Petrography and Geochemical Features of the Coastal Plain Sands Facies (Benin Formation) Around Nekede and Azara Egbelu Areas, Niger Delta Basin Southeast Nigeria
Science, Technology & Public Policy
Volume 1, Issue 5, October 2017, Pages: 126-130
Received: Jun. 29, 2017; Accepted: Jul. 27, 2017; Published: Sep. 21, 2017
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Authors
Julius Bajabu Kwache, Department of Regional Geology, Nigerian Geological Survey Agency, Adamawa State Office, Yola, Nigeria
Izu Mike Akaegbobi, Department of Geology, University of Ibadan, Ibadan, Nigeria
Razak Gboyega Olademeji, Department of Regional Geology, Nigerian Geological Survey Agency, Federal Capital Territory, Abuja, Nigeria
Justin Anumnu, Department of Regional Geology, Nigerian Geological Survey Agency, Enugu, Nigeria
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Abstract
The Coastal Plain Sands Facies (Benin Formation) of the Niger Delta Basin consists of 99.8% thick accumulation of massive, loose, friable sandstone and 0.2% mud rock. It also consists of pebble imbrications and conglomeratic horizons. Petrographic studies revealed quartz as the dominant mineral (97%) which places the sandstone as quartz arenite. Other minerals include feldspar, limonite, zircon, opaque and minor clay matrix consisting 3%. Geochemical results shows high concentration of Silica (SiO2) and Aluminum (Al2O3) in the sandstone which makes it mineralogical matured. Heavy minerals include Hematite (Fe2O3) and Zircon (Zr) while rare earth elements include La, Ce, Nd, Gd and Tb. Trace elements are Cu, Pb, Zn, Ag, Sr, V and Nb which has pronounced enrichment in clay than the sandstones. The color variation of white, yellow and pink are indicative of fully aerated environment and has no effect on the geochemistry of the sandstones.
Keywords
Nekede, Azara Egbelu, Benin, Sandstone, Mud Rock, Arenite, Aerated
To cite this article
Julius Bajabu Kwache, Izu Mike Akaegbobi, Razak Gboyega Olademeji, Justin Anumnu, Petrography and Geochemical Features of the Coastal Plain Sands Facies (Benin Formation) Around Nekede and Azara Egbelu Areas, Niger Delta Basin Southeast Nigeria, Science, Technology & Public Policy. Vol. 1, No. 5, 2017, pp. 126-130. doi: 10.11648/j.stpp.20170105.13
Copyright
Copyright © 2017 Authors retain the copyright of this article.
This article is an open access article distributed under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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