Obsidian Hydration Relative Dating

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Obsidian hydration dating - Wikipedia
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Obsidian hydration dating is a geochemical method of determining age in either absolute or relative terms of an artifact made of obsidian . Obsidian is a volcanic glass that was used by prehistoric people as a raw material in the manufacture of stone tools such as projectile points, knives, or other cutting tools through knapping, or breaking off pieces in a controlled manner, such as pressure flaking . Obsidian obeys the property of mineral hydration , and absorbs water, when exposed to air, at we
We have found that the thickness of the hydrated layer developed on obsidian outcrops exposed to the sun and to relative humidities of 30-90% is similar to that formed on other portions of the outcrop that were shielded from the sun and exposed to a relative humidity of approximately 100% .
Obsidian hydration dating (or OHD) is a scientific dating technique, which uses the understanding of the geochemical nature of the volcanic glass (a silicate) called obsidian to provide both relative and absolute dates on artifacts . Obsidian outcrops all over the world, and was preferentially used by stone tool makers because it is very easy to work with, it is very sharp when broken, and it comes in a variety of vivid colors, black, orange, red, green and clear .
They introduced the obsidian hydration dating method to the archaeological community in 1960 . It may be used in two ways: as a relative dating method to determine if one artifact is older or younger than another, or as an absolute dating method where a calendar date (AD/BC) is produced .
Obsidian hydration dating has served as one of the chronological indicators for the Hopewell . Culture earthworks (ca . 200 B .C . . . . remains the basis for relative hydration dating ; but this raises . . .
Tremaine, K .J . and Fredrickson, D .A . 1988 Induced obsidian hydration experiments: An investigation in relative dating . In Sayre, E ., ed ., Materials Issues in Art and Archeology . Materials Research Society Symposium Proceedings 123: 271-278 .
Download Citation | Induced Obsidian Hydration Experiments: An Investigation in Relative Dating | Induced obsidian hydration experiments have been conducted over the last six months at Sonoma . . .
The obsidian hydration dating method, first proposed and developed by Friedman and Smith (1960)~ is based on the fact that nonhydrated obsidian (a volcanic glass) will ab sorb water from the surrounding atmosphere . This fact is well known in both geological and archeological circles, but the process by which hydration occurs is not .
members .peak .org › ~obsidian › pdf › tremaine_1989 .pdf
Two different approaches to the application of obsidian dating have developed: absolute and relative . In the absolute approach, archaeologists have attempted to calibrate hydration measurements with calendar years . Calibration is achieved through the determination of source- and temperature-specifichydration rates . Two types of data
OBSIDIAN HYDRATION DATING - NEW REVIEW . Encyclopedia of Scientiﬁc Dating Methods DOI 10 .1007/978-94-007-6326-5_39-1 # Springer Science+Business Media Dordrecht 2014 Obsidian Hydration Dating Ioannis Liritzis* Laboratory of Archaeometry, Department of Mediterranean Studies, University of the Aegean, Rhodes, Greece Definition Obsidian : Obsidian . . .
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Obsidian Hydration Relative Dating