Fontugne, M. and Oujaa, A. and Ouchaou, B. and Gourari, L. and Zouhri, S. and Moreau, C. and Kaltnecker, E. and Dumoulin, J.P. and Werner, M. and Benabdelhadi, M. (2012) On the occurrence of ursus arctos during the early holocene in the middle atlas (Morocco). Dating and palaeoenvironmental implications Sur la presence d'ursusarctos au début de uholocène dans le moyen atlas (Maroc). Datations et implications paléoenvironnementales. Quaternaire, 23 (2). pp. 157-161.

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Abstract

Near Boulmane city, in the limestone formation of El Minchare, the Ifri Oussaïd cave open over the Middle Atlas plateau at 2075 m high. From 2005 to 2007 excavations provided charcoal associated to bone remains mainly belonging to Ursus arctos, at last 156 identified bones from five bears. Paleontological studies describe bear of small size (Ouchaou, 2008). Datations of charcoal from stalagmitic floors above bear bone layer give ages between 5 220 ± 30 and 5 865 ± 30 yrs 14C BP, while the collagen of a radius bone was dated at 7 300 ± 40 yrs 14C BP. This date, taking in account the local climatic pattern, confirms the presence of Ursus arctos at the beginning of the Holocene period in North Africa but also point out to the importance of environmental changes in the Middle Atlas and their potential importance for the extinction of Ursus arctos.

Item Type: Article
Uncontrolled Keywords: bear; bone; environmental change; extinction; Holocene; paleoenvironment; paleontology; radiocarbon dating; species occurrence; stalagmite, Morocco, Ursus arctos
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/2919

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