Archaeological Research Facility

The analysis here of a variety of artifacts from a number of sites or site groups in the El Segundo project area is dominated by obsidian sources along the Jemez Lineament, and a variety of rock types likely typical of the local geology. One piece of obsidian debitage was produced from the Government Mountain source in the San Francisco Volcanic Field or northern Arizona, over 370 linear km west. Government Mountain obsidian has occurred in El Segundo project sites and other Archaic contexts in the Grants, New Mexico area just south of El Segundo (Birkmann et al. 2018). One dacite projectile point base was produced from the San Antonio Mountain source in the Taos Plateau Volcanic field over 250 linear km north.