F14CtoC14: Calculate C14 ages from F14C values.

In rice: Radiocarbon Equations

Calculate C14 ages from F14C values.

Description

Calculate C14 ages from F14C values of radiocarbon dates.

Usage

F14CtoC14(F14C, er = NULL, roundby = NA, lambda = 8033, botherrors = FALSE)

Arguments

F14C	Reported mean of the F14C
er	Reported error of the F14C. Returns just the mean if left empty.
roundby	Amount of decimals required for the output. Defaults to roundby=NA, no rounding.
lambda	The mean-life of radiocarbon (based on Libby half-life of 5568 years).
botherrors	Since going from C14 to F14C involves a logarithmic transformation (F=exp(-y/lambda)), errors that are symmetric on the C14 scale will become asymmetric on the F14C scale. By default, only the largest error is reported, but if reportbotherrors=TRUE, both errors are reported. #' @return The radiocarbon ages from the F14C values. If F14C values are above 100%, the resulting radiocarbon ages will be negative.

Details

Post-bomb dates are often reported as F14C (between 0 at c. 55 kcal BP and 1 at c. AD 1950). Since software such as Bacon expects radiocarbon ages, this function can be used to calculate radiocarbon ages from F14C values. The reverse function is age.F14C.

Examples

  F14CtoC14(1.10, 0.005) # a postbomb date, so with a negative C14 age
  F14CtoC14(.80, 0.005) # prebomb dates can also be calculated

rice documentation built on Sept. 9, 2025, 5:42 p.m.