Communities of Practice in an Archaeological “Third Space”: Exploring Five Centuries of Plain Ware Ceramic Production along the Arizona-Sonora Borderlands

Abstract Archaeologists have long interpreted Arizona and Sonora’s Upper Santa Cruz valley as a precolonial “contact zone” or “frontier” between the Trincheras and Hohokam traditions. These models are heavily influenced by the contemporary US-Mexico border and outdated core/periphery models. Furthermore, although plain ware represents most pottery from this region, it has never been used to understand the populations who inhabited the region or to reconstruct local communities of practice. This article provides the first systematic study of plain ware from 23 sites across the Upper Santa Cruz. We incorporate Bhabha’s (2004) “Third Space” theory to suggest that local potter communities actively responded to changing interactions with neighboring populations for more than five centuries. By focusing our attention on local ceramic production, and critically evaluating cultural boundaries, we reposition the Upper Santa Cruz as neither a periphery nor frontier but an area rich in its own dynamic cultural expressions and regional agency.