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obsidian dating

noun, Archaeology.
1.
a method of dating obsidian artifacts or debitage by calculating how long it has taken to produce a given thickness of a hydration layer within such matter.
Origin of obsidian dating
1965-1970
First recorded in 1965-70
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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11
13
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