1592953015000 1312632483000 term-27862 1616541349981 1312632518000 1616290217179 adlib fitz-online adlib-term-27862 95a2ee60-cca7-3490-816b-5e5db31dcd60 2 1 scope note Method of dating by measuring, on an exposed surface of obsidian, the thickness of the hydration layer caused by the natural intake of water on that surface from the atmosphere. HOLHZR K.KT.AFU.ALO.AXC.BZY.ARI.BOK 1 code K.KT.AFU.ALO.AXC.BZY.ARI.BOK 1 obsidian hydration dating reference term-27881 adlib-term-27881 93f71aad-6d1c-3c6d-a97a-5053c8463beb dating obsidian hydration dating term