, February 21-24, 2005, Faculty of Engineering-Cairo University, 12.
. Abd El Wahed A. A.,Abd El Mottalib A. A. and Sadek A.A.,2006, Mineralogical and radio-metrical characteristics of rare- metal pegmatite at southern HumrWaggat Pluton, Central Eastern Desert, Egypt. Journal of Middle EastReserch Center.Ain Shams University, Cairo, 19, 105-116.
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|Paper Type||:||Research Paper|
|Title||:||Integrated watershed studies of Naigaon Odha (sub tributary) of Karha River, Purandhar taluka, Pune –A case study|
|Authors||:||Sandeep A. Meshram || Sumedh R. Warghat|
Abstract: Water is a key driver of economic and social development and is one of the fundamental elements in sustaining the integrity of the natural environment. It is the major renewable resource amongst the various natural resources. Water being an vital constituent for all life supporting processes, its assessment, conservation, development and management is of great concern for all those who manage, facilitate and utilize, issues related to water resources development and management .These studies should not be carried out in isolation but should be coupled and inter-related with other human activities. The water shed programmes would benefit immensely from systematic hydro geological studies as groundwater resources form an important aspect in most watershed development programmes (Kulkarni, 1998). Effective watershed management can prevent community water shortages, poor water quality, flooding and erosion. The expense of undertaking watershed management is far less than the cost of future remediation......
Keywords: watershed, Morphometry, social changes; sustainability.
. Ashok S. Sangle, Pravin L. Yannawar - Morphometric Analysis of Watershed of Sub-drainage of Godavari River in Marathwada, Ambad Region by using Remote Sensing
. Athavale R. N. and Rangarajan G. R. (1990) Natural recharge measurements in hard-rock region of semi-arid India.
. Bhavana Umrikar - GIS Technique in Management of Watershed Developed along the Konkan Coast, Maharashtra, India
. Bondre N., Dole G. 5., Phadnis V. M. Duraiswami R. and Kale V. S. (2000). Inflated pahoehoe lavas from Sangamner area of the western Deccan Volcanic Province. Curr. Science, 78(8), 1004-100.
. Bouwer, H. 1996. Issues in artificial recharge. Water Science and Technology, Vol. 33, 381-390
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Abstract: Airborne magnetic dataset Studies were carried out in parts of Southeastern Nigeria. The study area is bounded by latitudes 5o00' N and 6o30' N and longitudes 7o00' E and 8o30' E, covering an area extent of about 27,225km2. Airborne magnetic data covering the study area was acquired, processed, and interpreted with the aim of appraising geothermal potential in the study area. Various data enhancement techniques were carried out on the magnetic data in order to filter unwanted signals. Analysis such as sediment thickness, Curie point Depth, Geothermal gradient and heat flow of the study area were carried out. The Curie Point Depth obtained in the study area ranges from 5699.183 to 20156.59km with the shallow depth at Ugep, Afikpo, and Ezeagu. Geothermal gradient within the study area ranges from 28.757 and 83.0980ckm-1. Heat flow ranges from 71.936m wm-2 to 207.746mwm-2. The result reveals that, the Curie Point Depth varies inversely with heat flow. This shows that heat flow in the study area decreases with increases in curie depth. Airborne Magnetic, Curie Point Depth, Geothermal Gradient, Heat flow, Southeastern Nigeria.
. Akpabio, I. O. and Ejedawe, J. E. (2001). Temperature variations in the Niger delta subsurface from continuous temperature logs. Global. Jour. Of Pure and Applied Sci. (7), 137-142
. Akpabio, I. O. and Ejedawe. J. E. (2010). Thermal conductivity estimates in the Niger delta using lithologic data and geophysical well logs. Current science, 98(3), 10
. Anakwuba, E. K., and Chinwuko, A. I. (2015). One Dimensional Spectral Analysis and Curie Depth Isotherm of Eastern Chad Basin, Nigeria. Journal of Natural Sciences Research, ISSN 2224-3186 (Paper) ISSN 2225-0921. Vol.5, No.19, 2015
. Appiah, D. (2015). Aeromagnetic and Airborne Radiometric data interpretation on chirano Area of the sefwi Gold Belt. Unpubl. Thesis 112p
. Bhattacharyya, B.K., and Morley L.W. (1965). The delineation of deep crustal magnetic bodies from total field aeromagnetic anomalies. J Geomagnetism and Geoelectricity 17:237–252
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Abstract: Magnetic studies was conducted in Abia State and parts of Imo, Enugu, Ebonyi and Benue states covering an area of about 48,400 km2 and lies between latitude 50 0'N to 700'N and 700'E to 800'E. Eight data sheets of aeromagnetic survey with sheet numbers; 287 (Nsukka), 288 (Igumale), 301 (Udi), 302 (Nkalagu), 312 (Okigwe), 313 (Afikpo), 321 (Aba) and 322 (Ikot-Ekpene) were obtained from the Nigeria Geological Survey Agency and analysed to obtain the Total Magnetic Intensity (TMI) and the Source Parameter Imaging (SPI) of the study area. Results of the analyses show that the magnetic intensity in the study area ranges from -102.8 nT to 145.6 nT while the source.......
