Exchange of Quispisisa Obsidian in Nasca: New Evidence from Marcaya, Kevin J. Vaughn, Michael D. Glascock
Andean Past

The Puzolana Obsidian Source: Locating the Geologic Source of Ayacucho Type Obsidian, Richard L. Burger, Michael D. Glascock
Andean Past

The Jampatilla Obsidian Source: Identifying the Geological Source of Pampas Type Obsidian Artifacts from Southern Peru, Richard L. Burger, Katharina J. Schreiber, Michael D. Glascock, Jose Ccencho
Andean Past