Geoelectrical Characterization of Rock Formations Underlying Idonyi River, Amaeke-Abam, Southeastern Nigeria

Nnokwe Ndidiamaka Nchedo; Ibe Kalu Kalu; Ibeneme Sabinus Ikechukwu; Selemo Alexander Olusegun; Nwagbara Johnbosco Okechukwu

doi:doi:10.11648/j.ajpa.20140201.15

Geoelectrical Characterization of Rock Formations Underlying Idonyi River, Amaeke-Abam, Southeastern Nigeria

Nnokwe Ndidiamaka Nchedo, Ibe Kalu Kalu, Ibeneme Sabinus Ikechukwu, Selemo Alexander Olusegun, Nwagbara Johnbosco Okechukwu

Published in American Journal of Physics and Applications (Volume 2, Issue 1)

Received: 4 December 2013 Published: 10 January 2014

Views: Downloads:

Download PDF

Share This Article

Twitter
Linked In
Facebook

Abstract

The geoelectrical characterization of soils underlying the Idonyi River Dam site Amaeke-Abam, Southeastern Nigeria has been carried out with a view to determining the presence or otherwise of deleterious matter along the dam axis down to a depth of 37m below the surface; evaluate the geo-structural setting of the concealed bedrock, the fracture pattern and possible dam seepage along the dam axis and its banks as well as giving suggestions on any other measures/studies that may be needed for a proper engineering design. The study area is around the river located between latitudes 5o 34’N – 5o37‘N and longitudes 7o39’E – 7o 42’E. Heights above sea level in the area range from 68 to 91 meters. The survey was carried out with Abem Terrameter SAS 1000C. The sounding stations were laid out in three (3) profiles; eight (8) VES on each profile. A total of twenty-four (24) VES data were conducted. The Schlumberger electrode configuration was adopted to a total spread length of 110 meters (AB/2 of 55 meters). Results showed that resistivity values of between 182 and 2637Ωm at the eastern part of the River and another range of 6.2 to 848Ωm in the western end suggest overriding sandy substratum to east and overriding shaly characteristics to the west. These results show clearly that the area around Idonyi is porous with relatively higher sandy fractions.The derived parameters on both sides of the river agreed with the standard parameters required for a dam construction. The failure of a previous dam near the river is thus attributable to much seepage due to overriding sandy substratum. To avoid the seepage, the base of the dam should be blanketed with an impervious material such as shale. The area, being the most fertile area (phosphatic Ameki units) with CRIN, NRRI, FRIN, RCRIN having research institutes near the river, a dam is necessary here and this study has shown that it is possible to have a dam with solid foundation. However, we suggest a baseline data survey of water quality before any construction so as to monitor any contamination trend due to impoundment.

Published in	American Journal of Physics and Applications (Volume 2, Issue 1)
DOI	10.11648/j.ajpa.20140201.15
Page(s)	35-45
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2014. Published by Science Publishing Group

Keywords

Amaeke-Abam, Geoelectric Section, Iso-resistivity, Lithology, Schlumberger, Seepage

