University of Pennsylvania Radiocarbon Dates XI
- 1 January 1969
- journal article
- research article
- Published by Cambridge University Press (CUP) in Radiocarbon
- Vol. 11 (01) , 150-162
- https://doi.org/10.1017/s003382220006450x
Abstract
This date list includes those series of samples completed in this laboratory as of August 1968. The B.P. ages are based upon A.D. 1950, and are calculated with a half-life value of 5568 yr. All samples were counted at least twice for periods of not less than 1000 min each. Errors quoted are derived from measurement of sample, background, and modern age calibration, but do not include any half-life error. All samples were pretreated with 3N HC1, and some, where noted, were given additional pretreatment with 2% NaOH for the removal of possible humic contaminants.Keywords
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