Seismicity, magnetic anomaly, and bathymetric data are used to interpret the tectonic structure and history of the Easter plate. The Easter plate is a small oceanic plate in an area of locally anomalous sea-floor spreading activity that internally disrupts the tectonic continuity of the Nazca-Pacific divergent plate boundary west of Easter Island. Active sea-floor spreading centers, mapped as the plate’s eastern and western boundaries, are positioned along the crests of two northwardly-trending topographic rises, herein referred to as the Este and Oeste Rises. Active fault zones characterized by rugged topography are mapped as the plate’s northern and southern boundaries. The...