Origin and evolution of Ngaye River alluvial sediments, Northern Cameroon: Geochemical constraints

•Quartz, feldspars, kaolinite and smectite (+illite) are predominant.•CIA values indicate the moderate weathering of granitoids.•Sediments are immature after a short sorting of weathered detritus.•Fine sands are enriched in several trace elements, with large Eu-anomalies. The origin of Ngaye River a...

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Bibliographic Details
Published in:Journal of African earth sciences (1994) 2014-12, Vol.100, p.164-178
Main Authors: Ndjigui, Paul-Désiré, Beauvais, Anicet, Fadil-Djenabou, Soureiyatou, Ambrosi, Jean-Paul
Format: Article
Language:English
Subjects:
Alluvial sediments
Earth Sciences
Granitoids
Northern Cameroon
Rare-earth elements (REE)
Sciences of the Universe
Trace elements
Weathering
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Summary:•Quartz, feldspars, kaolinite and smectite (+illite) are predominant.•CIA values indicate the moderate weathering of granitoids.•Sediments are immature after a short sorting of weathered detritus.•Fine sands are enriched in several trace elements, with large Eu-anomalies. The origin of Ngaye River alluvial sediments and the evaluation of the weathering degree of their source rocks are assessed using trace and rare-earth element geochemistry in three bulk sediments and their different size fractions (2000–200μm, 200–50μm, 50–2μm and
ISSN:1464-343X
1879-1956
DOI:10.1016/j.jafrearsci.2014.06.005