Late Mesolithic notched blades from Western Europe and North Africa: technological and functional variability

During the 7th and 6th millenniums BC, major changes occurred over a widespread area in the lithic industries of the late Mesolithic. We focused our research on notched blades and bladelets knapped by pressure or indirect percussion. We managed to define this technical process by showing that these notches result from voluntary retouch, with variability in retouch modes and in uses (different operating processes and worked materials). It is a simple technical concept, connected to the recurring mode of operation, but with varied functional purposes that comes out as a result of this survey carried out in France, Belgium, Spain, Morocco and Tunisia.