Observations sur les pièces bifaciales et les chaînes opératoires de façonnage dans les sites du Pléistocène moyen de Soucy (Yonne)

Observations on the bifacial tools and on 'chaînes opératoires' in the Middle Pleistocene sites of Soucy (Yonne) : The Middle Pleistocene sites of Soucy, in Yonne, are positioned within an alluvial sequence related to the isotopic stage 9 (Holsteinian). Seven of the nine archaeological levels have yielded bifacial pieces and portions of the "chaînes opératoires"for producing bifacial pieces. Given the type of the remains in each level and their ascription to the "chaînes opératoires" for producing bifacial pieces, it is possible to distinguish three categories of sites: sites with production; sites with consumption; sites with production and consumption of bifacial pieces. Observations conducted on the several lithic assemblages from Soucy reveal that the "chaînes opératoires" for producing bifacial pieces are separated in lime and space whereas the "chaînes opératoires"for "debitage" are represented in their entirety in every site.