The Marine20 calibration curve

Source: R/bd_data.R

A tibble containing the Marine20 marine radiocarbon calibration curve.

marine20

Format

An object of class tbl_df (inherits from tbl, data.frame) with 5500 rows and 5 columns.

Source

http://intcal.org/curves/marine20.14c

Details

marine20 is a tibble::tbl_df object with the following fields:

  • CAL BP --- The calibrated year before present

  • 14C age --- The un-calibrated 14C age of the sample, in years before present

  • Error --- The measurement error of the 14C age, in years before present

  • Delta 14C --- The normalized delta 14C (Δ14C) measurement for the sample, in per mil (‰)

  • Sigma --- The standard deviation (σ) of the Δ14C measurement, in per mil (‰)

References

Heaton, T. J., Köhler, P., Butzin, M., Bard, E., Reimer, R. W., Austin, W. E. N., Bronk Ramsey, C., Grootes, P. M., Hughen, K. A., Kromer, B., Reimer, P. J., Adkins, J., Burke, A., Cook, M. S., Olsen, J. and Skinner, L. C. (2020) “MARINE20—THE MARINE RADIOCARBON AGE CALIBRATION CURVE (0–55,000 CAL BP),” Radiocarbon. Cambridge University Press, pp. 1–42. DOI: 10.1017/RDC.2020.68