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Arizona Radiocarbon Dates Ix: Carbon Isotope Dating of Packrat Middens

Published online by Cambridge University Press:  18 July 2016

Jim I Mead ,
Robert S Thompson  and
Austin Long
Jim I Mead
Affiliation:
Department of Geosciences, University of Arizona Tucson, Arizona 85721
Robert S Thompson
Affiliation:
Department of Geosciences, University of Arizona Tucson, Arizona 85721
Austin Long
Affiliation:
Department of Geosciences, University of Arizona Tucson, Arizona 85721
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The carbon isotope analyses reported here include all radiocarbon dates run on packrat middens in the United States and Mexico by the Arizona radiocarbon laboratory through October 1977. All samples described below report dates by CO2 (0.5 or 2.0L) counting. Age calculations are based on a 14C half-life of 5568 years, using 0.949 NBS oxalic acid as the modern value. Errors, based on counting statistics, are quoted to ± 1δ; infinite ages quoted to — 2δ.

Type
Date Lists
Information
Radiocarbon , Volume 20 , Issue 2 , 1978 , pp. 171 - 191
Copyright
Copyright © The American Journal of Science 

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