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| Paper Type | : | Research Paper |
| Title | : | Basinal Configuration And Intrasediment Intrusives As Revealed By Aeromagnetics Data Of South East Sector Of Mamfe Basin, Nigeria. |
| Country | : | Nigeria |
| Authors | : | OBI, D . A . , OBI, E. O., OKIWELU, A. A. |
 |
: | 10.9790/0990-0150108  |
Abstract: Five aeromagnetic maps on a scale of 1:100,000 were analysed using the horizontal gradient magnitude and 2.5D forward modeling method in the South east Sector of mamfe basin Nigeria. The data was manually digitized and filtered using polynomial fitting method to obtain a residual map, reduction to the pole was done after map merging prior to filtering. The HDep and Saki softwares were used in determining the sediments thickness, types of intrusive, and basin configuration. The results identified (17) seventeen intrusives and the basin configuration made of horst and graben structures, the sediment thickness from both methods range between 0.5km–4.3km, the areas with the highest accumulation of sediments (2.6km – 4.3km) is within Edor area in Bansara, these area also has three major intrusives which may serve as a source of heat for thermal maturation or over maturation of these sediments.
Keywords: configuration,forward modeling, polynomial fitting
[1]. Adighije, C. I. (1981). Gravity study of the Lower Benue Trough, Nigeria Geol Mag., 118 (1), 59-67.
[2]. Ajakaiye, D. E., (1981) Geophysical Investigation in the Benue Trough Review Earth Evol. Sci, 2, 110-125.
[3]. Akpan, E. B and Nyong, E. E. (1987). Trace fossil assemblage and depositional environment of Turonian Calcareous sandstones in Southern Benue Trough, Nigeria. J. African Earth Sci. 6, pp 175-176.
[4]. Beltrao, J. E.Silva, J. B, C and Coasta, J. C. (1991). Robust Polynomial fitting method for regional gravity estimation. Geophysics 56 (1), 80-89.
[5]. Blakely, R. J. and Simpson, R. W (1986). Approximating edges of source bodies from magnetic and gravity anomalies –Geophysics, 51 (7), 1494-1498.
[6]. Dobrin, M. B. and Saviit, H. (1988). Introduction to Geophysical prospecting (4th ed ) Newyork: McGraw-Hill Book Company.
[7]. Fairhead, J. D. and Okereke, C. S. (1987). A regional gravity study of the West African rift system in Nigeria and Cameroon and it's tectonic interpretation. Techonophysics, 143, 141-159.
[8]. Kangkolo, R., (2002). Aeromagnetic study of the mamfe basalts of South Western Cameroon. Journal of the Cameroon Academy of sciences vol. 2 no 3. Ichnostratigraphy and paleoenvironments of the Benue trough, Nigeria. Journal of mining and Geology vol. 33 No2 pp 115-126.
[9]. Obi, D. A., Okereke, C. S., Egeh, U. E. and Olagundoye, O. O., (2008). Aeromagnetic modeling in evaluating the hydrocarbon potential of the basement of the Calabar flank, South eastern Nigeria Journal of mining and Geology vol 44 (2) pp. 151-160.
[10]. Okereke, C. S., Otoegbu, C. O, and Ezeayim V. I. (1990). Cretaceous sediment thickness in the Benue trough gravity Interpretation. Bolletino DiGeotisica Teorica Ed Applicata, 32, 257 – 266.
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| Paper Type | : | Research Paper |
| Title | : | Uranium migration history in the igneous and metamorphic rocks of Solaf-Umm Takha area, based on multi-variate statistical analysis and favorability indices, central south Sinai, Egypt. |
| Country | : | Egypt |
| Authors | : | Tamer E. Attia, El-Arabi H. Shendi |
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: | 10.9790/0990-0150920 |
Abstract: The present study deals with the application of three different analytical techniques on the recorded ground gamma ray spectrometric measurements in order to detect the radioelements content specially Uranium in Solaf-Umm Takha area, south Sinai, Egypt. These techniques include Uranium migration (in and out), Uranium favorability index and multi-variate statistical analysis including first and second principal component and factor scores. The obtained results have indicated that Umm Takha granite and the quartzo – feldspathic gneiss as well as the El-Sheikh granite are Uranium source rocks with low favorability indices. However the application of favorability index technique has proved to be an effective tool in igneous and metamorphic environments to indicate Uranium depletion from source rocks. The integration of original uranium content, uranium migration rate and Uranium favorability index indicated that Uranium migrated from the eastern and southern parts and has been ultimately accumulated in the western and northern parts of the study area. Topographically, uranium has been migrated from the high relief mountainous region to the drainage divide of Solaf-Umm Takha valleys. Therefore, uranium migration history proves its validity in distinction between syngentically-mineralized source rocks and secondary enriched rocks in the investigated area.
