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A New Obsidian Hydration Rate for Certain Obsidians in the American Southwest

  • Frank J. Findlow, Victoria C. Bennett, Jonathon E. Ericson and Suzanne P. De Atley

Abstract

A new hydration rate is presented for the Government Mountain-Sitgreaves Peak obsidian source in Arizona. It is based on an analysis of hydration measurements from a series of independently dated obsidian artifacts from that source. Since obsidian obtained from Government Mountain-Sitgreaves Peak was widely traded in the prehistoric Southwest, the new hydration rate should provide archaeologists working in many parts of the Southwest with a reliable and inexpensive absolute dating technique.

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A New Obsidian Hydration Rate for Certain Obsidians in the American Southwest

  • Frank J. Findlow, Victoria C. Bennett, Jonathon E. Ericson and Suzanne P. De Atley

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