The hydration rate is typically established empirically through the calibration of measured samples recovered in association with materials whose cultural age is known or whose age can be radiometrically determined, usually through radiocarbon dating methods (Meighan 1976).
The hydration rate can also be determined experimentally, an approach that has shown increasing promise in recent years (Friedman and Trembour 1983; Michels et al. An appropriate section of each artifact is selected for hydration slide preparation.
SYNONYMS OR RELATED TERMS: hyalopsite, Iceland agate, mountain mahogany CATEGORY: geology DEFINITION: A jet-black to gray, naturally occurring volcanic glass, formed by rapid cooling of viscous lava.
This usually requires what is commonly known as a "dating method".
Obsidian breaks with a and is easily chipped into precise and delicate forms.
It was very widely traded from the anciently exploited sources in Hungary, Sardinia, Lipari of Sicily, Melos in the Aegean, central and eastern Anatolia, Mexico, etc.
Lithic technology was a core-flake reduction process that exhibited little temporal change.
Ceramics are absent and thus technological, stylistic, or luminescent dating studies are not possible.