| Obsidian Hydration Analysis (OHA) - This exhibit contains information on a technique used to determine the age of antiquities.
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| Obsidian Hydration Laboratory - A description of the facility located at Sonoma State University.
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| Obsidian Hydration Results for Pleasanton Sites - Two charts displaying profiles and results by source.
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| Obsidian Hydration Analysis Service (OHAS) - Archaeological laboratory investigating prehistory using: transmitted light microscopy, reflected light microscopy, macroscopic analysis, satellite navigation, geographic information systems, and laser technology.
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| Diffusion Laboratory - Provides obsidian hydration dating through the use of infrared spectroscopy.
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| What is Obsidian Hydration Analysis? - A brief overview of the methodology of Obsidian Hydration by Jeff Hamilton.
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| International Association for Obsidian Studies (IAOS) - Organization with the goal of providing access to resources that will be of use to the international community of researchers working with obsidian glass. Features articles, news, membership details, bibliography, and links to related sites.
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| ODDSIMS, A New Method of Dating Hydrated Obsidian Artifacts - Article briefly describes the potential of Obsidian Diffusion Dating by Secondary Ion Mass Spectrometry (ODDSIMS).
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| The Obsidian Clock - A press release from the Oak Ridge National Laboratory reporting that by using secondary ionization mass spectrometry, experimental calibration, and sophisticated modeling methods; is developing a technique to accurately determine when an obsidian tool was crafted.
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