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Bchron (version 4.7.8)

Age-Depth Radiocarbon Modelling

Description

Enables quick calibration of radiocarbon dates under various calibration curves (including user generated ones); age-depth modelling as per the algorithm of Haslett and Parnell (2008) ; Relative sea level rate estimation incorporating time uncertainty in polynomial regression models (Parnell and Gehrels 2015) ; non-parametric phase modelling via Gaussian mixtures as a means to determine the activity of a site (and as an alternative to the 'Oxcal' function SUM(); currently unpublished), and reverse calibration of dates from calibrated into 14C years (also unpublished).

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Version

Install

install.packages('Bchron')

Monthly Downloads

1,283

Version

4.7.8

License

GPL (>= 2)

Maintainer

Andrew Parnell

Last Published

December 12th, 2025

Functions in Bchron (4.7.8)

plot.BchronRSLRun

Plot output from BchronRSL
plot.BchronDensityRunFast

Plot run from BchronDensityFast
intcal13

Northern hemisphere 2013 calibration curve
coreInfluence

Find the influence of dates in a pair of Bchronology runs across the core
plot.BchronDensityRun

Plot output from BchronDensity
plot.BchronCalibratedDates

Plot calibrated dates from a BchronCalibrate run
intcal20

Northern hemisphere 2020 calibration curve
plot.BchronologyRun

Plot output from Bchronology
summary.BchronCalibratedDates

Summarise a BchronCalibrate object
createCalCurve

Create a new calibration curve
predict.BchronologyRun

Predict ages of other positions for a BchronologyRun object
shcal20

Southern hemisphere 2020 calibration curve
unCalibrate

Uncalibrate a Radiocarbon date
sampleAges

Get sample ages from a set of Bchron calibrated dates
summary.BchronologyRun

Summarise a Bchronology object
summary.BchronRSLRun

Summarise a BchronRSL run
summary.BchronDensityRun

Summarise a Bchron density object
marine13

Marine 2013 calibration curve
shcal13

Southern hemisphere 2013 calibration curve
marine20

Marine 2020 calibration curve
TestChronData

Example chronology file for use with the BchronRSL function.
Bchronology

Runs the Compound Poisson-Gamma chronology model of Haslett and Parnell (2008)
BchronDensityFast

Non-parametric phase model (faster version)
BchronCheck

Check data for input into BchronCalibrate or Bchronology
Bchron

Bchron: Radiocarbon dating, age-depth modelling, relative sea level rate estimation, and non-parametric phase modelling
BchronDensity

Non-parametric phase model
BchronRSL

Relative sea level rate (RSL) estimation
BchronCalibrate

Fast radiocarbon calibration
hdr

Calculate highest density regions for Bchron calibrated ages
dateInfluence

Find the influence of the dates in a Bchronology run
Sluggan

Sluggan Moss data
Glendalough

Glendalough data
normal

Data for dummy calibration of normally distributed ages
%>%

Pipe operator
TestRSLData

Relative sea level data
choosePositions

Compute positions to date next which result in maximal decrease of chronological uncertainty