References

[1]	Jansen,R.B (1988). Advance dam engineering for design, construction and rehabilitation. Technology and engineering, U.S.A. p 811.
[2]	Chukweze, H.O. (1990). Advance Engineering Soil Mechanics; Humoch Nigeria Association; Pp.1-50.
[3]	Robert, F.L. and Hatheway, A.W. (1988). geology and engineering; Mc-graw Hill Book Coy; pp 1-100, 587.
[4]	John, A.F. and Dusseault M.B., (1989). rock engineering; McGraw-Hill, New York.
[5]	Ajayi O. Olorunfemi M.O, Ojo J.S, Adegoke – Anthony C.W, Chikwendu K.K, Oladapo M.I, Idornigie AL, Akinluyi F. (2005). Intergrated geophysical and geotechnical investigation of a dam site on Rver Majyo Ini, Adamawa State, Northern Nigeria. Afri. Geosc. Rev. 12(3), 179 – 188.
[6]	Bayewu O. O., Oloruntola M. O., Mosuro G. O. and Abass O. K. (2012). Preliminary Investigation of a Proposed Dam Site along River Ome, Ago Iwoye South Western Nige- ria," Journal of Science and Technology, 1(6), 308-315.
[7]	Olasunkanmi N. K., Olatunji S., Akoshile C. O. and Nwankwo L. I. (2012) Geoelectrical Assessment of University of Ilorin Dam Axis," Archives of Physics Research, 3( 3), 221-231.
[8]	Kilty, K. T., Norris, R. A., Mc Lamore, W. R., Hennon, K. P. and Euge, K. (1986). Seismic Refraction at Horse Mesa dam: An application of the generalized reciprocal method. Geophysics, 51(2), 266 – 275.
[9]	Annor, E. A., Olasehinde, P. L. and Pal, P. C. (1989), A geological evaluation of a Prospective site for a Weir in the River Oyin, Ilorin, Nigeria. Zangew: Geowiss, heft 8, S. 83 – 90.
[10]	Ojo, J. S. and Olorunfemi, M. O. (1995). Geoelectric Mapping of a Near Vertical Contact: A case study Around Erusu, Ikare Area, South-Western Nigeria. Journal of Mining and Geology. 13(2), 151 – 153.
[11]	Olasehinde, P. I. and Adelana, S. M. A. (1999). A Geophysical Investigation of a Proposed Dam Site in Southwestern Nigeria. Water Resources.10, 50 – 54.
[12]	Ibeneme S. I., Ibe K.K., Selemo A.O., Udensi S.C., Nwagbara J.O., Eze I.O., Ubechu B.O., Onwuka C.O. (2013). Geoelectrical Assessment of a Proposed Dam Site around Ehuhe area of Oji River, Southeastern Nigeria. Journal of Natural Sciences Research 3(13), 163-170.
[13]	Lowrie, W. (1997). Fundamental of Geophysics. Cambridge University press.UK, 165-228.
[14]	Telford, W. M., Geldert L.P., Sheriff R. B. and Keys D. A. (1982). Applied Geophysics. Cambridge University press, second edition, 635-642.
[15]	Azm, S.A; Sofwan K.S. and Hussein A.I.; (1994). Engineering Geology Vol. 38; Elsevier Amsterdam.
[16]	Dobrin, M.B. (1960). Introduction To Geophysical Prospecting; Mc-Graw Hill Book Co, 569, 571, 591
[17]	Zohdy, A.A.R. (1975). Automatic Interpretation of Schlumberger Sounding Curves using Dar Zarouk Function. US. Geol. Surv. Bull. 39, 1313-E.
[18]	Ibe K.K. (1999). Geoelectrical sounding of the Northern section of Bauchi road campus, University of Jos Nigeria. Journal of environmental sciences. 3(2), 140-146.

Cite This Article

Plain Text BibTeX RIS

APA Style

Nnokwe Ndidiamaka Nchedo, Ibe Kalu Kalu, Ibeneme Sabinus Ikechukwu, Selemo Alexander Olusegun, Nwagbara Johnbosco Okechukwu. (2014). Geoelectrical Characterization of Rock Formations Underlying Idonyi River, Amaeke-Abam, Southeastern Nigeria. American Journal of Physics and Applications, 2(1), 35-45. https://doi.org/10.11648/j.ajpa.20140201.15

Copy | Download

ACS Style

Nnokwe Ndidiamaka Nchedo; Ibe Kalu Kalu; Ibeneme Sabinus Ikechukwu; Selemo Alexander Olusegun; Nwagbara Johnbosco Okechukwu. Geoelectrical Characterization of Rock Formations Underlying Idonyi River, Amaeke-Abam, Southeastern Nigeria. Am. J. Phys. Appl. 2014, 2(1), 35-45. doi: 10.11648/j.ajpa.20140201.15

Copy | Download

AMA Style

Nnokwe Ndidiamaka Nchedo, Ibe Kalu Kalu, Ibeneme Sabinus Ikechukwu, Selemo Alexander Olusegun, Nwagbara Johnbosco Okechukwu. Geoelectrical Characterization of Rock Formations Underlying Idonyi River, Amaeke-Abam, Southeastern Nigeria. Am J Phys Appl. 2014;2(1):35-45. doi: 10.11648/j.ajpa.20140201.15

