Society for American Archaeology Exchange Implications of Obsidian Source Analysis from the Lower Rio Verde Valley, Oaxaca, Mexico Author(s): Arthur A. Joyce, J. Michael Elam, Michael D. Glascock, Hector Neff and Marcus Winter Source: Latin American Antiquity, Vol. 6, No. 1 (Mar., 1995), pp. 3-15 Published by: Society for American Archaeology Stable URL: http://www.jstor.org/stable/971597 . Accessed: 20/05/2014 23:42 Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at . http://www.jstor.org/page/info/about/policies/terms.jsp . JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact
[email protected]. Society for American Archaeology is collaborating with JSTOR to digitize, preserve and extend access to Latin American Antiquity. http://www.jstor.org This content downloaded from 128.138.73.68 on Tue, 20 May 2014 23:42:30 PM All use subject to JSTOR Terms and Conditions l_ - EXCHANGE IMPLICATIONS OF OBSIDIAN SOURCE ANALYSIS FROM THE LOWER RIO VERDE VAT,T,1ZY,OAXACA, MEXICO Arthur A. Joyce, J. Michael Elam, Michael D. Glascock, Hector NeS, and Marcus Winter This article considersthe resultsof instrumentalneutron-activation analyses of 61 obsidianartifacts recoveredfrom excavations at four archaeologicalsites in the lower Rio Verdevalley on the Pacifc coast of Oaxaca, Mexico. Determinationsof sourcelocations of theseartifacts permit the examinationof changesin obsidianexchange patterns spanning the late Middle Formativeto the Classic period.