Geochemistry of the Ilesha granite gneiss in the basement complex of southwestern Nigeria

Elueze, Anthony Azubuike

doi:10.1016/0301-9268(82)90057-2

Cited by 14 publications

(11 citation statements)

References 6 publications

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“…Of all the trace elements, Rb and Pb show abnormally high values compared to average granite and crust. This is consistent with the study of Elueze (1987).…”

Section: Resultssupporting

confidence: 93%

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Major and Trace Element Geochemistry of Granites in Koji, Kogi State, Nigeria

Ugbe¹,

Adiela²,

Ebegbare³

2016

RJEES

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Major and trace elements geochemistry of Koji granites were determined to deduce the petrogenesis of the rocks. Six granite rock samples were collected and analyzed for their major and trace elements using the Inductively Coupled Plasma Mass Spectrometer Methods. From the major element geochemistry, SiO 2 ranges from 69.34%-72.97% and hence suggests a felsic granite. The strong correlation between SiO 2 and CaO, MgO, Na 2 O and Fe 2 O 3 , suggest that the primary mineral assemblage may have undergone significant changes during fractionation. The high K 2 O content suggests the abundance of K-feldspar in the rock. From the trace element geochemistry, the High Field Strength Elements (HFSE) and the Large Ion Lithophile Elements (LILE) is consistent with values of the average granite and crust. The depletion of Sr suggests plagioclase fractionation. The plot of A/CNK against SiO 2 indicates a S-type granitoid and on the basis of alumina saturation, it suggests a peraluminous granite. Based on the A/CNK against SiO 2 plot and alumina saturation plot the geotectonic setting indicate volcanic arc syn-collisional granites.

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“…Of all the trace elements, Rb and Pb show abnormally high values compared to average granite and crust. This is consistent with the study of Elueze (1987).…”

Section: Resultssupporting

confidence: 93%

“…Rocks of various parts of the Basement Complex have been studied by various researchers to explain their petrology, geochemistry, structural trends, mode of origin and age relationships (Rahaman, 1988;Ike, 1988;Oluyide, 1988;Rahaman andOcan, 1988, Olarewaju, 1988;Elueze, 1987;Dada, 1999a;Obiora and Ukaegbu, 2010).…”

Section: Introductionmentioning

confidence: 99%

Major and Trace Element Geochemistry of Granites in Koji, Kogi State, Nigeria

Ugbe¹,

Adiela²,

Ebegbare³

2016

RJEES

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“…The gneisses of the Obudu area have a high SiO 2 content (53-66 wt.%), similar to gneisses in the Oban Massif located south of Obudu (Ekwere and Ekwueme, 1991). The CaO content of some gneisses is higher than values of 1.48-2.08 wt.% as reported for the Akwanga granite gneisses in northcentral Nigeria (Onyeagocha, 1986) but similar to gneisses in the Oban Massif and those in Ilesha, southwestern Nigeria (Elueze, 1982). Al 2 O 3 ranges from 14 to 18 wt.%, and the occurrence of sillimanite in the garnet-sillimanite gneiss is a reflection of the peraluminous nature of the protolith.…”

Section: Geochemistrymentioning

confidence: 48%

Single zircon ages of migmatitic gneisses and granulites in the Obudu Plateau: Timing of granulite-facies metamorphism in southeastern Nigeria

Ekwueme

Kröner

2006

Journal of African Earth Sciences

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“…The study area was chosen based on the anomalies observed on aeromagnetic contour map of Ilesha. The geology of Ilesha has been discussed in detail by Rahaman et al [1][2][3][4][5][6][7][8][9][10]. It consists of Precambrain rocks which forms the basement complex.…”

Section: Introductionmentioning

confidence: 99%