Boudad, L. and Kabiri, L. and Farkh, S. and Falguères, C. and Rousseau, L. and Beauchamp, J. and Nicot, É. and Cairanne, G. (2003) U/Th dating of a Quaternary travertine from southern Morocco: Palaeoclimatic consequences during Middle and Upper Pleistocene Datation par la méthode U/Th d'un travertin quaternaire du Sud-Est marocain : Implications paléoclimatiques pendant le Pléistocène moyen et supérieur. Comptes Rendus - Geoscience, 335 (5). pp. 469-478.

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Abstract

A large travertine outcrop south of Errachidia, southern Morocco, was studied and U/Th dated. The carbonate fraction was provided by groundwaters then, as now, from the eastern High Atlas percolating through the regional Infra-Cenomanian aquifer. There were two main periods of accumulation at ca 262 kyr BP and 20-11.5 kyr BP separated by a long discontinuity with some limited weathering and erosion and correlated in part with a period of erosion at 30-20 kyr BP further to the west. The two travertine-deposition periods suggest increased rainfall and/or cooler thermal conditions in the eastern High Atlas source regions. Massive travertine accumulation ceased at the end of the Upper Pleistocene. © 2003 Académie des sciences. Publié par Éditions scientifiques et médicales Elsevier SAS. Tous droits réservés.

Item Type: Article
Uncontrolled Keywords: paleoclimate; Pleistocene; Quaternary; travertine; uranium series dating, Errachidia; Morocco
Subjects: Earth and Planetary Sciences
Divisions: SCIENTIFIC PRODUCTION > Earth and Planetary Sciences
Depositing User: Administrateur Eprints Administrateur Eprints
Last Modified: 31 Jan 2020 15:46
URI: http://eprints.umi.ac.ma/id/eprint/2960

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