Abstract
AMBIENT water diffuses into the exposed surfaces of obsidian, forming a hydration layer which increases in thickness with time to a maximum depth of 20–40 µm (ref. 1), this layer being the basic foundation of obsidian dating2,3.
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LEE, R., LEICH, D., TOMBRELLO, T. et al. Obsidian hydration profile measurements using a nuclear reaction technique. Nature 250, 44–47 (1974). https://doi.org/10.1038/250044a0
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DOI: https://doi.org/10.1038/250044a0
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