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Southern Methodist University Radiocarbon Date List II

Published online by Cambridge University Press:  18 July 2016

Herbert Haas  and
Vance Haynes
Herbert Haas
Affiliation:
Institute for the Study of Earth and Man, Southern Methodist University, Dallas, Texas 75275
Vance Haynes
Affiliation:
Department of Anthropology, University of Arizona, Tucson, Arizona 85721
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All samples described in this date list have been dated from November 1973 to January 1975. Only the benzene liquid scintillation installation was used during this time. For the combustion of soil and fossil bone samples containing a high content of sulfur (ie, in the form of pyrite), a new CO2 extraction and cleaning system was built. The gases released by the combustion are dried in ice and dry ice traps, passed through hot copper oxide and bubbled through KOH solution. Following the combustion, the K2CO3 precipitate is acidified in the same vessel where it formed and the released CO2 is again dried in a dry ice trap and by passing it through ascarite. This CO2 gas is quite clean and can be brought to the original system where the gas volume is measured. Further processing is as previously described (Haynes and Haas, 1974).

Type
Research Article
Information
Radiocarbon , Volume 17 , Issue 3 , 1975 , pp. 354 - 363
Copyright
Copyright © The American Journal of Science 

References

Haynes, C V and Haas, Herbert, 1974, Southern Methodist University radiocarbon date list I: Radiocarbon, v 16, p 368–380.CrossRefGoogle Scholar
Rainey, M, 1974, The Quaternary stratigraphy of the North Sulphur River: , Southern Methodist Univ, Dallas, Texas, 28 P.Google Scholar
Slaughter, B H and Hoover, B R, 1963, Sulphur River formation and the Pleistocene mammals of the Ben Franklin local fauna: Graduate Research Center Tour, v 31, p 132–148.Google Scholar
Valastro, S Jr, Davis, E M, and Varela, A G, 1975, University of Texas at Austin radiocarbon dates X, Radiocarbon, v 17, p 52–98.CrossRefGoogle Scholar