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Line 17: Several technological criteria characterise the definition of the centripetal cores. * The primary reduction surface is shaped such that the morphology of the product is a function of the lateral and distal [[wikt:convex\|convexities]] of the surface, which serve to guide the [[Hertzian cone\|shock wave]] of each flake. * Centripetally worked cores may possess either one or two faces of detachment and [[striking platform]]s can vary from unprepared, cortical to faceted ''[[~~chapeaux~~chapeau de gendarme]]'' ("cocked hat") shapes. * Centripetally-reduced cores were made via hard hammer percussion, which was probably necessary when attempting to work steep platform angles.

Prepared-core technique: Difference between revisions