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one of the United States' premier prehistoric sources of obsidian.
Welcome to the International Association for Obsidian Studies (IAOS) home page. From here, you can find out about the IAOS and explore technical information related to obsidian characterization ("sourcing") studies and obsidian hydration dating methods.
IAOS BULLETIN 58 (WINTER 2017) IS OUT: All issues of the IAOS Bulletin are now available for downloading as searchable Adobe Acrobat documents. Point, click, and print to complete your library. And don't forget that a cumulative and searchable PDF is also available in the Member's Lounge.
THE IAOS PDF LIBRARY: We're assembling an ever-expanding collection of obsidian-related full-text articles, reports, monographs, papers, theses, and dissertations, all in searchable Adobe Acrobat (PDF) format. If you have PDF's that you'd like to contribute to the new PDF library, we would very much like to hear from you! To add a reference to the library, simply send an email to email@example.com, write "IAOS LIBRARY" in the subject line of the email, and attach the PDF's that you'd like to contribute. Last addition: 02/12/2018.
Featured PDF: Fingerprints in the Great Basin (2005), by Lynn Haarklau et al.
IAOS SOURCE CATALOG REVIWERS ARE NEEDED: While we continue to maintain the IAOS World Obsidian Source Catalog, our knowledge of obsidian sources outside of the United States and Canada is sometimes incomplete or inaccurate. We would like to invite any regional obsidian source specialists to have a look at the Source Catalog and get back to us (see the email address above) if you spot any problems. We'll be happy to acknowledge your participation and we'd initially like to thank Dr. Maria Victoria Fernandez for her help in sorting out sources in Patagonia (Argentina and Chile), South America.
IOC 2019 IS COMING: Here's an event to get on your calendar early - click HERE for a PDF of information regarding the 2019 International Obsidian Conference that will be held in Hungary between May 27-29, 2019. For more details, see the conference website.
TWENTY-FIVE YEARS ON THE CUTTING EDGE OF OBSIDIAN STUDIES: Edited by Carolyn Dillian, this volume of selected readings from the IAOS Bulletin is now available for online ordering at $10 per copy (plus postage). Click HERE for a sample and all the details on how to instantly order your copy. For a review (PDF) of the book, click HERE.
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