Ref ID:	33191
Ref Type:	Journal Article
Authors:	Morgenstein, Maury Riley, Thomas J.
Title:	Hydration-rind dating for Basaltic glass: a new method for archaeological chronologies
Date:	1975
Source:	Asian Perspectives (1974)
Abstract:	A review of the historical development of hydration-rind dating is presented. Basaltic glass has been found to hydrate at a linear rate. During glass hydration an immobile product layer is formed at the interface between reactants. The immobile product layer develops from a microfracture chemical-channel zone. This layer converts to a band of palagonite. The rate of palagonite banding is directly related to the chemistry of the glass, the availability of water, and the temperature during hydration. Rate formulas are presented. Archaeological sites in the Hawaiian Islands provide a test of the validity of this new dating tool. Sites from two islands are discussed in relation to the correspondence of hydration-rind with C-14 dates. The immediate prospects for the use of the method and tentative conclusions are offered.
Date Created:	12/28/2002
Volume:	17
Number:	2
Page Start:	145
Page End:	159