One of the most important aspects of Big Eddy is that the stratigraphy of the site is clear and has remained virtually undisturbed for over 14,000 years. As a result, the deposits from different periods have been separated vertically from each other (CAR 2006; Chandler 2001a). The stratigraphy of Big Eddy has been compared to the geology of Rodgers Cave in the neighboring Pomme de Terre Valley. Big Eddy has thus been divided into three distinct alluvial members; Early Rodgers, Middle Rodgers, and Late Rodgers (Lopinot et al. 1998:74-75).