Multi-method geoarchaeological analyses demonstrates exceptionally rapid construction of Ridge West 3 at Poverty Point

A re-excavation and multi-method geoarchaeological analysis of Ridge West 3 (RW3) at Poverty Point reveals that the monumental earthwork was constructed exceptionally rapidly. The study, using techniques such as micromorphology, magnetic susceptibility measurements, and sequential loss-on-ignition, along with new radiocarbon dates, demonstrates that RW3 was built in layers of mixed natural and anthropogenically enriched sediments, with surfaces briefly utilized during construction. The ridge's top is buried 10 to 30 cm below the modern surface, indicating a swift construction process. Radiocarbon dating suggests the construction occurred between 3450–2975 cal BP, with the final phase completed by 3355–3210 cal BP. This research highlights the potential for further vital investigations at Poverty Point while minimizing impact on archaeological deposits.

Kidder, T. R., Kai, S., Henry, E. R., Grooms, S. B., & Ervin, K. (2021). Multi-method geoarchaeological analyses demonstrates exceptionally rapid construction of Ridge West 3 at Poverty Point. Southeastern Archaeology, 40(3), 212–227. https://doi.org/10.1080/0734578x.2021.1958445