GEOELECTRIC MAPPING FOR ACCUMULATION OF TAR SANDS AT IMEGUN VILLAGE, IJEBU-EAST LOCAL GOVERNMENT OF OGUN STATE, SOUTH-WESTERN, NIGERIA
DOI:
https://doi.org/10.46881/ajsn.v5i0.129Keywords:
Accumulation, Electrical resistivity, Geoelectric layers, Imegun Village and Tar sand.Abstract
Tar sands are primarily aggregates of tar sands, clay riched in minerals, heavy oil and sometimes water. This research was conducted to map the tar sand deposits at Imegun village in Ijebu-Itele area of Ogun State, Southwestern, Nigeria. Five (5) vertical electrical sounding with Schlumberger configuration and five (5) dipole-dipole configurations were used in this study using ABEM Terrameter SAS 1000. The results were interpreted using WINRESIST and DIPRO software respectively. Four to five geoelectric layers were delineated relative to one another; top soil, sandstone, fine-grained sand, tar sand and sand. The occurrence of tar sand deposits in the study area was observed at resistivity value of 4132Ωm to 10324Ωm with a depth range value of 28.7 to 42.2m. The integration of both techniques show the versatility of the electrical resistivity method in delineating the occurrence of tar sand deposits and the result obtained thereby reveals the presence of tar sands at an average depth of 35.5mReferences
Adegoke, O.S, Enu, E. I., Ajayi, T.R., Ako, B.D, Omatsola, M.E., and Afonja A.A., (1981):Tar Sand-a new energy raw material in Nigeria: Proceedings of the Symposium on New Energy Raw Material, Karlovy, 17-22.
Adegoke, O.S., Omatsola, M.E., and Coker, S.J.L, (1991): The Geology of Nigerian Tar Sands, in Meyer, R.F, Ed., 5th Unitar International Conference on Heavy Crude and Tar Sands: AOSTRA, Technical Reports, 369-3385
Agagu, O.K., (1985): A geological guide to Bituminous Sediments in South-Western Nigeria : Unpublished Report, Department of Geology, University of Ibadan.
Ako, B.D., Alabi, A.O., Adegoke, O.S. and Enu, E.I. (1983): Application of Resistivity Sounding in the Exploration in the Exploration for Nigeria Tar Sand: Energy Exploration and Exploitation: Graham and Trotman Limited, 2 (2), 155-164.
Alpin, L. (1950): The theory of Dipole Sanding Moscow, Gostoptekhizdat , 89.
Billman, H.G. (1976): Offshore Stratigraphy and Paleontology of Dahomey Embayment, West Africa Proc. 7th Africa Micropal. Coll. Ile-Ife.
Africa Proc. 7th Africa Micropal. Coll. Ile-Ife. Enu, E.I. (1985): Textural characteristics of the Nigeria Tar Sands. Sedimentary geology. 44, 65-81.
Enu, E.I., (1990): Texture and occurrence of Tar sands in Nigeria, in Ako, B.D., and Enu, E.I., Ed., Occurrence, Utilization and Economics of Nigeria Tar Sands: Nigeria Mining and Geosciences Society, 11-16.
Jones, H.A. and Hockey, R.D., (1964): Geology of parts of south-western Nigeria. Bulletin Geological Survey of Nigeria, 31, No 1, 56-77.
Loke, M. H. (2000): Electrical Imaging surveys for Environmental studies. A practical Guide to 2D and 3-D surveys. Heritage Geophysics.
Ministry of Mines and Steel Development, MMSD, (2010):Tarsands and Bitumen: Exploration Opportunities in Nigeria. (Web Document): Available at www.mmsd.gov.ng
Reyment, R.A. (1965): Aspect of the Geology of Nigeria. The stratigraphy of the cretaceousand cenozoic deposit. Ibadan University Press, 1133.
Russ, W., (1924):The Phosphate deposit of Abeokuta Province: Bulletin. Geologic Survey of Nigeria Bulletin 7, 43.
Singh, S., (2006): Cost Analysis of Advanced technologies for production of heavy oil and bitumen inWest Canada. Available at www.worldenergy.org/wecgies/publications/d efault/tech_papers (17th Congress, 2006). Accessed March 1st, 2006.
Zohdy A. A. R., Eaton G. P. and Mabey D. R. (1980): “Application of surface Geophysics to Ground water investigations” Techniques of Water Resources Investigations of the United States Geological survey. United states Government Printing office, Washington.
