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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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| Wegrzynek, D.; Jambers, W.; Van Grieken, R.; Eisma, D.. |
| Individual particle analysis using electron probe X-ray microanalysis was performed on sediment cores from the Gulf of Lions (Western Mediterranean Sea), on atmospheric aerosols sampled in Corsica and originating from Northern Africa, and on Rhône suspended matter. Cluster analysis was done to yield major particle types and kriging spatial analysis was applied to obtain the distributions of the particle types in the sediment surface layers. For three sediment cores, the depth profiles of particle groups were examined. The predominant particle types composing the sediment material in the Gulf of Lions were found to be Si-rich particles (quartz and biogenic silicate), aluminosilicate minerals (illite, kaolinite, chlorite) and Ca-rich particles (aragonite,... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 1997 |
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=8299 |
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