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Journal of Scientific Research and  Studies

Journal of Scientific Research and Studies Vol. 2(2), pp. 43-55, March, 2015

ISSN 2375-8791

Copyright 2015

Author(s) retain the copyright of this article

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Full Length Research Paper

Geochemical drainage survey of Ikere and Environs, South western Nigeria using stream sediments

 

Ayodele Olusiji Samuel

Department of Geology, Ekiti State University, Ado Ekiti, Nigeria. E-mail: samuelayodeleolusiji@yahoo.com, riksam2002@gmail.com
 

Accepted 02 January, 2015

 

 Abstract

 

Stream sediment geochemical survey was carried out around Ikere and its environs with the aim of assessing its mineral potentials. The method of study includes field examination of the underlying lithologic units in the study area, coupled with the collection of ten (10) stream sediments samples using grid controlled sampling method at a sampling density of one sample per 4 sqkm2. The samples were later digested using the total acid digestion method and subsequently analyzed for its major and trace elements using Multi-Collector High Resolution Inductively Coupled Plasma Mass Spectrophotometry (MC-ICMPS) technique. The result of field examination revealed the prominence of three main lithologic units in the study area namely: porphyriticgranites, charnockites and medium grained-migmatites, with well-defined boundaries. The results of geochemical analysis indicated high concentration of silica and moderate concentration of alumina. SiO2 has (48.87-92.25%) and Al2O3 (2.45-16.42%) respectively. The result of trace elements analyzed also revealed high concentration of Ba (186-1308 ppm), followed by Mn (1402 ppm), Ce (175 ppm) and Sr (313 ppm). The Petrogenetic character of the sediments as established on the Na2O/Al2O3 vs K2O/ Al2O3 discriminant diagrams showed that the stream sediments are largely of igneous origin.

Key words: Ikere, stream sediments, rock units, anomalies, geochemical plots, statistics.

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