ARCL 203 Lecture Notes - Lecture 14: Hertzian Cone, Debitage, Cryptocrystalline
27 Mar 2018
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*case studies on re tting, replication, use-wear on thursday. *how to make stone tools and their manufacture. An arrow head/ a spear head (deliberately shaped) Needs to be homogenous (not a lot of inclusions) (no insertions of granite/ sandstones) All those three a ects how energy ows in the rock. *hertzian cone- vibration moving through the rock. Hard/soft hammer percussion ( ake scars will be more shallow-soft)* One side of the ake will have the striking platform and ripples (ventral surface) The other side will have the ridges and spines and scars (dorsal surface) Microblades, tiny little ake of stone, has parallel edges, has speci c ake scars, extremely e cient. Doesn"t need to be made from a big rock. Microblade composite tools made up of antler,
