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Uranium-Thorium Dating/Evidence
Method evidence record

Uranium-Thorium Dating

Uranium-thorium (U-Th) dating is a chronometric method that determines the age of carbonates, shells, bones, and coral by measuring the ratio of uranium isotopes to thorium-230. First applied by Harmon Craig in the 1950s, it exploits the natural radioactive decay chain of uranium. U-Th dating is particularly valuable for dating materials from 500 to 500,000 years old, filling a crucial chronological gap between radiocarbon and potassium-argon dating.

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Source record

Citations copied verbatim from the method’s source record. No claim-level verification is inferred from them.

Uranium-Thorium Dating (U-Th)
Taxonomic method record · process-pipeline / archaeology
  • Edwards, R. L., Chen, J. H., & Wasserburg, G. J. (1987). U-238, U-234 and Th-230 in seawater. Geochimica et Cosmochimica Acta, 51(5), 1213-1225. · URL
  • Cheng, H., Edwards, R. L., Hoff, J., Gallup, C. D., Richards, D. A., & Asmerom, Y. (2000). The half-lives of uranium-234 and thorium-230. Chemical Geology, 169(1-2), 17-33. · DOI 10.1016/S0009-2541(99)00157-6
  • Pike, A. W. G., Hedges, R. E. M., & van Calsteren, P. (2007). The radioactive decay of uranium-234. Quaternary Geochronology, 2(1-4), 118-124. · URL
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Related methods

Generated from the method graph and shown as machine-suggested relations — no evidence claim is inferred.

Same method familyArchaeomagnetic Datingmachine-suggested · Relational suggestion, not evidence.Taxonomic bucketElectron Spin Resonance Datingmachine-suggested · Relational suggestion, not evidence.Taxonomic bucketOptically Stimulated Luminescence Datingmachine-suggested · Relational suggestion, not evidence.Taxonomic bucketThermoluminescence Datingmachine-suggested · Relational suggestion, not evidence.

Evidence status

Sources recorded, not reviewed

Bibliographic sources are present. Claim-level evidence review has not been performed.

Sources

3 recorded citations, copied from the method source record.

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