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Accelerator mass spectrometry radiocarbon ages of amino acid extracts from Californian palaeoindian skeletons

Nature volume 312, pages 442–444 (1984)Cite this article

Abstract

A decade ago, aspartic acid racemization ages were determined for some skeletal remains found in California, near La Jolla, Del Mar and Sunnyvale, suggesting that people were present in North America during the Upper Pleistocene1,2. These ages were obtained from the aspartic acid racemization rate, which was calibrated using a radiocarbon date of 17,150 ± 1,470 yr BP determined for a skeleton found in Laguna Beach, California3,4. These studies generated an intense controversy not only about the antiquity of human beings in the New World5,6 but also about the validity of racemization-based ages6–9, and prompted efforts to date the finds by other means6,7,10,11. Here we have used accelerator mass spectrometry (AMS) to determine the radiocarbon ages of the amino acid extracts used in the original racemization studies. Our studies indicate that some of the controversial Californian skeletons, which had been assigned to the Upper Pleistocene, are in fact Holocene.

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References

  1. Bada, J. L., Schroeder, R. A. & Carter, G. Science 184, 791–793 (1974).

    Article  ADS  CAS  Google Scholar 

  2. Bada, J. L. & Helfman, P. M. World Archaeol. 7, 160–173 (1975).

    Article  CAS  Google Scholar 

  3. Berger, R. & Libby, W. F. Radiocarbon 11, 194–209 (1969).

    Article  Google Scholar 

  4. Berger, R. et al. Contr. Univ. Calif. Archaeol. Facility (Berkeley) 12, 43–49 (1971).

    Google Scholar 

  5. Gerow, B. A. Soc. Calif. Archaeol. occ. Pap. Meth. Theory 3, 1–12 (1981).

    Google Scholar 

  6. Taylor, R. E. & Payen, L. A. in Advances in Archaeological Method and Theory Vol. 2 (ed. Schiffer, M.) 239–283 (Academic, New York, 1979).

    Google Scholar 

  7. Taylor, R. E. Radiocarbon 25, 647–654 (1983).

    Article  Google Scholar 

  8. Hare, P. E. Yb. Carnegie Inst. Wash. 73, 576–581 (1974).

    Google Scholar 

  9. Bender, M. L. Nature 252, 378–379 (1974).

    Article  ADS  CAS  Google Scholar 

  10. Donahue, D. J., Zabel, T. H., Jull, A. J. T. & Damon, P. E. Radiocarbon 25, 719–728 (1983).

    Article  Google Scholar 

  11. Bischoff, J. L. & Rosenbauer, R. J. Science 213, 1003–1005 (1981).

    Article  ADS  CAS  Google Scholar 

  12. Haynes, Jr., C. V. Abstr. sixth biennial Meeting Am. Quat. Ass. (Edmonton, Alberta) 129–132 (1978).

    Google Scholar 

  13. Martin, P. S. Science 179, 969–974 (1973).

    Article  ADS  CAS  Google Scholar 

  14. Dillehay, T. D. et al. J. Field Archaeol. 9, 547–550 (1982).

    Google Scholar 

  15. Cardich, A. in Early Man in America: From a Circum-Pacific Perspective (ed. Bryan, A. L.) 296–302 (Archaeological Researches International, Edmonton, 1978).

    Google Scholar 

  16. Gillespie, R., Gowlett, J. A. J., Hall, E. T. & Hedges, R. E. M. Archaeometry 26, 15–20 (1984).

    Article  CAS  Google Scholar 

  17. Lynch, T. F. in Ancient South Americans (ed. Jennings, J. D.) 87–137 (Freeman, San Francisco, 1983).

    Google Scholar 

  18. Stanford, D. R. Smithsonian Contr. Anthrop. 30, 202–218 (1982).

    Google Scholar 

  19. Bada, J. L. et al. in Radiocarbon Dating (eds Berger, R. &. Suess, H.) 740–756 (University of California Press, Los Angeles and Berkeley, 1979).

    Google Scholar 

  20. Bada, J. L. A. Rev. Earth planet. Sci. 13 (in the press).

  21. Wand, J. O., Gillespie, R. & Hedges, R. E. M. J. archaeol. Sci. 11, 159–163 (1984).

    Article  Google Scholar 

  22. Gillespie, R., Hedges, R. E. M. & Wand, J. O. J. Archaeol. Sci. 11, 165–170 (1984).

    Article  Google Scholar 

  23. Taylor, R. E. et al. Science 110, 1271–1273 (1983).

    Article  ADS  Google Scholar 

  24. Belluomini, G. Archaeometry 23, 125–137 (1981).

    Article  CAS  Google Scholar 

  25. Matsu'ura, S. & Ueta, N. Nature 286, 883–884 (1980).

    Article  ADS  CAS  Google Scholar 

  26. van Kleef, F. S. M., de Jong, W. W. & Hoenders, H. J. Nature 258, 264–266 (1975).

    Article  ADS  CAS  Google Scholar 

  27. Steinberg, S. M. & Bada, J. L. J. Org. Chem. 48, 2295–2298 (1983).

    Article  CAS  Google Scholar 

  28. Bada, J. L. in Chemistry and Biochemistry of the Amino Acids (ed. Barrett, G. C.) 399–414 (Chapman and Hall, London, 1984).

    Google Scholar 

  29. Kessels, H. J. & Dungworth, G. in Biogeochemistry of the Amino Acids (eds Hare, P. E., Hoering, T. C. & King, K.) 527–541 (Wiley, New York and Toronto, 1980).

    Google Scholar 

  30. Kriausakul, N. & Mitterer, R. M. in Biogeochemistry of the Amino Acids (eds Hare, P. E., Hoering, T. C. & King, K.) 283–296 (Wiley, New York and Toronto, 1980).

    Google Scholar 

  31. Bada, J. L. & Finkel, R. in Quaternary Coastlines and Marine Archaeology (eds Masters, P. M. & Flemming, N. C.) 463–467 (Academic, New York and London, 1983).

    Google Scholar 

  32. Ike, D. et al. Am. Antiquity 44, 524–530 (1979).

    Article  Google Scholar 

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Author information

Authors and Affiliations

  1. Amino Acid Dating Laboratory (A-012B), Scripps Institution of Oceanography, University of California at San Diego, La Jolla, California, 92093, USA

    J. L. Bada

  2. Oxford Radiocarbon Accelerator Unit, Research Laboratory for Archaeology and the History of Art, Oxford University, 6 Keble Road, Oxford, OX1 3QJ, UK

    R. Gillespie, J. A. J. Gowlett & R. E. M. Hedges

Authors
  1. J. L. Bada
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  2. R. Gillespie
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  3. J. A. J. Gowlett
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  4. R. E. M. Hedges
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Bada, J., Gillespie, R., Gowlett, J. et al. Accelerator mass spectrometry radiocarbon ages of amino acid extracts from Californian palaeoindian skeletons. Nature 312, 442–444 (1984). https://doi.org/10.1038/312442a0

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