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Bchron (version 4.7.7)

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mixtures as a means to determine the activity of a site (and as an alternative to the 'Oxcal' function SUM(); currently unpublished), and reverse calibration of dates from calibrated into 14C years (also unpublished).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

262

Version

4.7.7

License

GPL (>= 2)

Maintainer

Andrew Parnell

Last Published

June 13th, 2025

Functions in Bchron (4.7.7)

plot.BchronologyRun

Plot output from Bchronology
sampleAges

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

Predict ages of other positions for a BchronologyRun object
summary.BchronCalibratedDates

Summarise a BchronCalibrate object
plot.BchronCalibratedDates

Plot calibrated dates from a BchronCalibrate run
marine20

Marine 2020 calibration curve
shcal20

Southern hemisphere 2020 calibration curve
plot.BchronDensityRun

Plot output from BchronDensity
plot.BchronRSLRun

Plot output from BchronRSL
plot.BchronDensityRunFast

Plot run from BchronDensityFast
normal

Data for dummy calibration of normally distributed ages
summary.BchronDensityRun

Summarise a Bchron density object
summary.BchronologyRun

Summarise a Bchronology object
unCalibrate

Uncalibrate a Radiocarbon date
%>%

Pipe operator
shcal13

Southern hemisphere 2013 calibration curve
summary.BchronRSLRun

Summarise a BchronRSL run
Bchron

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

Fast radiocarbon calibration
Bchronology

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

Glendalough data
BchronRSL

Relative sea level rate (RSL) estimation
BchronDensityFast

Non-parametric phase model (faster version)
BchronCheck

Check data for input into BchronCalibrate or Bchronology
intcal13

Northern hemisphere 2013 calibration curve
intcal20

Northern hemisphere 2020 calibration curve
marine13

Marine 2013 calibration curve
dateInfluence

Find the influence of the dates in a Bchronology run
hdr

Calculate highest density regions for Bchron calibrated ages
coreInfluence

Find the influence of dates in a pair of Bchronology runs across the core
BchronDensity

Non-parametric phase model
choosePositions

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

Create a new calibration curve
TestRSLData

Relative sea level data
Sluggan

Sluggan Moss data
TestChronData

Example chronology file for use with the BchronRSL function.