The structural water concentration of the unhydrated bulk obsidian is highly correlated with the pre-exponential and activation energy and may be used to estimate the Arrhenius constants.
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To find out more about obsidian and its importance to people who once occupied national park land, search for “obsidian” on the National Park Service home page.
Thermoluminescence dating is used for rocks, minerals, ceramics and burned features.
At present there is no robust and cost-effective protocol for measuring hydroxyl concentration.
Suggested guidelines for obsidian hydration dating are developed using a case study.
The principle behind obsidian hydration dating is simple—the longer the artifact surface has been exposed, the thicker the hydration band will be.
Obsidian hydration can indicate an artifact's age if the datable surfaces tested are only those exposed by flintknapping.
They and subsequent researchers developed distinct versions of obsidian hydration method consisting of both empirical rate and intrinsic rate development, thus refining the method.
However, in spite the accurately measured rinds beyond digital optical microscopy employing infrared spectroscopy and nuclear analysis, the traditional empirical age equation produce occasionally satisfactory results but still fail to produce a reliable chronometer.
Obsidian can be dated due to its water absorption properties.