Uranium Series Dating of Human Skeletal Remains from the Del Mar and Sunnyvale Sites, California
- 28 August 1981
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 213 (4511) , 1003-1005
- https://doi.org/10.1126/science.213.4511.1003
Abstract
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.This publication has 11 references indexed in Scilit:
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