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| Scholkovitz, E.R.; Van Grieken, R.; Eisma, D.. |
| A study of the major-element (Si, Al, Fe, K, Mg, Ca, Ti, Mn and P) composition of suspended matter in the surface waters of the Zaire River and Estuary revealed that this material was enriched in Al, Fe and P and depleted in Si, Ca, K and Mg relative to recent pelagic sediments and to suspended matter carried by the Amazon River. These enrichments and depletions are characteristic of soils in regions of intense chemical weathering as is the situation in western equatorial Africa. Suspended samples from waters near the bottom of the estuary have compositions which indicate that this material has undergone much less chemical weathering. These particles were of greater size and most likely contained a larger proportion of quartz, micas, feldspars and oxides... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Suspended inorganic matter Africa; Zaire R.. |
| Ano: 1978 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3619 |
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| Martin, J.-M.; Thomas, A.J.; Van Grieken, R.. |
| The results of a preliminary study of trace element concentrations in the Zaire River and estuary suspended sediments are presented. Zaire River concentrations show a close agreement with those observed in other rivers of the world (including Magdalena and Parana). Within the mixing zone, lanthanides, Th, Sc, Hf and Rb remain nearly constant, whereas Cr, Co, Ni, Cu, Zn and Pb concentrations show much more scattering and are either constant or increasing. This last distributions differ significantly from the results of studies conducted in partially mixed estuaries. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Suspended sediments Trace elements Africa; Zaire R.. |
| Ano: 1978 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=3620 |
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