SESSION 6 - Characterising lithic sources
Chert in its diverse natural occurrences: geo-tools for a better definition of the sourcing of secondary outcrops

Precise identification of siliceous geo-resources used during prehistory still raises many problems, and archaeologists have an ever-increasing need for this data. The purpose of this study is to provide a database containing an exact and descriptive identity for each different geological type of chert found within a region. The database in this study is being developed for the administrative regions of Rhône-Alpes, Auvergne, Aquitaine and Provence-Alpes-Côte d'Azur. It will contribute to an accurate understanding of precise movements and exchange of raw materials and therefore also to the behaviour of prehistoric groups.