Copy | Download

@article{10.11648/j.ajpa.20140201.15,
  author = {Nnokwe Ndidiamaka Nchedo and Ibe Kalu Kalu and Ibeneme Sabinus Ikechukwu and Selemo Alexander Olusegun and Nwagbara Johnbosco Okechukwu},
  title = {Geoelectrical Characterization of Rock Formations Underlying Idonyi River, Amaeke-Abam, Southeastern Nigeria},
  journal = {American Journal of Physics and Applications},
  volume = {2},
  number = {1},
  pages = {35-45},
  doi = {10.11648/j.ajpa.20140201.15},
  url = {https://doi.org/10.11648/j.ajpa.20140201.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpa.20140201.15},
  abstract = {The geoelectrical characterization of soils underlying the Idonyi River Dam site Amaeke-Abam, Southeastern Nigeria has been carried out with a view to determining the presence or otherwise of deleterious matter along the dam axis down to a depth of 37m below the surface; evaluate the geo-structural setting of the concealed bedrock, the fracture pattern and possible dam seepage along the dam axis and its banks as well as giving suggestions on any other measures/studies that may be needed for a proper engineering design. The study area is around the river located between latitudes 5o 34’N – 5o37‘N and longitudes 7o39’E – 7o 42’E. Heights above sea level in the area range from 68 to 91 meters. The survey was carried out with Abem Terrameter SAS 1000C. The sounding stations were laid out in three (3) profiles; eight (8) VES on each profile. A total of twenty-four (24) VES data were conducted. The Schlumberger electrode configuration was adopted to a total spread length of 110 meters (AB/2 of 55 meters). Results showed that resistivity values of between 182 and 2637Ωm at the eastern part of the River and another range of 6.2 to 848Ωm in the western end suggest overriding sandy substratum to east and overriding shaly characteristics to the west. These results show clearly that the area around Idonyi is porous with relatively higher sandy fractions.The derived parameters on both sides of the river agreed with the standard parameters required for a dam construction. The failure of a previous dam near the river is thus attributable to much seepage due to overriding sandy substratum. To avoid the seepage, the base of the dam should be blanketed with an impervious material such as shale. The area, being the most fertile area (phosphatic Ameki units) with CRIN, NRRI, FRIN, RCRIN having research institutes near the river, a dam is necessary here and this study has shown that it is possible to have a dam with solid foundation. However, we suggest a baseline data survey of water quality before any construction so as to monitor any contamination trend due to impoundment.},
 year = {2014}
}

Copy | Download

TY  - JOUR
T1  - Geoelectrical Characterization of Rock Formations Underlying Idonyi River, Amaeke-Abam, Southeastern Nigeria
AU  - Nnokwe Ndidiamaka Nchedo
AU  - Ibe Kalu Kalu
AU  - Ibeneme Sabinus Ikechukwu
AU  - Selemo Alexander Olusegun
AU  - Nwagbara Johnbosco Okechukwu
Y1  - 2014/01/10
PY  - 2014
N1  - https://doi.org/10.11648/j.ajpa.20140201.15
DO  - 10.11648/j.ajpa.20140201.15
T2  - American Journal of Physics and Applications
JF  - American Journal of Physics and Applications
JO  - American Journal of Physics and Applications
SP  - 35
EP  - 45
PB  - Science Publishing Group
SN  - 2330-4308
UR  - https://doi.org/10.11648/j.ajpa.20140201.15
AB  - The geoelectrical characterization of soils underlying the Idonyi River Dam site Amaeke-Abam, Southeastern Nigeria has been carried out with a view to determining the presence or otherwise of deleterious matter along the dam axis down to a depth of 37m below the surface; evaluate the geo-structural setting of the concealed bedrock, the fracture pattern and possible dam seepage along the dam axis and its banks as well as giving suggestions on any other measures/studies that may be needed for a proper engineering design. The study area is around the river located between latitudes 5o 34’N – 5o37‘N and longitudes 7o39’E – 7o 42’E. Heights above sea level in the area range from 68 to 91 meters. The survey was carried out with Abem Terrameter SAS 1000C. The sounding stations were laid out in three (3) profiles; eight (8) VES on each profile. A total of twenty-four (24) VES data were conducted. The Schlumberger electrode configuration was adopted to a total spread length of 110 meters (AB/2 of 55 meters). Results showed that resistivity values of between 182 and 2637Ωm at the eastern part of the River and another range of 6.2 to 848Ωm in the western end suggest overriding sandy substratum to east and overriding shaly characteristics to the west. These results show clearly that the area around Idonyi is porous with relatively higher sandy fractions.The derived parameters on both sides of the river agreed with the standard parameters required for a dam construction. The failure of a previous dam near the river is thus attributable to much seepage due to overriding sandy substratum. To avoid the seepage, the base of the dam should be blanketed with an impervious material such as shale. The area, being the most fertile area (phosphatic Ameki units) with CRIN, NRRI, FRIN, RCRIN having research institutes near the river, a dam is necessary here and this study has shown that it is possible to have a dam with solid foundation. However, we suggest a baseline data survey of water quality before any construction so as to monitor any contamination trend due to impoundment.
VL  - 2
IS  - 1
ER  -

