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Périodes arides du Quaternaire récent et déplacement des sables éoliens dans les Zibans (Algérie)

Abstract : A band of wind-blown sand crosses the Ziban hills NW of Biskra in North-central Algeria. Comparable influxes of sand and gypseous dust took place several times during the Late Pleistocene and Holocene. They appear as dunes and as more or less indurated deposits of gypsum banked up against the flanks of the Ziban hills. Alternating with the deposits are alluvial sediments and palaeosoils developped during wetter phases. The las wet phase lasted from about 6300 to 4800 BP. Reactivation of the sand during the latest dry interval has resulted in a flow of sand from the NW to the SE, i.e. from Hodna towards the Sahara. The saharan dune fields are thus being supplied from their less arid margin.
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https://hal-amu.archives-ouvertes.fr/hal-01543047
Contributor : Jean-Louis Ballais <>
Submitted on : Tuesday, June 20, 2017 - 2:23:24 PM
Last modification on : Friday, June 19, 2020 - 6:28:01 PM
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Jean-Louis Ballais, Alain Marre, Pierre Rognon. Périodes arides du Quaternaire récent et déplacement des sables éoliens dans les Zibans (Algérie). Revue de géologie dynamique et de géographie physique, UPMC, 1979, 21 (2), pp.97-108. ⟨hal-01543047⟩

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