Petrochemistry and geotectonic setting of granitic rocks in Aderan Area, SW Nigeria

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dc.contributor.authorOkonkwo, CT
dc.contributor.authorFolorunso, IO
dc.date.accessioned2023-01-05T08:49:41Z
dc.date.available2023-01-05T08:49:41Z
dc.date.issued2013
dc.description.abstractAderan area, southwestern Nigeria is underlain by metaigneous and metasedimentary rocks which have been intruded by granitic rocks of probable Pan-African (ca. 600 Ma) age. Four types of granitic rocks have been identified in the area, including granitic gneisses, medium-grained granite, porphyritic granite and granodiorite. Geochemical analysis show that the rocks are largely calc-alkaline. The granodiorite is less siliceous and more calcic, and also contains less Ba, Nb and Rb, and more Sr, Ce and La than the granites. Tectonically, the rocks classify as volcanic arc and syn-collisional and possibly late-to- post-collisional granitic rocks with respect to the Pan-African orogeny. Chemical characteristics indicate that these rocks were derived from partial melting of mafic to semi-pelitic (metasedimentary) crustal rocks under conditions of intermediate oxygen fugacity and activities of H2Oen_US
dc.description.sponsorshipSelfen_US
dc.identifier.urihttps://ccsenet.org/journal/index.php/jgg/article/view/20849
dc.identifier.urihttps://uilspace.unilorin.edu.ng/handle/20.500.12484/8132
dc.language.isoenen_US
dc.publisherCanadian Center of Science and Educationen_US
dc.relation.ispartofseries5;1
dc.subjectgranitic rocks, petrochemistry, tectonic setting, Pan-African orogeny, Aderan areaen_US
dc.titlePetrochemistry and geotectonic setting of granitic rocks in Aderan Area, SW Nigeriaen_US
dc.typeArticleen_US

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