IntCal09 and Marine09 Radiocarbon Age Calibration Curves, 0–50,000 Years cal BP

2009/01/01 by Paula Reimer, P J Reimer, M. G. L. Baillie +53 · 4,321 citations
Earth and Planetary Sciences · Mathematics · Social Sciences · #Archaeology #Archaeology and ancient environmental studies #Calibration #Calibration curve #Geochronology #Geography #Geology #Geology and Paleoclimatology Research #Markov chain Monte Carlo #Mathematics #Monte Carlo method #Pacific and Southeast Asian Studies #Paleontology #Physical geography #Radiocarbon dating #Statistics

paper · pdf · doi:10.1017/s0033822200034202

published in Radiocarbon 51(4), 1111-1150 (Cambridge University Press)

openalex publication_date 2009/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06

Abstract

The IntCal04 and Marine04 radiocarbon calibration curves have been updated from 12 cal kBP (cal kBP is here defined as thousands of calibrated years before AD 1950), and extended to 50 cal kBP, utilizing newly available data sets that meet the IntCal Working Group criteria for pristine corals and other carbonates and for quantification of uncertainty in both the 14 C and calendar timescales as established in 2002. No change was made to the curves from 0–12 cal kBP. The curves were constructed using a Markov chain Monte Carlo (MCMC) implementation of the random walk model used for IntCal04 and Marine04. The new curves were ratified at the 20th International Radiocarbon Conference in June 2009 and are available in the Supplemental Material at www.radiocarbon.org .

Citations

• Modeling Atmospheric 14C Influences and 14C Ages of Marine Samples to 10,000 BC
• Discussion Reporting of 14C Data

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