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Science 28 August 1981:
Vol. 213. no. 4511, pp. 1003 - 1005
DOI: 10.1126/science.213.4511.1003
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Articles

Uranium Series Dating of Human Skeletal Remains from the Del Mar and Sunnyvale Sites, California

JAMES L. BISCHOFF 1 and ROBERT J. ROSENBAUER 1

1 U.S. Geological Survey, Menlo Park, California 94025

Uranium series analyses of human bone samples from the Del Mar and Sunnyvale sites indicate ages of 11,000 and 8,300 years, respectively. The dates are supported by internal concordancy between thorium-230 and protactinium-231 decay systems. These ages are significantly younger than the estimates of 48,000 and 70,000 years based on amino acid racemization, and indicate that the individuals could derive from the population waves that came across the Bering Strait during the last sea-level low.

Submitted on February 3, 1981
Revised on April 13, 1981


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Middle Holocene Age of the Sunnyvale Human Skeleton.
R. E. Taylor, R. E. TAYLOR, L. A. PAYEN, B. GEROW, D. J. DONAHUE, T. H. ZABEL, A. J. T. JULL, and P. E. DAMON (1983)
Science 220, 1271-1273
   Abstract »    PDF »
Uranium Series Ages of the Del Mar Man and Sunnyvale Skeletons.
J. L. Bada, J. L. BADA, and R. FINKEL (1982)
Science 217, 755
   PDF »
Uranium Series Ages of the Del Mar Man and Sunnyvale Skeletons.
J. L. BISCHOFF and R. J. ROSENBAUER (1982)
Science 217, 756
   PDF »


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Science. ISSN 0036-8075 (print), 1095-9203 (online)