Geochemical Classification and Geotectonic Setting of Granitic Gneisses from Southeastern Margin of Western Nigeria Basement

Authors

  • Mohammed Olatoye Adepoju Department of Applied Geology, The Federal University of Technology, Akure, Nigeria
  • Yinusa Ayodele Asiwaju-Bello Department of Applied Geology, The Federal University of Technology, Akure, Nigeria

DOI:

https://doi.org/10.30564/jgr.v3i2.2831

Abstract

Chemical whole-rock major oxides and some trace element analyses were done on granitic-gneiss rocks from Dagbala-Atte District, located on the southeastern margin of western Nigeria Basement Complex. This was meant to classify the rocks and to understand the tectonic setting in order to evaluate their crustal evolution. The chemical analyses were done using inductively-coupled plasma mass spectrometer. From the results obtained, these rocks classified into calc-alkaline to shoshonite series with metaluminous to peraluminous varieties. They are I-type granitoids of feroan composition. The granitic gneisses formed from metamorphism of granite and granodiorite. Tectonically, most of the rock samples plotted in the field of island arc, continental arc and continental-collisional granitoids,which indicated that the protolith granite and granodiorite are orogenic and are arc related inferring arc tectonic setting.

Keywords:

Migmatite-gneiss-quartzite complex; Granitoid; Protolith; Calc-alkaline; Dagbala-Atte district

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How to Cite

Adepoju, M. O., & Asiwaju-Bello, Y. A. (2021). Geochemical Classification and Geotectonic Setting of Granitic Gneisses from Southeastern Margin of Western Nigeria Basement. Journal of Geological Research, 3(2), 1–6. https://doi.org/10.30564/jgr.v3i2.2831

Issue

Vol. 3 , Iss. 2 (April 2021)

Article Type

Articles

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Copyright © 2021 Mohammed Olatoye Adepoju, Yinusa Ayodele Asiwaju-Bello

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