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Cited by 9Archaeology and ancient environmental studiesGeology and Paleoclimatology ResearchRadioactive Decay and Measurement Techniques

Washington State University Natural Radiocarbon Measurements II

Open access
Sheppard, J C, Chatters, R M·1976·Radiocarbon
DOI 10.1017/s0033822200002435
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Abstract

This list of radiocarbon age measurements is for the period 1972–1974. Most of the samples are of archaeologic interest. The pretreatments of samples used are basically those described by Ralph and Michael (1971). All samples were converted to methane using the method developed by Fairhall, Schell, and Takashima (1961) and counted in .5L counting tubes at 2 to 4atm of pressure. The WSU Radiocarbon Laboratory has been relocated to the basement of Dana Hall (three stories) and additional shielding has been added. The backgrounds of the counting tubes are .90 counts/min and have an atmospheric pressure dependence of –.035 counts/min/cm Hg.

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  • The range of pMC values for ten saber tooth tigers from La Brea Tar Pits, pretreated to remove tar, is 9.4 to 3.1, or 12,000 to 28,000 years.

    “The range of pMC's for ten saber tooth tigers from La Brea Tar Pits, pretreated to remove tar, is 9.4 to 3.1 (12,000 to 28,000 year range) [14].”

    From The Search for Solutions to Mysterious Anomalies in the Geologic Column (2019) · cites this paper as [14]

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Authors
Sheppard, J. C., & Chatters, R. M.
Affiliations
Washington State University (US)
Venue
Radiocarbon
Publisher
Cambridge University Press (CUP)
Published
1976
Volume
18
Issue
1
Pages
140-149
ISSN
  • 0033-8222 (ISSN-L)
  • 1945-5755
DOI
10.1017/s0033822200002435
OpenAlex
W2557574639
Cited by
9
References
0
Citations by year
2024: 1 · 2019: 2
FWCI
0.00
Type
journal article
Language
en
Open access
Licence
www.cambridge.org/core/terms (unspecified, 14809 d)
Locations
  • Radiocarbon (publishedVersion)
  • UA Campus Repository (The University of Arizona) (acceptedVersion)
Topics
  • Physical Sciences › Earth and Planetary Sciences › Paleontology › Archaeology and ancient environmental studies
  • Physical Sciences › Earth and Planetary Sciences › Atmospheric Science › Geology and Paleoclimatology Research
  • Physical Sciences › Physics and Astronomy › Radiation › Radioactive Decay and Measurement Techniques
Keywords
radiocarbon dating, archaeological samples, natural radiocarbon, methane conversion, pressure dependence, sample preparation

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