Mineralogy of dust deposited during the Harmattan season in Ghana

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dc.contributor.authorHe, C.
dc.contributor.authorBreuning-Madsen, H.
dc.contributor.authorAwadzi, T.W.
dc.date.accessioned2019-04-03T09:49:39Z
dc.date.available2019-04-03T09:49:39Z
dc.date.issued2007-01
dc.description.abstractIn Ghana, a dust-laden Harmattan wind blows from the Sahara in the period November to March. Some of the dust is trapped in the vegetation, in lakes and other inland waters, and a little on the bare land, whereas the rest of the dust is blown further away to the Ivory Coast or out into the Atlantic Ocean. In this project, we studied samples of dust and topsoils in various agroecological zones, from the north to the south of Ghana, focussing mainly on the mineralogy of these materials. Some data about grain sizes and morphology of the samples are also presented. Feldspars, together with quartz, are the common minerals found in Harmattan dust, but the relative contents of K-feldspars and plagioclase vary markedly in the different zones. This variation is consistent with changes in the relative content of the feldspars in the topsoil, indicating a substantial local contribution to the Harmattan dust. This conclusion is supported by the clay mineralogy of the samples. However the pH of the dust is significantly higher than that of the local soils, indicating that a substantial amount of the dust comes from the Sahara.en_US
dc.identifier.otherhttps://doi.org/10.1080/00167223.2007.10801371
dc.identifier.otherVolume 107, Issue 1,Pages 9-15
dc.identifier.urihttp://ugspace.ug.edu.gh/handle/123456789/28990
dc.language.isoenen_US
dc.publisherGeografisk Tidsskriften_US
dc.subjectClayen_US
dc.subjectDusten_US
dc.subjectHarmattanen_US
dc.subjectMineralogyen_US
dc.subjectSoilen_US
dc.subjectWest Africaen_US
dc.titleMineralogy of dust deposited during the Harmattan season in Ghanaen_US
dc.typeArticleen_US

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