Journal of Geosciences and Geomatics
ISSN (Print): 2373-6690 ISSN (Online): 2373-6704 Website: Editor-in-chief: Maria TSAKIRI
Open Access
Journal Browser
Journal of Geosciences and Geomatics. 2014, 2(2), 50-56
DOI: 10.12691/jgg-2-2-2
Open AccessArticle

Geological and Geotechnical Investigation of Gully Erosion along River Bosso, Minna, North Central Nigeria

I. A. Okunlola1, I. A. Abdulfatai1, , Kolawole L. L.2 and Amadi A. N.1

1Geology Department, Federal University of Technology, Minna, Nigeria

2Earth Sciences Department, Ladoke Akintola University of Technology, Ogbomoso, Nigeria

Pub. Date: April 15, 2014

Cite this paper:
I. A. Okunlola, I. A. Abdulfatai, Kolawole L. L. and Amadi A. N.. Geological and Geotechnical Investigation of Gully Erosion along River Bosso, Minna, North Central Nigeria. Journal of Geosciences and Geomatics. 2014; 2(2):50-56. doi: 10.12691/jgg-2-2-2


Geological and geotechnical investigation along River Bosso, Minna to determine the soil characteristics contributing to gully erosion in the area was done. Field mapping showed that granite, granite-gneiss and schist of Basement complex suite underlie the area and granite is more prominent than granite-gneiss and schist. The index test results for the natural moisture content ranges from 11.19 – 24.08%; the plasticity index ranges from 0 – 5.21%; the sieve analysis result shows that coefficient of uniformity, Cu ranges from 3.37 and 29.00 while coefficient of curvature, Cc ranges from 0.17 – 0.89; the undisturbed bulk density is between 0.87 – 1.11kg/m3 and the compacted bulk density is between 1.25 – 1.49kg/m3; the specific gravity ranges from 2.16 - 2.67. For the performance test; the compaction result shows that the optimum moisture content (OMC) ranges from 8.90 – 14.85% while the maximum dry density (MDD) ranges from 1.880 - 2.09mg/m3; the triaxial shear test result shows that the angle of internal friction is between 60 - 90 and the cohesion ranges from 28 – 42kg/m2; the permeability is between 1.42 × 10-3 and 1.93 × 10-3 cm/sec. The relatively high sand content and low plasticity of the soil is susceptible to erosion which is attributed to the dominant granitic rock of the study area with high affinity for gully erosion. The anthropogenic factors found to have contributed to gully growth are farm practice, mining activities and residential buildings on the flood plain.

geology geotechnical properties subsoil gully erosion anthropogenic factors

Creative CommonsThis work is licensed under a Creative Commons Attribution 4.0 International License. To view a copy of this license, visit


[1]  Ajibade, A. C., Geotectonic evolution of the Zungeru Region, Nigeria. Unpublished Ph.D. Thesis, University of Wales, Aberystwyth, 1980.
[2]  Alao, D. A., & Opaleye, T. S., Geotechnical analysis of slope failure of a Kaolin quarry at Kurra, Jos North-central Nigeria. Nigerian Mining and Geosciences Society Journal, 2011.
[3]  Ara, A., Naresh, S., Raymond, C. & George, M., Geotechnical and Foundation Engineering, Module 1 – Subsurface Investigation. Federal Highway Administration, Virginia, 1997, 7-8.
[4]  Brian, V., Laboratory Work in Civil Engineering Soil Mechanics, Crosby Lockwood Staples, Norwich, Great Britain, 1978, 44.
[5]  Carter M. & Bentley S. P., Correlations of soil properties. Pentech, 1991, 130.
[6]  Das B. M., Principles of Geotechnical Engineering, Fifth edition, 2006, 593.
[7]  Egboka, B. C. E. & Nwankwor, E. I., The hydrogeological and geotechnical parameters as causative agents in the generation of erosion in the rain forest belt of Nigerian. Journal of Africa Earth Science, 3 (4), 1986, 417-425.
[8]  Grossman, R. B. & Reinsch, T. G.,. Method of Soil Analysis, Soil Science Society of America, Incoperation. Madison, Winconsin, USA, 2002.
[9]  Hudec P., Simpson F., Akpokodje E., & Umenweke M., Proceedings of the Eighth Federal Interagency Sedimentation Conference (8thFISC), April 2-6, 2006, Reno, NV, USA, 2006, 671-679.
[10]  Ishaku, J. M., Adekeye, J. I. D. & Negro, S. S., The Hydrogeological and Geotechnical characteristics of Rock Materials that Aid Gully Erosion in Lassa Area of Borno State, North Eastern Nigeria, Water Resources – Journal of Nigeria Association of Hydrogeology (NAH), Volume 13, November, 2002, 53.
[11]  Nwajide, C. S. & Hogue, H., Gullying processes in South Eastern Nigeria. The Nigerian Field 44(2), 1979, 64-74.
[12]  Obiefuna, G. I., Nur, A., Baba, A. U., & Bassey, N. E., Geological and Geotechnical Assessment of Selected Gully Sites, Yola Area, North-East Nigeria. Journal of Environment Hydrology 7, 1999, 11-12.
[13]  Onwuemesi, A. G. & Egboka, B. C. E., Implication of Hydrogeophysical Investigations of the Agulu-Nanka Gullies Area of Anambra State of Nigeria. Journal of African Earth Science, 1991, 13, 519.
[14]  O’Flaherty., C. A., Highway engineering, Vol. 2. Edward Arnold Publishers, London. UK, 1988.