ANT317H5 Lecture Notes - Lecture 2: Conchoidal Fracture, Ripple Marks, Paleo-Indians
Document Summary
Group of people who have specialized in paleo-indians: chris ellis, brain deller. Pre-contact chronology of southern ontario: memorize chart. Lithic technology: made from rocks - means it also survived, one of the prime examples of material culture that we have. Lithic = stone tools and debitage (waste: removing flakes from core with hammer in a controlled manner using the principle of conchoidal fracture. Conchoidal fracture: the core can be chert (rock), obsidian, even glass, another rock is used or piece of bone and is used as a hammer, breakage is predictable, point of percussion - where the core is hit. Flakes are broken off: radiates waves (creates ripple marks) and the outer edge of the cone breaks off as a flake, point of percussion and ripple marks can be identified. Fine-grained sedimentary rock: composed of microcrystalline or crypto-crystalline silica, breaks with conchoidal fracture, e. g. Onondaga chert: only material better is high grade obsidian and that comes from volcanoes.
