Silicate facies iron-formation of the Egbe-lsanlu Palaeoproterozoic schist belt, southwest Nigeria

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dc.contributor.authorANNOR, A.E
dc.contributor.authorOlobaniyi, S.B
dc.contributor.authorMUCKE, A
dc.date.accessioned2019-09-05T16:20:51Z
dc.date.available2019-09-05T16:20:51Z
dc.date.issued1997
dc.description.abstractField, petrological, mineralogical and geochemical data on the Egbe-lsanlu Palaeoproterozoic schist belt are presented, high-lighting the main features of a silicate facies iron-formation, which hitherto had been described as a metamorphosed, impure sandstone. The iron-formation is relatively thin (max. 15 m) and concordantly interbedded with schistose, semi-pelitic, amphibolitic and talcose host rocks, with which it shares a common polyphase tectonometamorphic history. The last of these is the Pan-African overprint, during which time the iron-formation was locally silicified. The main constituent minerals are garnet (almandine-spessartine solid solution), amphibole (Mn and Ca bearing grunerite-cummingtonite solid solution), quartz and ilmenite. Magnetite was not observed. Geochemical data show that the iron-formation and metasediments are of different origins. The silicate facies iron-formation of lsanlu belongs to the Algoma-type and was derived by the metamorphism of a volcano-exhalative-sedimentary protolith, probably during Eburnian times.en_US
dc.identifier.citationAnnor, A. E., Olobaniyi, S. B., & Mücke, A. (1997). Silicate facies iron-formation of the Egbe-Isanlu Palaeoproterozoic schist belt, southwest Nigeria. Journal of African Earth Sciences, 24(1-2), 39-50.en_US
dc.identifier.urihttps://ir.unilag.edu.ng/handle/123456789/5310
dc.language.isoenen_US
dc.publisherJournal of African Earth Sciencesen_US
dc.subjectiron-formationen_US
dc.subjectpetrologicalen_US
dc.subjectmineralogicalen_US
dc.subjectgeochemicalen_US
dc.subjectsilicatesen_US
dc.titleSilicate facies iron-formation of the Egbe-lsanlu Palaeoproterozoic schist belt, southwest Nigeriaen_US
dc.typeArticleen_US
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