rbacon (version 2.4.2)

pMC.age: Calculate C14 ages from pMC values.

Description

Calculate C14 ages from pMC values of radiocarbon dates.

Usage

pMC.age(mn, sdev, ratio = 100, decimals = 0)

Arguments

mn

Reported mean of the pMC.

sdev

Reported error of the pMC.

ratio

Most modern-date values are reported against 100. If it is against 1 instead, use 1 here.

decimals

Amount of decimals required for the radiocarbon age.

Value

Radiocarbon ages from pMC values. If pMC values are above 100%, the resulting radiocarbon ages will be negative.

Details

Post-bomb dates are often reported as pMC or percent modern carbon. Since Bacon expects radiocarbon ages, this function can be used to calculate radiocarbon ages from pMC values. The reverse function is age.pMC.

References

Blaauw, M. and Christen, J.A., Flexible paleoclimate age-depth models using an autoregressive gamma process. Bayesian Anal. 6 (2011), no. 3, 457--474. https://projecteuclid.org/euclid.ba/1339616472

See Also

http://www.qub.ac.uk/chrono/blaauw/manualBacon_2.3.pdf

Examples

# NOT RUN {
  pMC.age(110, 0.5) # a postbomb date, so with a negative 14C age
  pMC.age(80, 0.5) # prebomb dates can also be calculated
  pMC.age(.8, 0.005, 1) # pMC expressed against 1 (not against 100\%)
# }