Abstract
Excavated between 1970 and 1980, abri Gay (Poncin, Ain) has delivered, in its 12m deep surface, a stratigraphic sequence with an upper Magdalenian level (F2d) and an important Azilian level (F2b) containing painted and engraved pebbles. The lithic industry is original and marked by an association between backed bladelets and backed-edged points in the whole late upper Paleolithic sequence. Concerning the fauna, the reindeer dominates the Magdalenian horizon but is also present in the Azilian one. Dating from Ancient Dryas, the Magdalenian backed-edged points can still be considered an early testimony for this kind of armature, and a particularity within the Jura Mountains. Nevertheless, the remaining uncertainties about the stratigraphic context and chrono-cultural coherence of the lithic industries have never been treated. Based on a taphonomic approach and a techno-economic analysis of the lithic industries of the two stratigraphic horizons, this study discusses the integrity of the unities established in the excavation context, and the value of the assemblies. The results allow to redefine the sequence and to write a new scenario articulated via a two-sided Azilian face.
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