Keywords: Magnetic Anomaly, Mineral, hydrocarbon, Total Magnetic Intensity, Source Parameter Imaging..
. Telford, W. M.; L. P. Geldart; R. E. Sheriff. "3. Magnetic methods". Applied geophysics (2nd, repr. ed.). Cambridge: Cambridge Univ. Press. 2001. pp. 62–135. ISBN 0521339383.
. Moskowitz, B. M., Jackson, M., Chandler V. Geophysical Properties of the Near-Surface Earth: Magnetic Properties, Editor(s): Gerald Schubert, Treatise on Geophysics (Second Edition), Elsevier. 2015. Pages 139-174. ISBN 9780444538031,
. Reeves Colin. Aeromagnetic survey; principles practice and interpretation. Geosoft Inc. 2005
. Mussett, Alan E.; Khan, M. Aftab. "11. Magnetic surveying". Looking into the earth: an introduction to geological geophysics (1. publ., repr. ed.). Cambridge: Cambridge Univ. Press. 2000 pp. 162–180. ISBN 0-521-78085-3.
. Reynolds John M. An Introduction to Applied and Environmental Geophysics 2nd Edition. John Wiley & Sons, Ltd. 2011.
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Abstract: The concentrations of ten heavy metals (Mn, Fe, Cu, Cr, Co, Cd, Ni, Pb, Hg and Zn) were investigated from the water and sediments samples of Lapai/Agaie reservoir during the dry and rainy seasons so as to monitor seasonal effects. Atomic absorption spectrometry was used due to its advantage of being highly specific, availability and selectivity. The results obtained showed that concentrations of Mn, Cr, Cd, Ni, Hg and Pb in the samples during the periods of investigation slightly exceeded the WHO recommended limits but mostly within limits of sub-lethal effect. However, the concentrations of Zn, Cu, Co and Fe in the samples were below the recommended maximum permissible levels. Samples of sediments generally recorded the highest concentrations of heavy metals for both dry and rainy season as compared to water samples. Constant monitoring of heavy metals and control program should be instituted in the reservoir to protect the people using the dam as a source of water for domestic and agricultural purposes..
Keywords: Heavy metals, concentration, seasonal variation, Lapai/Agaie reservoir
. Adekola FA and Eletta OAA (2007). A study of heavy metal pollution of Asa river, Ilorin, Nigeria; Trace metal monitoring and geochemistry Environ Monit Assess, 125:157-163.
. Akan, J. C., Abdulrahman, F.I., Sodipo, O.A. and Akandu, P.I. (2009) Bioaccumulation of some heavy metals of six fresh water Fishes caught from Lake Chad in Doron buhari, Maiduguri, Borno state, Nigeria, Journal of applied sciences in environmental sanitation, 4:103-114.
. Akponine, J.A andUgwumba, O.A (2014). Physico-Chemical Parameters and Heavy Metals Contents of Ibuya River in Old Oyo National Park, Septeri, Oyo States, Nigeria. African Journal Online Vol. 12 pp.54-63.
. Alaa, G.M., Osman, W.K. (2010) Water Quality and heavy metal monitoring in water, sediments, and tissues of the African catfish Clariasgariepinus (Burchell, 1822) from the River Nile, Egypt. Journal of Environmental Protection, 1:389-400.
. Aloh, G.O. and Obasi, N.A (2016). Effects of Lead-Zinc Mining Activities on Water and Soil Quality in Ameka Mining Area of Ezza South, Ebonyi State, Nigeria
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|Paper Type||:||Research Paper|
|Title||:||Etude des Perturbations du Déplacement des Bornes Magnétiques du Globe Terrestre vu du Sud-Kivu en RDC|
|Authors||:||Justin MUDEKUZA CHIBWANA || Albert KABASELE YENGAYENGA|
Abstract: Résumé : Contexte : Boussoles, GPS, système de guidage des avions, tous dépendent du pôle Nord magnétique. Mais ce Nord magnétique se déplace très rapidement sur l'échelle mondial depuis les années 1980 et atteint 50km par an au point que les scientifique se demande si ça ne va pas nous amener rapidement vers une inversion des pôles et ainsi perturber le fonctionnement normale de la communication, l'électricité et créer des maladies chez les êtres vivants. Matériel et méthodes : on a utilisé le Satellite NOAA et le GPS pour obtenir les données mensuelles des Déclinaison et Inclinaison sur une période allant de 1920 à 2020........
Keywords: Pole reversal, perturbation, Magnetic declination, Magnetic tilt, magnetic pole
. [PDF] Commissariat à l'énergie atomique et aux énergies alternatives, « Magnétisme de la Terre et du Soleil » [archive], sur .cea.fr, 2007
. « Earth's Inconstant Magnetic Field » [archive]
. Alexis RUFFENACH , 2013, Observation et modélisation de l'érosion des nuages magnétiques solaires par reconnexion magnétique, thèse , Université de Toulouse.
. Arnaud CHULLIAT, « PÔLES DÉRIVE DES », Encyclopædia Universalis [en ligne], consulté le 22 février 2021. URL : https://www.universalis.fr/encyclopedie/derive-des-poles/
. Carlo Laj et Catherine Kissel, « Geomagnetic field behaviour during the Iceland Basin and Laschamp geomagnetic excursions: a simple transitional