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US Geological Survey, Denver, Colorado Radiocarbon Dates II *

  • L J Schroder (a1), R L Emerson (a1) and W A Beetem (a1)

Extract

This list includes all measurements made between 1969 and 1973 that represent natural samples. Physical and chemical treatment of samples and counting technique remain as previously reported (R, 1973, v 15, p 469-478). Calculations of dates are made with the radiocarbon half-life of 5568 ± 30 years; plus or minus numbers quoted herein are the standard errors for the counting of radioactive disintegrations.

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References

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Brown, Eugene, Skougstad, M W, and Fishman, M J, 1970, Techniques of water-resources investigations of the United States Geological Survey, Bk 5, p 4244.
Buckley, J D and Willis, E H, 1969, Isotopes radiocarbon measurements VII: Radiocarbon, v 11, p 53105.
Craig, Harmon, 1957, Isotopic standards for carbon and oxygen and factors for mass-spectrometric analysis of carbon dioxide: Geochim et Cosmochim Acta, v 12, p 133149.
Schroder, L J, Beetem, W A, Claassen, H C, and Emerson, R L, 1973, US Geological Survey, Denver, Colorado radiocarbon dates I: Radiocarbon, v 15, p 469478.

US Geological Survey, Denver, Colorado Radiocarbon Dates II *

  • L J Schroder (a1), R L Emerson (a1) and W A Beetem (a1)

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