Porvenir is one of several Late Archaic sites investigated by Jonathan Haas, Winifred Creamer and their team in the Pativilca and Fortaleza Valleys in the Norte Chico Region of north-central coastal Peru (Haas et al. 2013). This site had evidence of maize pollen recovered from soil samples, one of which had an associated radiocarbon date.
| ID | Other ID | Type | Subtype | Uncal BP (years) | ± 1 σ (years) | Median cal BP (years) | Lower cal BP (years) | Upper cal BP (years) | δ13C | Contaminated? |
|---|---|---|---|---|---|---|---|---|---|---|
| 682 | Beta-199060 | MicroSample | pollen | 4250 | 40 | 4732 | 4855 | 4584 | No |