Abstract: <p>Stable carbon and nitrogen isotope analysis of 571 archaeobotanical samples was performed to assess agricultural practices at Cerro de Oro in the Cañete Valley, Peru, during the transition between the Early Intermediate Period and the Middle Horizon. This thesis presents a comprehensive range of δ13C and δ15N values for the major C3 and C4 plant resources at the site. No differences were… more