Science. 1969 Sep 26;165(3900):1354-6. doi: 10.1126/science.165.3900.1354.
A hydration rate for obsidian of 3.5(4) microns squared per 1000 radio-carbon years has been established at the Nightfire Island archeological site in northern California and provides a means to date other prehistoric Klamath Basin sites. The new rate follows the form of the hydration equation formulated by Friedman and helps to refute claims made for other hydration equations.
在加利福尼亚州北部的 Nightfire 岛考古遗址上,确定了黑曜石的水合速率为每 1000 个放射性碳年 3.5(4) 微米平方,这为其他史前克拉马斯盆地遗址的年代测定提供了一种方法。新的速率遵循 Friedman 提出的水合方程形式,并有助于反驳其他水合方程的主张。