Radiocarbon Equations

Provides functions for the calibration of radiocarbon dates, as well as options to calculate different radiocarbon-related timescales (cal BP, cal BC/AD, C14 age, F14C, pMC, D14C) and estimating the effects of contamination or local reservoir offsets (Reimer and Reimer 2001 ). Supporting publication: Blaauw, M., Reimer, P.J., 2026. An open-source toolkit for radiocarbon dating and calibration. Radiocarbon . The methods follow long-established recommendations such as Stuiver and Polach (1977) and Reimer et al. (2004) . This package uses the calibration curves from the data package 'rintcal'.

rice

Radiocarbon Calibration Equations

Radiocarbon is widely used for dating a range of archaeological and geographical objects. This package provides a number of functions to calibrate radiocarbon dates, including ones to transfer values between different timescales (F14, D14C, pMC, C14 ages), to simulate the impacts of contamination, and to plot one or more calibrated dates.

Please check out the vignettes folder for a tutorial. In short, install the package from github, load it and run the two main functions:

require(remotes)
install_github("Maarten14C/rice")
library(rice)
calibrate(2450,20)
contaminate(55000, 100, .05, 1)
draw.contamination()

Installation

To use high-resolution maps, install the rnaturalearthhires package from GitHub (see https://github.com/ropensci/rnaturalearthhires).