Copy | Download

Author Information

Nnokwe Ndidiamaka Nchedo

Geosciences Department, Federal University of Technology Owerri Nigeria
Ibe Kalu Kalu

Geosciences Department, Federal University of Technology Owerri Nigeria
Ibeneme Sabinus Ikechukwu

Geosciences Department, Federal University of Technology Owerri Nigeria
Selemo Alexander Olusegun

Geosciences Department, Federal University of Technology Owerri Nigeria
Nwagbara Johnbosco Okechukwu

Geosciences Department, Federal University of Technology Owerri Nigeria

Download PDF

Sections

Plain Text BibTeX RIS

APA Style

Nnokwe Ndidiamaka Nchedo, Ibe Kalu Kalu, Ibeneme Sabinus Ikechukwu, Selemo Alexander Olusegun, Nwagbara Johnbosco Okechukwu. (2014). Geoelectrical Characterization of Rock Formations Underlying Idonyi River, Amaeke-Abam, Southeastern Nigeria. American Journal of Physics and Applications, 2(1), 35-45. https://doi.org/10.11648/j.ajpa.20140201.15

Copy | Download

ACS Style

Nnokwe Ndidiamaka Nchedo; Ibe Kalu Kalu; Ibeneme Sabinus Ikechukwu; Selemo Alexander Olusegun; Nwagbara Johnbosco Okechukwu. Geoelectrical Characterization of Rock Formations Underlying Idonyi River, Amaeke-Abam, Southeastern Nigeria. Am. J. Phys. Appl. 2014, 2(1), 35-45. doi: 10.11648/j.ajpa.20140201.15

Copy | Download

AMA Style

Nnokwe Ndidiamaka Nchedo, Ibe Kalu Kalu, Ibeneme Sabinus Ikechukwu, Selemo Alexander Olusegun, Nwagbara Johnbosco Okechukwu. Geoelectrical Characterization of Rock Formations Underlying Idonyi River, Amaeke-Abam, Southeastern Nigeria. Am J Phys Appl. 2014;2(1):35-45. doi: 10.11648/j.ajpa.20140201.15

