Emergent Statecraft and Landscape of Power: Analysis of Co Loa Ceramic Roof Tiles Through Thin-Section Petrography

Richard M. Nicolas

This paper investigates power, architecture, and material symbolism at Co Loa in northern Vietnam’s Red River Valley (RRV) from 300 to 100 BCE, prior to Han annexation. Although Co Loa is widely recognized as one of the earliest large, fortified settlements in mainland Southeast Asia, and possibly among the region’s earliest urban formations, its architectural ceramics have never been systematically analysed using thin-section petrography. Few previous studies have examined the production technology of Co Loa roof tiles from this period, leaving a critical gap in understanding how architecture articulated emerging statecraft. Using materials from recent excavations, museum collections, and field surveys, this study presents novel and preliminary findings from the first petrographic analysis of Co Loa roof tiles. Macroscopic and microscopic examinations reveal standardized clay preparation, fine slip application on both surfaces, and distinctive wavy parallel treatments unique to the site. These patterned technological choices indicate controlled production and shared design principles rather than isolated craft activity. This paper argues that roof tiles were material instruments of authority, situating architectural ceramics within contexts of early urbanism and political centralization. Technological consistency and restricted distribution signal coordinated labour and symbolic messaging of identity.