Statistical Toolbox for Radiometric Geochronology
Calculate isotopic ages
Predict isotopic ratios from ages
Plot a (40Ar/39Ar) release spectrum
Plot continuous data as cumulative age distributions
Fits random effects models to overdispersed datasets
Confidence intervals
Geochronological data classes
Concordia diagram
Prepare geochronological data for York regression
Set up a discordance filter
Set up U-series disequilibrium correction for U-Pb geochronology
Dissimilarity between detrital age distributions
Get error ellipse coordinates for plotting
Th-U evolution diagram
Visualise U-Th-He data on a logratio plot or ternary diagram
Calculate and plot isochrons
library(IsoplotR)
Create (a) kernel density estimate(s)
Linear regression of U-Pb data with correlated errors, taking into acc...
Predict disequilibrium concordia_compositions
Multidimensional Scaling
Omnivariant Generalised Least-Squares Regression
Common Pb correction
Finite mixture modelling of geochronological datasets
Visualise heteroscedastic data on a radial plot
Read geochronological data
Create a scatter plot with error ellipses or crosses
Calculate the zeta calibration coefficient for fission track dating
Retrieve and record global settings
Linear regression of X,Y,Z-variables with correlated errors
Calculate the weighted mean age
Linear regression of X,Y-variables with correlated errors
Plots U-Pb data on Wetherill and Tera-Wasserburg concordia diagrams. Calculates concordia and discordia ages. Performs linear regression of measurements with correlated errors using 'York', 'Titterington', 'Ludwig' and Omnivariant Generalised Least-Squares ('OGLS') approaches. Generates Kernel Density Estimates (KDEs) and Cumulative Age Distributions (CADs). Produces Multidimensional Scaling (MDS) configurations and Shepard plots of multi-sample detrital datasets using the Kolmogorov-Smirnov distance as a dissimilarity measure. Calculates 40Ar/39Ar ages, isochrons, and age spectra. Computes weighted means accounting for overdispersion. Calculates U-Th-He (single grain and central) ages, logratio plots and ternary diagrams. Processes fission track data using the external detector method and LA-ICP-MS, calculates central ages and plots fission track and other data on radial (a.k.a. 'Galbraith') plots. Constructs total Pb-U, Pb-Pb, Th-Pb, K-Ca, Re-Os, Sm-Nd, Lu-Hf, Rb-Sr and 230Th-U isochrons as well as 230Th-U evolution plots.