IsoplotR: Statistical Toolbox for Radiometric Geochronology
Version 0.14

An R implementation of Ken Ludwig's popular Isoplot add-in to Microsoft Excel. 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 the 'York' approach. 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 Pb-Pb, Re-Os, Sm-Nd, Lu-Hf and Rb-Sr isochrons.

Getting started

Package details

AuthorPieter Vermeesch [aut, cre]
Date of publication2017-06-18 17:37:33 UTC
MaintainerPieter Vermeesch <>
Package repositoryView on CRAN
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IsoplotR documentation built on June 20, 2017, 9:10 a.m.