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Formations éoliennes et phases arides quaternaires dans le Bas-Sahara algéro-tunisien

Abstract : In the Lower-Sahara, four sand seas took place since the Pliocene : one during the final Pliocene, two fossil sand seas with well preserved features : the Upper Pleistocene gypcrete sand sea and the el Oussif sand sea (probably dating from the Lower Holocene), then the present-day Great Eastern Erg. They were built up by winds blowing in the same sens as the predominant efficient present-day winds during dryer climatic periods than the actual one.
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https://hal-amu.archives-ouvertes.fr/hal-01563718
Contributor : Jean-Louis Ballais <>
Submitted on : Friday, July 21, 2017 - 2:38:43 PM
Last modification on : Thursday, January 18, 2018 - 1:35:18 AM
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Jean-Louis Ballais. Formations éoliennes et phases arides quaternaires dans le Bas-Sahara algéro-tunisien. Würzburger Geographische Arbeiten, University of Würzburg, 1993, Geowissenschaftliche Beiträge zu Forschung, Lehre und Praxis - Festschrift für Horst Hagedorn, 87, pp.107-119. ⟨hal-01563718⟩

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