Journal of California and Great Basin Anthropology

Although the point is too sandblasted to yield a reliable obsidian hydration measurement, Clovis points are generally associated with cultural deposits dating to about 11,000 radiocarbon years before the present. The specimen was, however, sourced by X-ray fluorescence to the obsidian deposits near Coso Hot Springs (the Coso, or Sugarloaf source; Ericson, Hagan, and Chesterman 1976) in southwestern Inyo County, about 150 km. northwest of the site where the point was found. This suggests that use of the obsidian deposits near Coso Hot Springs began perhaps as early as 11,000 years ago.