ABSTRACT:
The deformed, low-grade, metasedimentary-volcanic schist belts of NW Nigeria, and the voluminous granitoid plutons which invaded them, are expressions of late Proterozoic-early Phanerozoic activity in the terrain separating the W African and Congo cratons. Recent interpretations of Nigerian geotectonic evolution have invoked two generations of schist belt, one a product of Kibaran (c. 1100 Ma) ensialic processes, the other due to Pan-African (700-450 Ma) marginal basin development. The detailed histories of the Anka Belt (Pan-African), Maru belt (Kibaran) and Birnin Gwari Belt (unknown age), and the plutons emplaced in them, are documented here on the basis of new field, chemical and isotopic data. -from Authors
Journal of the Geological Society 04/1985; 142(2):319-337. DOI:10.1144/gsjgs.142.2.0319
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