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 | Otro ID | Tipo | Subtipo | Promedio de la Fecha de Radiocarbono | Desviación Estándar (años) | Fecha Calibrada Media | Fecha Calibrada Menor | Fecha Calibrada Superior | δ13C | Contaminada? |
|---|---|---|---|---|---|---|---|---|---|---|
| 682 | Beta-199060 | MicroSample | polen | 4250 | 40 | 4732 | 4855 | 4584 | No |