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Conventions for Reporting Radiocarbon Determinations

  • Andrew R Millard (a1)

Current conventions for reporting radiocarbon determinations do not cover the reporting of calibrated dates. This article proposes revised conventions that have been endorsed by many 14C scientists. For every determination included in a scientific paper, the following should apply: (1) the laboratory measurement should be reported as a conventional radiocarbon age in 14C yr BP or a fractionation-corrected fraction modern (F14C) value; (2) the laboratory code for the determination should be included; and (3) the sample material dated, the pretreatment method applied, and quality control measurements should be reported. In addition, for every calibrated determination or modeled date, the following should be reported: (4) the calibration curve and any reservoir offset used; (5) the software used for calibration, including version number, the options and/or models used, and wherever possible a citation of a published description of the software; and (6) the calibrated date given as a range (or ranges) with an associated probability on a clearly identifiable calendar timescale.

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Blaauw M. 2010. Methods and code for ‘classical’ age-modelling of radiocarbon sequences. Quaternary Geochronology 5(5):512–8.
Blaauw M, Christen JA. 2005. Radiocarbon peat chronologies and environmental change. Journal of the Royal Statistical Society Series C-Applied Statistics 54(4):805–16.
Blaauw M, Christen JA. 2011. Flexible paleoclimate age-depth models using an autoregressive gamma process. Bayesian Analysis 6(3):457–74.
Bronk Ramsey C. 2009. Bayesian analysis of radiocarbon dates. Radiocarbon 51(4):337–60.
Buck CE, Christen JA, James GN. 1999. BCal: an online Bayesian radiocarbon calibration tool. Internet Archaeology 7:
Fairbanks RG, Mortlock RA, Chiu TC, Cao L, Kaplan A, Guilderson TP, Fairbanks TW, Bloom AL, Grootes PM, Nadeau MJ. 2005. Radiocarbon calibration curve spanning 0 to 50,000 years BP based on paired 230Th/234U/238U and 14C dates on pristine corals. Quaternary Science Reviews 24(16–17):1781–96.
Flint R, Deevey ES. 1961. Editorial statement. Radiocarbon 3:iii.
Flint R, Deevey ES. 1962. Editorial statement. Radiocarbon 4:iii.
Haslett J, Parnell A. 2008. A simple monotone process with application to radiocarbon-dated depth chronologies. Journal of the Royal Statistical Society Series C-Applied Statistics 57(4):399418.
Klein J, Lerman JC, Damon PE, Timothy L. 1980. Radiocarbon concentration in the atmosphere; 8000-year record of variations in tree rings; first results of a USA workshop. Radiocarbon 22(3):950–61.
Klein J, Lerman JC, Damon PE, Ralph EK. 1982. Calibration of radiocarbon dates: tables based on the consensus data of the Workshop on Calibrating the Radiocarbon Time Scale. Radiocarbon 24(2):103–50.
Libby WF, Anderson EC, Arnold JR. 1949. Age determination by radiocarbon content: world wide assay of natural radiocarbon. Science 109(2827):227–8.
Long A. 1995. From the editor. Radiocarbon 37(1):iiiiv.
Mook W. 1986. Business meeting: recommendations/resolutions adopted by the Twelfth International Radiocarbon Conference. Radiocarbon 28(2A):799.
Mook W, van der Plicht J. 1999. Reporting 14C activities and concentrations. Radiocarbon 41(3):227–39.
Mook WG, Waterbolk HT. 1985. Radiocarbon Dating. Strasbourg: European Science Foundation.
Nadeau M-J, Grootes PM. 2013. Calculation of the compounded uncertainty of 14C AMS measurements. Nuclear Instruments and Methods in Physics Research B 294:420–5.
Olsson IU. 1970. The use of oxalic acid as a standard. In: Olsson IU, editor. Radiocarbon Variations and Absolute Chronology. New York: John Wiley & Sons. p 17.
Reimer PJ, Brown TA, Reimer RW. 2004. Discussion: reporting and calibration of post-bomb 14C data. Radiocarbon 46(3):1299–304.
Reimer PJ, Baillie MGL, Bard E, Bayliss A, Beck JW, Blackwell PG, Bronk Ramsey C, Buck CE, Burr GS, Edwards RL, Friedrich M, Grootes PM, Guilderson TP, Hajdas I, Heaton TJ, Hogg AG, Hughen KA, Kaiser KF, Kromer B, McCormac FG, Manning SW, Reimer RW, Richards DA, Southon JR, Talamo S, Turney CSM, van der Plicht J, Weyhenmeyer CE. 2009. IntCal09 and Marine09 radiocarbon age calibration curves, 0–50,000 years cal BP. Radiocarbon 51(4):1111–50.
Reimer PJ, Bard E, Bayliss A, Beck JW, Blackwell PG, Bronk Ramsey C, Buck CE, Cheng H, Edwards RL, Friedrich M, Grootes PM, Guilderson TP, Haflidason H, Hajdas I, Hatté C, Heaton TJ, Hoffmann DL, Hogg AG, Hughen KA, Kaiser KF, Kromer B, Manning SW, Niu M, Reimer RW, Richards DA, Scott EM, Southon JR, Staff RA, Turney CSM, van der Plicht J. 2013. IntCal13 and Marine13 radiocarbon age calibration curves 0–50,000 years cal BP. Radiocarbon 55(4):1869–87.
Royal Society. 1974. General Notes on the Preparation of Scientific Papers. London: Royal Society.
Stuiver M. 1980. Workshop on 14C data reporting. Radiocarbon 22(3):964–6.
Stuiver M. 1983. Business meeting: international agreements and the use of the new oxalic acid standard. Radiocarbon 25(2):793–5.
Stuiver M, Polach HA. 1977. Discussion: reporting of 14C data. Radiocarbon 19(3):355–63.
Stuiver M, Reimer PJ. 1993. Extended 14C data base and revised CALIB 3.0 14C age calibration program. Radiocarbon 35(1):215–30.
Stuiver M, Reimer PJ, Bard E, Beck JW, Burr GS, Hughen KA, Kromer B, McCormac G, van der Plicht J, Spurk M. 1998. INTCAL98 radiocarbon age calibration, 24,000–0 BR Radiocarbon 40(3):1041–83.
Svensson A, Andersen KK, Bigler M, Clausen HB, Dahl-Jensen D, Davies SM, Johnsen SJ, Muscheler R, Rasmussen SO, Rothlisberger R, Steffensen JP, Vintner BM. 2006. The Greenland Ice Core Chronology 2005, 15–42 ka. Part 2: comparison to other records. Quaternary Science Reviews 25(23–24):3258–67.
Weninger B, Jöris O. 2008. A 14C age calibration curve for the last 60 ka: the Greenland-Hulu U/Th timescale and its impact on understanding the Middle to Upper Paleolithic transition in Western Eurasia. Journal of Human Evolution 55(5):772–81.
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