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Taille et polissage de la pierre par des populations agricoles néolithiques en zone refuge saharienne : (Dhar Nema, Mauritanie sud-orientale)

Abstract : Ordovician sandstone and schist indented cliff, punctuated with doleritic intercalations, Dhar, Nema is the southeast ending of Dhar's bow in South-Eastern Mauritania. ln a general context of Sahara' s aridification, its water system connected to powerful fossil groundwaters allowed human groups gathered by the climatic pejoration to find refuge there, from the 3rd to 1st millennium BC. This new environment showed itself favorable to the appearance of social and technical innovations leading to a local agricultural development. Typotechnological study of the lithic material showed distinctions in the operational sequence according to blank's type. Besides an abundant grinding material, two original tool types are emphasized from the toolkit : the big knapped axes and the disks. This big set of tools, including some artifacts were also found on Dhar Oualata, finds some resonance with that of the Malian region located between Nioro du Sahel and Southern plains Assaba in Mauritania.
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  • HAL Id : tel-02495731, version 1

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Thibaut Vallette. Taille et polissage de la pierre par des populations agricoles néolithiques en zone refuge saharienne : (Dhar Nema, Mauritanie sud-orientale). Archéologie et Préhistoire. Université Panthéon-Sorbonne - Paris I, 2015. Français. ⟨NNT : 2015PA010603⟩. ⟨tel-02495731⟩

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