Redefining the Working Assumptions of Obsidian Hydration Dating

منو

" Redefining the Working Assumptions of Obsidian Hydration Dating "
Stevenson, Christopher M; Gottesman, Mike; Macko, Michael

Document Type	:	AL
Record Number	:	940577
Doc. No	:	LA1z21m5rd
Language of Document	:	English
Main Entry	:	Stevenson, Christopher M; Gottesman, Mike; Macko, Michael
Title & Author	:	Redefining the Working Assumptions of Obsidian Hydration Dating [Article]\ Stevenson, Christopher M; Gottesman, Mike; Macko, Michael
Title of Periodical	:	Journal of California and Great Basin Anthropology
Volume/ Issue Number	:	22/2
Date	:	2000
Abstract	:	Recent experimental work has shown that the rate of hydration is significantly influenced by the amount of intrinsic water (0H-) contained within the unweathered obsidian. A value for the intrinsic water concentration may be obtained through a nondestructive measurement of glass density, thereby permitting obsidian hydration rates to be determined for individual artifacts. As a result of these discoveries, many of the assumptions used in the normal application of obsidian hydration dating are now in need of revision. This article presents a revised set of working assumptions and procedures for implementation of the obsidian dating method and evaluates the ability of calibrations to produce chronometric dates that correspond with radiocarbon assays.