Holocene Saharan dust deposition on the Cape Verde Islands: sedimentological and Nd-Sr isotopic evidence
Article first published online: 28 JUN 2008
Volume 43, Issue 2, pages 359–366, April 1996
How to Cite
ROGNON, P., COUDÉ-GAUSSEN, G., REVEL, M., GROUSSET, F. E. and PEDEMAY, P. (1996), Holocene Saharan dust deposition on the Cape Verde Islands: sedimentological and Nd-Sr isotopic evidence. Sedimentology, 43: 359–366. doi: 10.1046/j.1365-3091.1996.d01-8.x
- Issue published online: 28 JUN 2008
- Article first published online: 28 JUN 2008
- Manuscript received 1 December 1994; revision accepted 9 October 1995.
Holocene aeolian silts deposited on the Cape Verde Islands provide information about the origin of African palaeodusts that have fallen on the north-eastern Atlantic ocean over the last 10 000 years. Sedimentological composition indicates that most of these aeolian silts are unquestionably of continental origin. Their Sr and Nd isotopic composition identifies a Saharan origin-suggesting transport by Harmattan winds. We estimate that Saharan dust comprises 75–95% of material in these Holocene silts, the rest coming from the weathering of local basaltic bedrock.