Wari Lithic Technology on the Northern Coast of the Andes: Geochemical, 2D Geometric Morphometric, and Technological Analyses of Obsidian Bifaces From San José de Moro

This study examines Wari obsidian production in a cache of 39 bifaces found at the Late Moche site of San José de Moro (Jequetepeque Valley, North Coast of Peru, 700–850 ad ). Portable X‐ray fluorescence, geometric morphometric, and technological analyses were used to investigate raw material provenance and bifacial production. The artifacts were made from obsidian obtained from two major Andean sources, Alca‐1 and Quispisisa. The assemblage shows recurrent shape regularities, but not strict uniformity: bifaces differ in reduction strategies, structural configuration, and variability between sources. These differences are best understood as technical choices made within a shared Wari technological framework.