Obsidian Sources of Northern Baja California: The Known and the Unknown

Document Type


Publication Date



Taylor & Francis


The obsidian sources of northern Baja California remain understudied even though archaeological work in the region has expanded in recent decades. In this article, we provide descriptions and geochemical characterizations for several known and as-yet unlocated sources of artifact quality obsidian in the northern region of Baja California. These data include two new sources recorded in the field, one additional unknown source identified in an archaeological assemblage, and one unknown source found only in secondary geological deposits. We also address the distribution of obsidian in secondary geological contexts. This article should serve as the basis for future provenance work as well as to further our understanding of indigenous trade networks and procurement strategies.