Ten years of analysis in obsidian procurement from the Early to the Late Holocene on both sides of the temperate Andes

CORTEGOSO, V; GIESSO, M; DURÁN, V.; SANHUEZA, L; GLASCOCK, M.

Memphis

Congreso; A World of Obsidian Symposium. 77th Annual SAA Meeting,; 2012

Society for American Archaeology

Trace element analysis has been performed on more than 1000 samples from 106 archaeological sites dating between 9000 and 300 BP, and six sources. Analyses were conducted to determine the spatial distribution of sources and to test models of mobility and exchange in the region. Different devices were used to characterize the obsidian samples (Elva-X table top and Bruker III-V portable X-ray fluorescence spectrometers, and NAA). This poster discusses how the increase in the number of samples and the improvement in our knowledge about obsidian source distribution changed our interpretations about obsidian circulation since the first 2002 NAA results.