Keywords : factor scores, favorability indices, Sinai, spectrometry and uranium migration.
[1] L.M.S. Magdy, A.A. Ammar, E.M. El Kattan, I.A. El Kassass, The role of Aeroradiometry in modifying geology and identifying anomalous zones, Serbal-Nukhull area, Sinai Peninsula, Egypt. Nuclear Materials Authority. Nucl. Geophys. Vol. 9. No. 2. 1995,147-168.
[2] Darnley, K.L. Ford, A regional airborne Gamma-ray surveys review; in Proceedings of Exploration, 87: Third Decennial International Conference on Geophysical and Geochemical Exploration for Mineral and Groundwater, edited by G.D. Garland, Ontario, Geol. Surv. of Canada, Special, 3, 1989, 960p.
[3] W.F. Hume, The topography and geology of the Peninsula of Sinai (southeastern portion). Geological Survey of Egypt, Cairo, 1906, 280pp.
[4] W. F. Hume, Geology of Egypt. II. The fundamental Precambrian rocks of Egypt and the Sudan: Geol. Surv. of Egypt, Cairo, Egypt, 1935,Part I, The metamorphic rocks: pp. 1–300; Part II, The later plutonic and minor intrusive rocks, pp. 301–688.
[5] J. Ball, The Geography and Geology of the West Sinai, Egypt. Egyptian Geological Survey, 1916, 219p.
[6] M.K. Akaad, The magmatic gneisses of Wadi Feiran, Sinai, Egypt. Assiut Science and Technology Bulletin, Assiut University, 2, 1959, 211-237pp.
[7] S. El Gaby, A.M. Ahmed,. The Feiran-Solaf gneiss belt SW Sinai, Egypt. I.A., G. Bull. No.3, Vol.4, 1980, 95-105 pp.
[8] A.A. Ahmed, Geology of the Area Around Feiran Oasis, Sinai. Ph.D. Thesis. Assiut Univ., Egypt 1970.
[9] A.A. Ahmed,. Reconsidered view on Feiran–Solaf Gneisses southwest of Sinai, Egypt. Bull. Fac. Sci. Assiut Univ. 10, 1981, 131–142.
[10] A.M. Hegazi, Structural studies on Feiran Oasis area, Central Sinai, Egypt. M.Sc. Thesis, Suez Canal Univ., Egypt. 1988, 81p.
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| Paper Type | : | Research Paper |
| Title | : | Use of Statistical Parameters in the Sedimentological Study of Conglomerate Deposits in Northeastern Part of Akwa Ibom State, Niger Delta Basin, Nigeria |
| Country | : | Nigeria |
| Authors | : | Udo, I. G., Mode, A. W. |
|
: | 10.9790/0990-0152127 |
Abstract: Conglomerates and pebbly sandstone abound along a belt of about 50km long and 11km wide in northeastern part of Akwa Ibom State. Granulometric analysis of 29 samples show the deposits to be poorly to moderately sorted, having sorting coefficient values ranging between 0.63ф to 1.41ф. Pebble morphometric analysis of the conglomerates showed that the mean values of the various morphometric parameters range as follows: flatness ratio (S/L = 0.39-0.58), elongation ratio (I/L =0.64-0.78), maximum projection sphericity (Ψ P = 0.60-0.77), Oblate Prolate index (Ō P = -1.98 to 4.13), coefficient of flatness (39.25-57.86). Roundness index determined for the pebbles through simple comparism with Power's (1953) roundness chart averaged 0.232. Interpretation of pebble morphometric and granulometric results indicate a fluvial environment of deposition for the deposits.
Keywords: Conglomerate, deposit, environment, fluvial, roundness
[1]. L. C. Amajor, Alluvial fan Facies in the Miocene-Pliocene coastal plain sand, Niger Delta, Nigeria, Journal of Sedimentary Geology, 49, 1986, 1- 20.
[2]. S. W. Petters, Akwa Ibom State Physical Background, Soils and Land use Ecological Problems, Technical Report of the Task Force on Soil and Land Use Survey, Akwa Ibom State ( Government Printers, Uyo, 1989).
[3]. R. A. Reyment, Aspects of the Geology of Nigeria, (Ibadan University Press, Ibadan, 1965).
[4]. R. C. Wilson, The geology of th Eastern Railway, Section 1, Port Harcourt to Enugu, Geolological Survey of Nigeria Bullettin, 8 1925, 1-95.
