I am a geoarchaeologist, specializing in the study of the raw materials used to make stone tools during the Middle and Lower Palaeolithic periods in southern France and in Israel, plus some work on more recent assemblages such as Upper Palaeolithic sites in Europe, and Neolithic to Bronze Age sites in southern France and in Israel.
This involves studies of petrographic, chemical, isotopic and micropalaeontological methods useful for distinguishing between rock types (especially flint) from different geologic sources so that the sources of raw materials used to make stone tools in archaeological assemblages can be identified.
Over the years, it has developed into an investigation of prehistoric strategies of transport of raw materials across the landscape, vis-à-vis distance, difficulty of terrain, and other factors, and development of gravity models and resource selection functions as a method of assessment of prehistoric behaviour with respect to lithic source use in its landscape context.