Intercomparison of high precision C-14 measurements at the University of Arizona and the Queens University of Belfast radiocarbon laboratories

R. Kalin, F.G. McCormac, P.E. Damon, C.J. Eastoe, A. Long

Research output: Contribution to journalArticlepeer-review


High-precision measurements were completed concurrently at the University of Arizona and the Queen's University of Belfast on blind samples of Irish oak originally measured for the 1986 radiocarbon calibration curve. Subsequent single-year Sequoindendron results were decadally averaged and compared with published results on decadal Douglas-fir samples. The results of these intercomparisons show that the Arizona high-precision results compare favorably with published values from the University of Washington, but show a systematic offset with published Belfast data.
Original languageEnglish
Pages (from-to)33-38
Number of pages5
Issue number1
Publication statusPublished - 1995


  • quality assurance protocol
  • AD 1950-500 BC
  • time scale
  • dating laboratories
  • decadal calibration

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