Topic: Obsidian hydration dating - Wikipedia

Obsidian hydration dating (OHD) 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,.

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Obsidian Hydration Dating - 103OnlineArchaeological Dating Obsidian Hydration dating is calculated by converting the hydration layer of a certain thickness to a certain date. They do this by using an equation that establishes a rate for the diffusion of water into the obsidian (Stevenson, 224).

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Obsidian Hydration - An Inexpensive, but Problematic. 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.

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Obsidian Hydration Dating | SpringerLink Obsidian Hydration Dating by IR-PAS.. (%H 2 Om), using polished and parallel-sided obsidian samples with a range in total water content from 0.09 % to 1.57 %. The rate constants are then calculated for an archaeological specimen. The 90 °C diffusion coefficient (D).

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Northwest Research Obsidian Laboratory Home Page - We Put. looking for obsidian hydration services? : Our former obsidian hydration laboratory is now operating independently as Willamette Analytics . Jennifer Thatcher, the longtime experienced hydration analyst at Northwest Research, remains at the helm.

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OBSIDIAN HYDRATION DATING OF A PLEISTOCENE AGE. - NeoNova Obsidian hydration dating relies on the precise measurement of the depth of hydration developed over time in the surface of obsidians, but the loss of surface by natural dissolution at some archaeological sites can result in erroneous age determinations.

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Obsidian Hydration Dating in the Brooks Range, Dept. of. Obsidian Hydration Dating in the Brooks Range, Dept. of Anthropology, University of Washington, Seattle. R. E. Reanier. 1983 ( tDAR id: 357412)