See the History of Glass Making, if that's what interests you.
Chronostratigraphy Geochronology Isotope geochemistry Law of superposition Luminescence dating Samarium—neodymium dating. Water vapor pressure may also affect the rate of obsidian hydration.
The most important of these are chemical composition and temperature, although water vapor pressure and soil alkalinity may also play a role in some contexts.
The effects of these variables have often been summarized and will not be discussed further here (Michels and Tsong 1980; Friedman and Obradovich 1981; Freter 1993; Hull 2001; Stevenson et al., 1993, 1998, 2000; Friedman et al. 1999, Ridings 1996; see Skinner and Tremaine 1993 for additional references).
Comparisons are made between the results of obsidian hydration and other obsidian hydration dating range methods. Retrieved from " https: Pages using citations with accessdate and no URL.
The second stage regards the determination of the saturation layer, i. The technician measures the microscopic amount of water absorbed on freshly broken surfaces.