[5]. O. S. Adegoke, Eocene stratigraphy of southern Nigeria, Bull. B. R.G.M. Mem. .69, 1969, 23-48.
[6]. I. Arua, V. R. Rao, New stratigraphic data od Eocene Ameki Formation, Southeastern Nigeria., Journal of African Earth Science, 3, 1986, 1-7.
[7]. O. K. Agagu, E. A. Fayose and S. W. Petters, Stratigraphy and Sedimentation in the Senonian Anambra Basin of Eastern Nigeria, Nigerian Journal of Mining and Geology, 22, 1985, 25-36.
[8]. S. W. Petters, Stratigraphic Evolution of the Benue Trough and its Implications for the Upper Cretaceous Paleogeograhy of West Africa, Journal of Geology, 86, 1978, 311-322.
[9]. C. S. Nwajide, A lithostratigraphic analysis of the Nanka Sands, southeastern Nigeria., Nigerian Journal of Mining and Geology,16, 1979, 103-109.
[10]. W. A. Berggren, Paleocene Biostratigraphy and Planktonic Foraminifera of Nigeria (West Africa), Proc. 21st Inter. Geol. Cong. Copenhagen, 6, 1960, 41-55.
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| Paper Type | : | Research Paper |
| Title | : | Development Programmes And The Tribal :A Study On The Santals Of Birbhum District |
| Country | : | India |
| Authors | : | Dr. Prasasti Ghoosh |
|
: | 10.9790/0990-0153539 |
Abstract: ''A tribe is viewed historically and developmentally as a social group existing before the development of ,or outside of state'' (Wikipedi),1. The term 'Adivasi' is implied to the tribal people. The term Adivasi( Adi=original and vasi= inhabitant) has become known to many people. The ILO has classified them as indigenous people and they are living in this subcontinent from unrecorded period. The scheduled tribe first appeared in the constitution (Article 366(25)) of India. India the vast geographical area with diversified ecological ,
[1]. Wikipedia, p1.
[2]. Das,A.K(1991),Scheduled Tribe-A Socio-Economic and Cultural Profile in West Bengal, Bulletin of C.R.I, Kolkata, p2-4.
[3]. Raha,M.K(1989);Introduction in Tribal India(vol-1),Ed.Manis Kr Raha, Gian Publishing House,Delhi,pxxii-xxiv
[4]. Dr. Prasasti Ghosh(1993),Demographic Profile and Changing Occupational Character and Economic Status of the Santhals of
Birbhum District (thesis),
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| Paper Type | : | Research Paper |
| Title | : | Paleoclimate Reconstruction during Mamu Formation (Cretaceous) Based on Clay Mineral Distributions |
| Country | : | Nigeria |
| Authors | : | Odoma, A. N., Obaje, N. G., Omada, J. I., Idakwo, S. O. & Erbacher, J. |
|
: | 10.9790/0990-0154046 |
Abstract: Paleoclimate was reconstructed by the clay mineral assemblages within the age of Cretaceous (Campanian - Maastrichtian) of the Mamu Formation. To compare with clay mineral assemblages in this formation, selected samples were collected from sections along the road cuts from the King Petrol Station up the Miliken Hills and at the left bank of River Ekulu near the bridge to Onyeama mine, around Iva Valley and along Enugu Port-Harcourt road in Enugu State. Collected samples were prepared using standard clay mineral methodology. Their identification was made on X-Ray diffractographs, Kaolinite covered a range of 22-45%, its variation style in this formation could be a marker of climate changes from wet to dry which is supported by the lithological changes. Illite percentage varies from 5-10 and increases from Enu.1.1-1.5 to Enu.2.1-2.5. This may be due to dominant dry climate. Montmorrilonite ranges from 7 – 10% and its presence is due to terrestrial depositional condition. It seems thus, the present results can be indicated a possible procedure for ancient climate changes evaluation.
Keywords: (Clay minerals, Paleoclimate, XRD, Mamu formation
[1]. Agumanu, A.E. (1989) The Abakaliki and Ebony Formations: subdivisions of the Albian Asu River Group in the southern Benue Trough, Nigeria. Journal African Earth Sciences,9,pp, 195-207.
[2]. Akande, S.O. and Muche, A. (1989) Mineralogical, textural and paragenetic studies of the lead zinc-zinc-copper mineralization in the lower Benue Trough (Nigeria) and their genetic implications. Journal of African Earth Sciences,9,pp.445-456.
[3]. Akande, S.O., Hoffknecht, A. and Erdunann, B.D. (1992) Rank and petrolographic composition of selected Upper Cretaceous and Tertiary coals of Southern Nigeria. International Journal Coal Geology,20,pp.209-224.
