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Where in the World Does Obsidian Hydration Dating Work?

Published online by Cambridge University Press:  20 January 2017

Rosanna Ridings*
Affiliation:
Department of Earth and Planetary Sciences, Campus Box 1169, Washington University, One Brookings Drive, St. Louis, MO 63130

Abstract

Results of a field study at Pot Creek Pueblo indicate that when effective hydration temperature varies significantly with depth, errors in obsidian hydration age estimates can occur if hydration rate constants are extrapolated to depth-specific effective hydration temperatures. This problem will be particularly severe in continental climates, but will have some effect anywhere the amplitude of the annual surface temperature wave exceeds 2-3°C.

Resumen

Resumen

Investigaciones de campo han producido evidencia de errores potenciales en la técnica de fechamiento por hidratación de obsidiana, que resultan cuando determinaciones en el laboratorio de las constantes utilizadas en la ecuación de Arrhenius son aplicadas a las temperaturas efectivas para hidratación de grosor específico. Este problema serí particularmente severo en climas continentales, pero tambien sucederá dondequiera que la amplitud de la onda de temperatura superficial anual exceda 2-3°C.

Information

Type
Reports
Copyright
Copyright © The Society for American Archaeology 1996

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