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Late Pleistocene and Holocene dune activity and wind regimes in the western Sahara Desert of Mauritania

Nicholas Lancaster, Gary Kocurek, Ashok Singhvi, V. Pandey, Max Deynoux, Jean-Francois Ghienne and Khalidou Lo
Late Pleistocene and Holocene dune activity and wind regimes in the western Sahara Desert of Mauritania
Geology (Boulder) (November 2002) 30 (11): 991-994

Abstract

The western Sahara Desert in Mauritania is dominated by extensive sand seas consisting largely of linear dunes. Analyses of Landsat images, geomorphic and stratigraphic studies, and optically stimulated luminescence dating of dunes in the Azefal, Agneitir, and Akchar sand seas provide evidence that three main generations of dunes were formed during the periods 25-15 ka (centered around the Last Glacial Maximum), 10-13 ka (spanning the Younger Dryas event), and after 5 ka. The wind regimes that occurred during each of these periods were significantly different, leading to the formation of dunes on three distinct superimposed trends--northeast, north-northeast, and north--and the development of the sand seas as composite geomorphic features.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 30
Serial Issue: 11
Title: Late Pleistocene and Holocene dune activity and wind regimes in the western Sahara Desert of Mauritania
Affiliation: Desert Research Institute, Reno, NV, United States
Pages: 991-994
Published: 200211
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 19
Accession Number: 2002-079176
Categories: Quaternary geology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: With GSA Data Repository Item 2002117
Illustration Description: illus. incl. sketch maps
N19°00'00" - N20°00'00", W17°00'00" - W15°45'00"
Secondary Affiliation: University of Texas at Austin, USA, United StatesPhysical Research Laboratory, IND, IndiaCNRS-Universite Louis Pasteur, FRA, FranceUniversite de Nouakchott, MRT, Mauritania
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 200224
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