A comparison between marine and terrestrial samples for the creation of a radiocarbon Chinchorro culture sequence at Morro de Arica, south-central Andean coast, Chile

A refined chronological sequence for the Chinchorro culture (∼7000−3000 cal BP) at Morro de Arica, Chile, has been established using radiocarbon dating of both marine and terrestrial samples. This study reveals a delta reservoir effect of up to 176±113 years, providing critical insights into the site's formation processes, including stratigraphic alterations and pottery fills. By comparing burial and domestic spaces, researchers have improved the understanding of temporal dynamics in this significant archaeological context. The findings highlight the importance of considering marine vs. terrestrial sample differences when constructing chronologies for coastal sites.

Castelleti, J., & Arriaza, B. (2025). A comparison between marine and terrestrial samples for the creation of a radiocarbon Chinchorro culture sequence at Morro de Arica, south-central Andean coast, Chile. Radiocarbon, 68(1), 32–44. https://doi.org/10.1017/rdc.2025.16