Hostname: page-component-76fb5796d-x4r87 Total loading time: 0 Render date: 2024-04-26T15:16:33.628Z Has data issue: false hasContentIssue false
  • English
  • Français

University of Texas at Austin Radiocarbon Dates VI

Published online by Cambridge University Press:  18 July 2016

S. Valastro Jr. ,
E. Mott Davis  and
Craig T. Rightmire
S. Valastro Jr.
Affiliation:
Radiocarbon Laboratory, Balcones Research Center, The University of Texas at Austin
E. Mott Davis
Affiliation:
Radiocarbon Laboratory, Balcones Research Center, The University of Texas at Austin
Craig T. Rightmire
Affiliation:
Radiocarbon Laboratory, Balcones Research Center, The University of Texas at Austin
Rights & Permissions [Opens in a new window]

Extract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

This laboratory is now a part of the Bureau of Economic Geology, The University of Texas at Austin. The present list reports C14 measurements made in dating projects completed in the year ending November, 1967, and some measurements for projects still in progress. Age calculations are based on C14 half-life of 5568 yr and a modern standard of 95% of NBS oxalic acid. The deviations reported are based on the counting statistics of the sample, background, and modern, and are ± 1σ except that when the sample count approaches either the modern or the background, 2σ limits are reported. The laboratory continues to use liquid scintillation counting of benzene, using Li2C2 and vanadium activated catalyst in preparation, as described in Texas IV and earlier lists. Chemical yields now average 85%.

Rightmire's caliche dating (done for an M.A. thesis in the Dept. of Geol.) is the principal project reported in this list; in addition to the research he prepared the samples in our laboratory and wrote the statements which accompany the list. Valastro is in charge of all technical operations in the laboratory, and he and Davis share the administrative responsibilities. Davis, who handles sample screening (with the aid of an Advisory Committee) and archaeological appraisal, compiled the list.

Type
Research Article
Information
Radiocarbon , Volume 10 , Issue 2 , 1968 , pp. 384 - 401
Copyright
Copyright © The American Journal of Science 

References

Date lists: Google Scholar
Michigan I Crane, , 1956 Google Scholar
Texas III Pearson, et al., 1965 Google Scholar
Texas IV Pearson, et al., 1966 Google Scholar
Texas V Valastro, et al., 1967 Google Scholar
USGS V Rubin, and Alexander, , 1960 Google Scholar
Crane, H. R., 1956, University of Michigan radiocarbon dates I: Science, v. 124, p. 664–672.Google Scholar
Fulton, R. L. and Webb, C. H., 1953, The Bellevue Mound: Texas Archeol. Soc. Bull., v. 24, p. 18–24.Google Scholar
Ingerson, Earl, and Pearson, F. J. Jr., 1964, Estimation of age and rate of motion of ground water by the carbon-14 method, in: Koyama, Tadashiro (ed.), Mazuren, Toyko, Recent researches in the fields of hydrosphere, atmosphere, and nuclear geochemistry, p. 263–283.Google Scholar
John, LeRoy Jr., 1964, The Devil's Mouth site: Dept. of Anthropol., Univ. of Texas, Archaeol. Ser. no. 6. Google Scholar
Johnson, I. W. and Franco, J. L., 1967, Un huipilli precolombino de Chilapa, Guerrero: Revista Mexicana de Estudios Antropologicos, v. 21, p. 149–189.Google Scholar
Lehmer, D. J., 1948, The Jornada Branch of the Mogollon: Univ. of Arizona Bull. no. 17.Google Scholar
Libby, W. F., 1955: Radiocarbon Dating, 2nd ed., Chicago, Ill., Univ. Chicago Press.Google Scholar
Pearson, F. J. Jr., Davis, E. M., and Tamers, M. A., 1966, University of Texas radiocarbon dates IV: Radiocarbon, v. 8, p. 453–466.Google Scholar
Pearson, F. J. Jr., Davis, E. M., Tamers, M. A., and Johnstone, R. W., 1965, University of Texas radiocarbon dates III: Radiocarbon, v. 7, p. 296–314.CrossRefGoogle Scholar
Rubin, Meyer and Alexander, Corrinne, 1960, U. S. Geological Survey radiocarbon dates V: Am. Jour. Sci. Radiocarbon Suppl., v. 2, p. 129–185.CrossRefGoogle Scholar
Valastro, S. Jr., Pearson, F. J., and Davis, E. M., 1967, University of Texas Radiocarbon Dates V: Radiocarbon, v. 9, p. 439–453.Google Scholar
Webb, C. H., 1959, The Belcher Mound: Soc. Am. Archaeol., Mem., no. 16.CrossRefGoogle Scholar
Williams, Howel, 1942, The geology of Crater Lake National Park, Oregon: Carnegie Inst. Washington Pub. 540, p. 162.Google Scholar