Geophysical evaluation of magnetic data of Okenugbo area, Age - Iwoye, Southwestern Nigeria

• Autorzy: Oladunjoye H. T. , Olasunkanmi N. , Olaleye A. O.
• Języki publikacji: EN

Abstrakty

EN

The results of a magnetic study of the Okenugbo Area of Ago-Iwoye, Southwestern Nigeria are presented for the evaluation of the geostructural settings in the area to determine the competency of the basement for building constructions. The study area lies within Longitude N - N and Latitude E and E in the basement complex of Nigeria. Three magnetic profiles were established for the evaluation and the magnetic anomaly map, the regional geology and its analytic signal amplitude helped in identifying the nature and depth of the magnetic sources in the study region. The magnetic residual values range from -2400 nT to +1800 nT. The area shows magnetic closures of various sizes at the Western part of the study area trending West with prominence at the center and distributed East-West which has been interpreted as fractured or faulted zones. The depth estimate revealed the apparent depth to the causative body from the surface and the basement depth range from 4.3 to 21.3 m which agrees with other literatures. The study has revealed that the area is generally competent for high rise structures and industrial site while the faulted/fractured zones are prospective better locations for hydrogeological purposes.

Słowa kluczowe

EN

geophysics; anomaly; fracture; intrusion; road; building; dam; bridge; Nigeria; hydrogeology

• Wydawca: -
• Czasopismo: International Letters of Natural Sciences
• Rocznik: 2013
• Tom: 03
• Opis fizyczny: p.28-38,fig.,ref.

Twórcy

autor

Oladunjoye H. T.

• Department of Physics, Olabisi Onabanjo University, Ago-Iwoye, Nigeria

autor

Olasunkanmi N.

• Department of Chemical, Geological and Physical Sciences, Kwara State University, Malete, Nigeria

autor

Olaleye A. O.

• Department of Earth Sciences, Faculty of Pure and Applied Science, Ladoke Akintola University of Technology, Ogbomoso, Nigeria

Bibliografia

• [1] Akanmu J. O., Eluwa O., Ekpo I. (2007). Chronicles of river basin management in Nigeria. A journal presented at the international congress on river basin management.
• [2] Ariyo S. O., Adeyemi G. O., Oyebamiji A. O., Journal of Applied Sciences Research 5(9) (2009) 1239-1246.
• [3] Badmus B. S., Olatinsu O. B., Journal of Physical Sciences 4(10) (2009) 592-606.
• [4] Kehinde-Philips O. O. (1992). Geological Map of Ogun state. In: Onakomaiya, S. O., Oyesiku, O.O. and Segede, F.J (eds.). Ogun state Map. Nigeria: Rex Charles Publication. Pp. 6-20.
• [5] Milligan P. R., Gunn P. J., J. Aust. Geology and Geophysics 17 (1997) 63-75.
• [6] Nabighian M. N., Geophysics 37 (1972) 507-517.
• [7] Nabighian M.N., Geophysics 39 (1974) 85-92.
• [8] Nicolas O. M. (2008) ‘The magnetic method’ Presented at Short Course III on Exploration for Geothermal Resources, organized by UNU-GTP and KenGen, at Lake Naivasha, Kenya.
• [9] Rahaman M. A. (1988). Recent advances in the study of the Basement Complex of Nigeria. In: Oluyide, P.O., Mbonu, W.C., Ogezi, A.E., Egbuniwe, I.G., Ajibade, A.C. and Umeji A.C. (eds.). Precambrian Geology of Nigeria, G.S.N., pp. 11-41.
• [10] Rahman M. A., Review of the Basement Geology of Southwest, Nigeria. Geol. Nigeria (1989) 943-959.
• [11] Roest W. R., J. Verhoef, M. Pilkington, Geophysics 57 (1992) 116-125.
• [12] Shanu T. O. (1991). Geology and Geochemistry of Laterites around Ago-Iwoye. Imodi –Imosan area of Southwestern Nigeria. Unpublished B.Sc. Project, Ogun State University, Ago - Iwoye. 40p.