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International Journal of Innovation and Scientific Research
ISSN: 2351-8014
 
 
Saturday 21 July 2018

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RESERVE ESTIMATION OF DOLERITE DEPOSIT AT OBIAGU LEKWESI, ABIA STATE SOUTHEASTERN PART OF NIGERIA USING GEOPHYSICAL APPROACH


Volume 12, Issue 2, December 2014, Pages 436–443

 RESERVE ESTIMATION OF DOLERITE DEPOSIT AT OBIAGU LEKWESI, ABIA STATE SOUTHEASTERN PART OF NIGERIA USING GEOPHYSICAL APPROACH

Eyankware Moses Oghenenyoreme, P.N. Nnabo, R.M. Akpolo, and P.N. Obasi

Original language: English

Received 3 October 2014

Copyright © 2014 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract


The survey is aimed at evaluating the geological parameters and establishing the surface and downward trends of a suspected quarry rock material, through resistivity variation characteristics, prior to the location of a rock quarry as well as estimating the overburden thickness. Geological study revealed that the dolerite has density of 1,200kgm3. A total of six (6) vertical electrical soundings (VES) and four (4) horizontal resistivity profiling (HRP) were carried out using Abem Terrameter SAS 1000 with Schlumberger array of electrode spacing of 200m and Wenner electrode array configuration were carried out with 10m respectively, field data were processed using different forward and inverse modeling computer Res2Div software. The VES results revealed that dolerite occurred at VES 5, VES 8 and VES 9 positions with thickness ranging from 12meters to 25meters but dolerite did not appear at; VES 2, VES 3 and VES 7. The results of the horizontal resistivity profiling HRP line trending north-east and south-west reveals that the intrusive rock occurs in boulders form scatter beneath the overburden in a very limited quantity while north-east direction indicates abortive. Results of the analysis show that the overburden thickness is not uniformly distributed, it decreases toward the natural hills (places of appreciable elevation and decreases as one approaches the low land areas (valley). The estimated volume of dolerite is 34, 92000.00 million tons.

Author Keywords: Vertical Electrical Sounding, Overburden, Intrusive rock, Quarry and Dolerite.


How to Cite this Article


Eyankware Moses Oghenenyoreme, P.N. Nnabo, R.M. Akpolo, and P.N. Obasi, “RESERVE ESTIMATION OF DOLERITE DEPOSIT AT OBIAGU LEKWESI, ABIA STATE SOUTHEASTERN PART OF NIGERIA USING GEOPHYSICAL APPROACH,” International Journal of Innovation and Scientific Research, vol. 12, no. 2, pp. 436–443, December 2014.