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Hydrogeochemical Characterization of a Shallow Groundwater System in the Weathered Basement Aquifer of Ilesha Area, Southwestern Nigeria : Volume 364, Issue 364 (16/09/2014)

By Tijani, M. N.

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Book Id: WPLBN0003972362
Format Type: PDF Article :
File Size: Pages 6
Reproduction Date: 2015

Title: Hydrogeochemical Characterization of a Shallow Groundwater System in the Weathered Basement Aquifer of Ilesha Area, Southwestern Nigeria : Volume 364, Issue 364 (16/09/2014)  
Author: Tijani, M. N.
Volume: Vol. 364, Issue 364
Language: English
Subject: Science, Proceedings, International
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2014
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

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Oke, S. A., Olowookere, A. T., & Tijani, M. N. (2014). Hydrogeochemical Characterization of a Shallow Groundwater System in the Weathered Basement Aquifer of Ilesha Area, Southwestern Nigeria : Volume 364, Issue 364 (16/09/2014). Retrieved from http://www.ebooklibrary.org/


Description
Description: Department of Geology, University of Ibadan, Ibadan, Nigeria. Hydrogeochemical characterization of a weathered basement aquifer in Ilesha area, southwest Nigeria, was carried out with respect to geogenic and anthropogenic influences on the shallow groundwater system. Physico-chemical parameters revealed a pH of 6.4–8.4 and EC of 22–825 μs/cm in the urban areas compared to a pH of 7.3–10.5 and relatively higher EC of 126–1027 μs/cm in the peri-urban area. The concentrations of major cations (Ca, Na, K, Mg) in the urban areas revealed relatively lower average concentrations of 28.4, 16.7, 8.4 and 5.0 mg/L, respectively, compared to 82.5, 33.4, 19.3 and 12.4 mg/L, respectively, for the peri-urban areas. The low concentrations of major cations in the urban areas can be attributed to low mineral dissolution of quartzite and muscovite quartz-schist bedrocks compared to the weathered granitic, amphibolite and biotite schist in the peri-urban areas. Hydrochemical characterization revealed two main water types; namely Ca-Mg-(Na)-HCO3 mostly in the urban areas suggesting CO2-charged infiltrating recharge rainwater, and Ca-Na-(K)-SO4-Cl type in the peri-urban areas as products of water–rock interactions.

Summary
Hydrogeochemical characterization of a shallow groundwater system in the weathered basement aquifer of Ilesha area, southwestern Nigeria

 

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