pMC.age {rintcal}

Calculate C14 ages from pMC values.

Description

Calculate C14 ages from pMC values of radiocarbon dates.

Usage

pMC.age(mn, sdev = c(), ratio = 100, decimals = 0, lambda = 8033)

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.

lambda

The mean-life of radiocarbon (based on Libby half-life of 5568 years)

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.

Value

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

Examples

  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, ratio=1) # throws a warning, use F14C.age instead