Copy | Download

@article{10.11648/j.ajpa.20140201.15,
  author = {Nnokwe Ndidiamaka Nchedo and Ibe Kalu Kalu and Ibeneme Sabinus Ikechukwu and Selemo Alexander Olusegun and Nwagbara Johnbosco Okechukwu},
  title = {Geoelectrical Characterization of Rock Formations Underlying Idonyi River, Amaeke-Abam, Southeastern Nigeria},
  journal = {American Journal of Physics and Applications},
  volume = {2},
  number = {1},
  pages = {35-45},
  doi = {10.11648/j.ajpa.20140201.15},
  url = {https://doi.org/10.11648/j.ajpa.20140201.15},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ajpa.20140201.15},
  abstract = {The geoelectrical characterization of soils underlying the Idonyi River Dam site Amaeke-Abam, Southeastern Nigeria has been carried out with a view to determining the presence or otherwise of deleterious matter along the dam axis down to a depth of 37m below the surface; evaluate the geo-structural setting of the concealed bedrock, the fracture pattern and possible dam seepage along the dam axis and its banks as well as giving suggestions on any other measures/studies that may be needed for a proper engineering design. The study area is around the river located between latitudes 5o 34’N – 5o37‘N and longitudes 7o39’E – 7o 42’E. Heights above sea level in the area range from 68 to 91 meters. The survey was carried out with Abem Terrameter SAS 1000C. The sounding stations were laid out in three (3) profiles; eight (8) VES on each profile. A total of twenty-four (24) VES data were conducted. The Schlumberger electrode configuration was adopted to a total spread length of 110 meters (AB/2 of 55 meters). Results showed that resistivity values of between 182 and 2637Ωm at the eastern part of the River and another range of 6.2 to 848Ωm in the western end suggest overriding sandy substratum to east and overriding shaly characteristics to the west. These results show clearly that the area around Idonyi is porous with relatively higher sandy fractions.The derived parameters on both sides of the river agreed with the standard parameters required for a dam construction. The failure of a previous dam near the river is thus attributable to much seepage due to overriding sandy substratum. To avoid the seepage, the base of the dam should be blanketed with an impervious material such as shale. The area, being the most fertile area (phosphatic Ameki units) with CRIN, NRRI, FRIN, RCRIN having research institutes near the river, a dam is necessary here and this study has shown that it is possible to have a dam with solid foundation. However, we suggest a baseline data survey of water quality before any construction so as to monitor any contamination trend due to impoundment.},
 year = {2014}
}

Copy | Download

TY  - JOUR
T1  - Geoelectrical Characterization of Rock Formations Underlying Idonyi River, Amaeke-Abam, Southeastern Nigeria
AU  - Nnokwe Ndidiamaka Nchedo
AU  - Ibe Kalu Kalu
AU  - Ibeneme Sabinus Ikechukwu
AU  - Selemo Alexander Olusegun
AU  - Nwagbara Johnbosco Okechukwu
Y1  - 2014/01/10
PY  - 2014
N1  - https://doi.org/10.11648/j.ajpa.20140201.15
DO  - 10.11648/j.ajpa.20140201.15
T2  - American Journal of Physics and Applications
JF  - American Journal of Physics and Applications
JO  - American Journal of Physics and Applications
SP  - 35
EP  - 45
PB  - Science Publishing Group
SN  - 2330-4308
UR  - https://doi.org/10.11648/j.ajpa.20140201.15
AB  - The geoelectrical characterization of soils underlying the Idonyi River Dam site Amaeke-Abam, Southeastern Nigeria has been carried out with a view to determining the presence or otherwise of deleterious matter along the dam axis down to a depth of 37m below the surface; evaluate the geo-structural setting of the concealed bedrock, the fracture pattern and possible dam seepage along the dam axis and its banks as well as giving suggestions on any other measures/studies that may be needed for a proper engineering design. The study area is around the river located between latitudes 5o 34’N – 5o37‘N and longitudes 7o39’E – 7o 42’E. Heights above sea level in the area range from 68 to 91 meters. The survey was carried out with Abem Terrameter SAS 1000C. The sounding stations were laid out in three (3) profiles; eight (8) VES on each profile. A total of twenty-four (24) VES data were conducted. The Schlumberger electrode configuration was adopted to a total spread length of 110 meters (AB/2 of 55 meters). Results showed that resistivity values of between 182 and 2637Ωm at the eastern part of the River and another range of 6.2 to 848Ωm in the western end suggest overriding sandy substratum to east and overriding shaly characteristics to the west. These results show clearly that the area around Idonyi is porous with relatively higher sandy fractions.The derived parameters on both sides of the river agreed with the standard parameters required for a dam construction. The failure of a previous dam near the river is thus attributable to much seepage due to overriding sandy substratum. To avoid the seepage, the base of the dam should be blanketed with an impervious material such as shale. The area, being the most fertile area (phosphatic Ameki units) with CRIN, NRRI, FRIN, RCRIN having research institutes near the river, a dam is necessary here and this study has shown that it is possible to have a dam with solid foundation. However, we suggest a baseline data survey of water quality before any construction so as to monitor any contamination trend due to impoundment.
VL  - 2
IS  - 1
ER  -

Copy | Download