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Obsidian hydration is not effective on surfaces that are uneven due to gradual weathering caused by natural forces.Thermoluminescence dating is used for rocks, minerals, ceramics and burned features.
This technique of dating obsidian artifacts measures the microscopic amount of water absorbed on freshly broken surfaces.
Obsidian is the volcanic glass that was sometimes used as raw material for the manufacture of stone tools.
Obsidian is found in the western United States, Alaska, Central America, and elsewhere.
The abundance of decorated ceramics from the park will be helpful in fixing the time of occupation.
Ceramic samples will be subjected to mineralogical analysis to determine whether or not they were made of local clays.
Not all tree species are sufficiently sensitive to display distinctive variations in their ring characteristics, particularly when growing in temperate climates. Without doubt, it has made the greatest single contribution to the development of archaeology since geologists and prehistorians escaped from the constraints of historical chronology in the nineteenth century.