Holocene Saharan dust deposition on the Cape Verde islands: Sedimentological and Nd-Sr isotopic evidence

被引：58
|
作者：
Rognon, P
CoudeGaussen, G
Revel, M
Grousset, FE
Pedemay, P
机构：
[1] UNIV CAEN, UFR SCI TERRE & AMENAGEMENT REG, F-14032 CAEN, FRANCE
[2] UNIV BORDEAUX 1, DEPT GEOL & OCEANOG, URA CNRS 197, F-33405 TALENCE, FRANCE
来源：
SEDIMENTOLOGY | 1996年 / 43卷 / 02期
关键词：
D O I：
10.1046/j.1365-3091.1996.d01-8.x
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
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 fi om the weathering of local basaltic bedrock.
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页码：359 / 366
页数：8
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