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Induced Obsidian Hydration Experiments: An Investigation in Relative Dating

Published online by Cambridge University Press:  22 February 2011

KIM J. Tremaine  and
David A. Fredrickson
KIM J. Tremaine
Affiliation:
Anthropology Department, Sonoma State University, Rohnert Park, CA 94928
David A. Fredrickson
Affiliation:
Anthropology Department, Sonoma State University, Rohnert Park, CA 94928
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Abstract

Induced obsidian hydration experiments have been conducted over the last six months at Sonoma State University. Our initial focus has been to assess the influence of experimental conditions on hydration development within a thermally controlled pressure reaction vessel. Although an ultimate goal is to calculate source-specific rates for local obsidians, given current uncertainties regarding the ability to reliably express hydration widths as calendar years, a more immediate goal is to develop a means to compare hydration rim measurements of samples from one obsidian source relative to another so that archaeological assemblages containing obsidians from two or more sources can be placed into a time series. Induced hydration experiments are expected to provide data that illustrate the relationship between hydration measurements of different obsidians with temporal equivalency. Results and implications of initial experiments are discussed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 123: Symposium L – Materials Issues in Art and Archaeology I , 1988 , 271
Copyright
Copyright © Materials Research Society 1988

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