[4]. Brown, G. and Brindley, G. W. (1984) X-ray diffraction procedures for clay mineral identification. Crystal Structures of Clay Minerals and Their X-ray Identification (Brindley, G. W. and Brown, G., eds.), Mineral. Soc., London, Monogr. 5, 305–360.
[5]. Churchman, G.J. (2000) The alteration and formation of soil minerals by weathering. In Handbook of soil Science (Summer, M.E., ed.). CRC Press New York, 1, F3-27.
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| Paper Type | : | Research Paper |
| Title | : | Hydrogeo-Electric Characteristics of Upper River Shemankar Basin, Jos Plateau: A Case Study of Jibam and Environs |
| Country | : | Nigeria |
| Authors | : | Longpia, C. B., Dakwo, P. D., Lar, U. A. |
|
: | 10.9790/0990-0154757 |
Abstract: A detailed hydrogeo-electric investigation of Jibam Village and environs was carried out to determine the peculiar difficult hydrogeological disposition of the area which result in well and borehole failures. The area is underlain by Basement Complex rocks (migmatites, granite gneiss and pegmatites) and Newer basalts. A total of 70 vertical electrical sounding (VES) were carried out within the study area. The field data were interpreted using computer aided programe (Win Resists) and from the geo-electric parameters, 4-5 geoelectirc layers were identified which include- Topsoil from 0-3.8m, Weathered basement/basalt from 0.1-21m, Basalt/fractured basalt from 0.1-20m, Sub-basalt alluvium from 20-30m and Fresh basement from 10.1-∞m, and characterized by variable resistivity value range from 93-634 ohm/m, 23-152 ohm/m, 178-693 ohm/m, 28-70 ohm/m and 100-1296 ohm/m respectively. The interpreted geoelectric parameters from the VES model curves were used to produce geo-electric sections, isopach maps, bedrock relief/structural maps which aided in the development of the overall groundwater potential map of the area. This study revealed that basement depressions with moderate overburden and areas underlain by sub-basalt alluvium and/or fractured basalts are areas with low and medium-high groundwater potential respectively.
Keywords: Hydrogeo-electric investigation, Basement Complex rocks, Basalts, VES model curves, River Shemankar and Jos Plateau.
[1]. Ajaegbu, H.I, Adepetu A.A, Ajakpo J, Ihemegbulem V.C, Jumbo S.E, Olaniyan J.A, Okechukwu G.C and Schoeneich K (1992): Jos Plateau Environmental Resources Development Programme: Jos Plateau Excursion Guide pp1.
[2]. Dakwo, P.D (2012): Hydrogeophysical Characteristics of Jibam and environs around Upper River Shemankar Basin, North Central Nigeria, Unpublished MSc Thesis, University of Jos
[3]. Longpia, C.B (2003): Hydrogeo-electric Characteristics of the Upper River Ndai Basin around the Kerang and Ampang Volcanoes, Jos-Plateau. Unpublished MSc Thesis, University of Jos.
[4]. Longpia, C.B (2010): Hydrogeo-electric Investigation of the Upper River Ndai Basin around the Ampang-Kerang volcanic line, Jos-Plateau. Journal of Engineering Science and Technology, Vol. 5 (3) PP 152-161.
[5]. Macleod WN, Turner DC, Wright EP (1971): Geology of the Jos Plateau. Vol.1 Bulletin 32, PP 1-118.
[6]. Omosuyi GO, Ojo JS, Erikanselu PA (2003): Geophysical Investigation for groundwater around Obanila-Obakekere in Akure Area within the basement complex of southwestern Nigeria. Journal of Mining and Geology Vol.39 (2) PP 109-116.
[7]. Offodile M.E. (2002): Groundwater Study and Development in Nigeria, 2nd edition. Published by Mecon Geology and Engineering Services, Jos.
[8]. Okhue ET and Olorunfemi MO (1991): Electrical Resistivity Investigation of a Typical Basement Complex Area. The Obafemi Awolowo University, Campus Case Study. Journal of Mining and Geology Vol. 27(2), PP63-69.
[9]. Olorunfemi MO and Okhue ET (1992): Hydro geologic and Geologic Significance of a Geo -electric Survey at Ile-Ife. Journal of Mining and Geology (Vol. 28(2) PP 221-229.
[10]. Olorunfemi MO, Ojo JS and Akintunde OM (1999): Hydro geophysical Evaluation of the Groundwater Potentials of Akure Metropolis, SW Nigeria. Journal of Mining and Geology Vol. 35(2), PP 207-228.