Archaeological Research Facility

The four pieces of obsidian debitage are allproduced from the Red Hill obsidian source located within a radius of two km, essentially on site(Table 1; Figure 1). This source is actually a discontinuous Neogene remnant rhyolite dome complex that has been partly subsumed by Quaternary mafic volcanism, much of it fissure flows that have formed mesas as well as cinder cones such as Red Hill (see http://swxrflab.net/redhill.htm; Shackley 1995, 2005)