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Article Number - 81EE46865826


Vol.9(2), pp. 9-17 , August 2017
https://doi.org/10.5897/JGMR2017.0275
ISSN: 2006-9766


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Full Length Research Paper

Investigation of subsurface for construction purposes in Makurdi, Benue State, Nigeria, using electrical resistivity method



Idoko Agada
  • Idoko Agada
  • Department of Physics Education, School of Science Education, Federal College of Education (Technical), Omoku, Rivers State, Nigeria.
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Johnson C. Ibuot
  • Johnson C. Ibuot
  • Department of Physics and Astronomy, University of Nigeria, Nsukka, Enugu State, Nigeria.
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Moses Ekpa
  • Moses Ekpa
  • Department of Physics Education, School of Science Education, Federal College of Education (Technical), Omoku, Rivers State, Nigeria.
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Daniel N. Obiora
  • Daniel N. Obiora
  • Department of Physics and Astronomy, University of Nigeria, Nsukka, Enugu State, Nigeria.
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 Received: 06 June 2017  Accepted: 24 July 2017  Published: 31 August 2017

Copyright © 2017 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


Fifteen vertical electrical sounding (VES) stations were sounded using Schlumberger electrode configuration. The result revealed a total of 3 to 4 geoelectric layers. The first layer with resistivity values range from 2.8 to 149.2 Ωm and has thickness and depth of 0.1 to 6.5 m. The second layer has resistivity which ranges from 245.9 to 7761.2 Ωm, thickness of 1.1 to 10.7 m and depth of 1.2 to 17.2 m. This layer was observed to be more resistive than the overlain layer. The third layer was delineated with the resistivity range of 49.4 to 2161.4 Ωm, thickness of 4.5 m-∞ and depth of 5.7 m- ∞. The fourth layer has resistivity values which range from 203.3 Ωm-∞ within the maximum current electrode separation. The observed curve types are K, Q, KH and QK with K being the dominant curve type. The contour maps generated display the variation of the electrical properties of the subsurface layers. The lithology layer with clay is not suitable for building foundation due to their expansive nature while the laterite which is mechanically stable is suitable for building foundation. The lateritic layer to a depth of 1.2 to 3.0 m is considered suitable for massive engineering structures with strong base for solid foundation.

 

Key words: Vertical electrical sounding, construction purpose, subsurface lithology, building foundation, Makurdi.

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APA Agada, I., Ibuot, J. C., Ekpa, M., & Obiora, D. N. (2017). Investigation of subsurface for construction purposes in Makurdi, Benue State, Nigeria, using electrical resistivity method. Journal of Geology and Mining Research, 9(2), 9-17.
Chicago Idoko Agada, Johnson C. Ibuot, Moses Ekpa and Daniel N. Obiora. "Investigation of subsurface for construction purposes in Makurdi, Benue State, Nigeria, using electrical resistivity method." Journal of Geology and Mining Research 9, no. 2 (2017): 9-17.
MLA Idoko Agada, et al. "Investigation of subsurface for construction purposes in Makurdi, Benue State, Nigeria, using electrical resistivity method." Journal of Geology and Mining Research 9.2 (2017): 9-17.
   
DOI https://doi.org/10.5897/JGMR2017.0275
URL http://academicjournals.org/journal/JGMR/article-abstract/81EE46865826

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