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US Geological Survey, Denver, Colorado Radiocarbon Dates II*

Published online by Cambridge University Press:  18 July 2016

L J Schroder ,
R L Emerson  and
W A Beetem
L J Schroder
Affiliation:
US Geological Survey, Denver Federal Center, 407, Denver, Colorado 80225
R L Emerson
Affiliation:
US Geological Survey, Denver Federal Center, 407, Denver, Colorado 80225
W A Beetem
Affiliation:
US Geological Survey, Denver Federal Center, 407, Denver, Colorado 80225
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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.

Type
Date Lists
Information
Radiocarbon , Volume 20 , Issue 2 , 1978 , pp. 200 - 209
Copyright
Copyright © The American Journal of Science 

References

Brown, Eugene, Skougstad, M W, and Fishman, M J, 1970, Techniques of water-resources investigations of the United States Geological Survey, Bk 5, p 42–44.Google Scholar
Buckley, J D and Willis, E H, 1969, Isotopes radiocarbon measurements VII: Radiocarbon, v 11, p 53–105.Google Scholar
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 133–149.Google Scholar
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 469–478.Google Scholar