Uranium series dating of human skeletal remains from the Del Mar and Sunnyvale sites, California

Journal Article · Fri Aug 28 04:00:00 EDT 1981 · Science (Washington, D.C.); (United States)

DOI:https://doi.org/10.1126/science.213.4511.1003· OSTI ID:6043375

Bischoff, J L; Rosenbauer, R J

Uranium series analyses of human bone samples from the Del Mar and Sunnyvale sites indicate ages of 11,000 and 8300 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.

• Research Organization: Geological Survey, Menlo Park, CA
• OSTI ID: 6043375
• Journal Information: Science (Washington, D.C.); (United States), Journal Name: Science (Washington, D.C.); (United States) Vol. 213; ISSN SCIEA
• Country of Publication: United States
• Language: English

Related Subjects

510101* -- Environment
Terrestrial-- Basic Studies-- Radiometric Techniques-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIDES
AGE ESTIMATION
ALPHA DECAY RADIOISOTOPES
AMINO ACIDS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BODY
CALIFORNIA
CARBON 14
CARBON ISOTOPES
CARBOXYLIC ACIDS
COMPARATIVE EVALUATIONS
ELEMENTS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FOSSILS
HEAVY NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPE DATING
ISOTOPES
LIGHT NUCLEI
METALS
MINUTES LIVING RADIOISOTOPES
NORTH AMERICA
NUCLEI
ODD-EVEN NUCLEI
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANS
PROTACTINIUM 231
PROTACTINIUM ISOTOPES
RACEMIZATION
RADIOISOTOPES
SKELETON
THORIUM 230
THORIUM ISOTOPES
URANIUM
URANIUM 235
URANIUM 238
URANIUM ISOTOPES
USA
WESTERN REGION
YEARS LIVING RADIOISOTOPES