Table 1.

Radiocarbon dates on maize remains and wood charcoal from floors and features in excavated units at Paredones and Huaca Prieta

Sample no.Provenienceδ13CConventional radiocarbon (yrs BP)1σ-Calibrated age range (BP)2σ-Calibrated age range (BP)Material
Unit 3 (Huaca Prieta)
 AA76977Unit 3, floor 2−22.83530 ± 363827–36933849–3636Wood charcoal
 Beta233649Unit 3, floor 3−10.21090 ± 40973–9111052–809Corn cob
 AA76978Unit 3, floor 5a−19.63567 ± 403841–37173901–3643Wood charcoal
 AA76979Unit 3, floor 5b−19.63758 ± 404142–39784216–3901Wood charcoal
 Beta247695Unit 3, stratum 8, below floor 6−20.84000 ± 404510–42964520–4245Organic sediment
Unit 16
 Beta263319Unit 16, floor 3−11.7830 ± 40728–678767–664Corn cob
 AA86935Off-mound domestic unit 16, floor 13−22.66310 ± 337251–71627266–7021Wood charcoal
Unit 20 (Paredones)
 AA86938Unit 20, stratum 5–6−11.21130 ± 271051–9361055–831Corn cob
 AA86936Unit 20, stratum 5b−23.84783 ± 315578–53305583–5324Wood charcoal
 Beta263322Unit 20, stratum 6a−9.31310 ± 401268–11431279–1076Corn cob
 AA86932Unit 20, stratum 6b-18−23.54770 ± 355577–53215582–5321Husk fragment
 AA86937Unit 20, stratum 6b-18−25.84849 ± 315589–54795603–5333Charred wood
Unit 15/21 (Huaca Prieta)
 AA86941Unit 21, floor 2-3-16−10.63599 ± 293889–37283956–3704Charred corn cob
 AA86931Unit 21, floor 3-2−25.23638 ± 293957–38383982–3728Wood charcoal
 AA86946Unit 21, floor 9−11.93783 ± 414148–39884235–3928Charred corn cob
 AA75322Unit 21, floor 26−29.45018 ± 865860–55995911–5488Wood charcoal
 AA85507Unit 15, first mound layer−25.66522 ± 547429–73237474–7268Wood charcoal
Unit 22 (Paredones)
 AA86934Unit 22, floor 6−13.44181 ± 344809–45704821–4527Charred corn cob
 Beta263988Unit 22, floor 10105.4 ± 5132–44133–34Corn cob
 Beta263320Unit 22, floor 10, capa 14−24.54590 ± 405308–50625435–5044Charred material
 Beta263321Unit 22, floor 15−25.64790 ± 405580–53315585–5325Charred material
 AA86947Unit 22, floor 16, fill 10−24.04898 ± 495644–54835711–5335Wood charcoal
 AA88761*Unit 22, floor 18-3−30.71.0751 ± 0.0047  (postbomb)Corn cob
 Beta27823*Unit 22, floor 18-3−9.8750 ± 40679–571722–563Corn cob
 Beta27804*Unit 22, floor 18-3−9.0770 ± 40720–578729–569Corn cob
 Beta282127*Unit 22, floor 18-3−9.2790 ± 40721–662738–572Corn cob
 OS86020*Unit 22, floor 18-3−10.35900 ± 406734–65696775–6504Husk and shank
 AA83260Unit 22, floor 24−26.05750 ± 606561–64056640–6319Wood charcoal
Bird's HP-3 (Huaca Prieta)
 AA81926HP-3, stratum 5−28.03394 ± 403634–34853688–3464Wood charcoal
 AA86943HP-3, stratum 14−24.63806 ± 284213–39994233–3985Wood charcoal
 AA86940HP-3, stratum 19−25.63875 ± 304287–41044406–4090Wood charcoal
 AA81924HP-3, stratum 22−23.53687 ± 404063–38764084–3838Wood charcoal
 AA81927HP-3, stratum 23−17.33728 ± 404084–39274147–3875Wood charcoal
 Beta278050HP-3, stratum 28(33)−14.93740 ± 404087–39314149–3839Charred corn cob
 AA82121HP-3, upper stratum 52 (39)5980 ± 406789–66766882–6657Cotton yarn
 AA81907First mound layer: lower stratum 52–53−23.86170 ± 457154–68997162–6808Wood charcoal
  • *Dates processed on same integrated cob/shank/husk from floor 18.

  • Aberrant δ13C assay. All dates in Table 1 were calibrated using shcal04 (25).