A hydration rate for obsidian of 1.3 μm2 per 1,000 radiocarbon years has been calculated for the lower Columbia River Valley of Oregon and Washington. The rate provides a means for dating prehistoric archaeological sites containing obsidian in terms of their radiocarbon age.
No takes yet. Share an insight, caveat, or question.
Rick Minor (1977) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: