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University of Miami Radiocarbon Dates VI

Published online by Cambridge University Press:  18 July 2016

J J Stipp ,
K L Eldridge  and
R Cadwell
J J Stipp
Affiliation:
Department of Geology, University of Miami, Coral Gables, Florida
K L Eldridge
Affiliation:
Department of Geology, University of Miami, Coral Gables, Florida
R Cadwell
Affiliation:
Department of Geology, University of Miami, Coral Gables, Florida
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The following radiocarbon measurements are a partial list of projects and samples dated since the Spring of 1975. The technique used is liquid scintillation counting of wholly synthesized benzene as indicated in R, v 16, p 402-408. The intermediate chemical step of converting CO2 to Li2C2 has been modified so that the CO2 is reacted with the lithium metal at a temperature of 950° to 1000°C instead of the 600°C as formerly done (Tamers, 1975). This modification has had the effect of reducing occasional variable losses in conversion yields in this step, and reducing the reaction time required from 30 min to 10 min for a typical ¼ mole sample. Dates are calculated using a 14C half-life of 5568 yr and errors are reported as one standard deviation. No other correction factors are applied.

Type
Research Article
Information
Radiocarbon , Volume 18 , Issue 2 , 1976 , pp. 210 - 220
Copyright
Copyright © The American Journal of Science 

References

Eldridge, K L, Stipp, J J, and Cohen, S J, 1975, University of Miami radiocarbon dates III: Radiocarbon, v 17, p 239–246.Google Scholar
Eldridge, K L, Stipp, J J, and Hattner, J, 1975, University of Miami radiocarbon dates V: Radiocarbon, v 18, p 116–124.Google Scholar
Lawn, Barbara, 1974, University of Pennsylvania radiocarbon dates XVII: Radiocarbon, v 16, p 231.Google Scholar
Stipp, J J, Eldridge, K L, Cohen, S J, and Webber, K, 1974, University of Miami radiocarbon dates I: Radiocarbon, v 16, p 402–408.Google Scholar
Tamers, M A, 1975 Chemical yield optimization of the benzene synthesis for radiocarbon dating: Internatl Jour Appl Rad & Isotopes, v 26, p 676–682.Google Scholar