Radiocarbon calibration curve class

The c14_curve class represents a radiocarbon calibration curve, which estimates the calendar ages corresponding to a set of radiocarbon measurements. Usually calibration is performed with either one of the standard curves included with the package (see c14_curves) or read in from a file with read_14c().

c14_curve() constructs a a new calibration curve using values in 14C years, optionally with their associated d14C values.

c14_fcurve() constructs a curve using fraction modern values (F14C or pMC), typically used for "post-bomb" calibration.

Usage

c14_curve(
  cal_age = era::yr(),
  c14_age = numeric(),
  c14_error = numeric(),
  d14c = numeric(),
  d14c_error = numeric()
)

c14_fcurve(cal_age = era::yr(), f14c = numeric(), f14c_error = numeric())

Arguments

cal_age

Vector of calendar ages. If cal_age is an object of class era::yr, its epoch will be respected, otherwise it is assumed to be "cal BP".

c14_age

Vector of uncalibrated radiocarbon ages.

c14_error

Vector of errors (sigma values) associated with c14_age.

d14c

Vector of Delta-14C values (optional).

d14c_error

Vector of errors (sigma values) associated with d14c (optional).

f14c

Vector of fraction modern (F14C or pMC) values.

f14c_error

Vector of errors (sigma values) associated with f14c.

Value

Object of class c14_curve.

References

Stenström KE, Skog G, Georgiadou E, Genberg J, Johansson A (2011). “A guide to radiocarbon units and calculations.” Technical Report LUNFD6(NFFR-3111)/1-17/(2011), Lund University, Nuclear Physics.

See also

Other calibration curve functions: read_14c()