IsoplotRexamples and 11-item list containing:UPb: an object of class UPb containing a high
precision U-Pb dataset packaged with Ken Ludwig's Isoplot
program.
DZ: an object of class detrital containing a detrital
zircon U-Pb dataset from Namibia.
ArAr: an object of class ArAr containing a
$^{40}Ar/^{39}Ar$ spectrum of Skye basalt produced by Sarah
Sherlock (Open University).
UThHe: an object of class UThHe containing a
U-Th-Sm-He dataset of Fish Lake apatite produced by Daniel Stockli
(UT Austin).
FT1: an object of class fissiontracks containing an
external detector dataset published by Galbraith and Green (1990)
FT2: an object of class fissiontracks containing a
synthetic LA-ICP-MS-based fission track dataset using the zeta
calibration method.
FT3: an object of class fissiontracks containing a
synthetic LA-ICP-MS-based fission track dataset using the absolute
dating approach.
average: an object of class other containing the
$^{206}Pb/^{238}U$-ages and errors of dataset UPb.
KDE: an object of class 'other' containing the
$^{206}Pb/^{238}U$-ages (but not the errors) of dataset
UPb.
spectrum: an object of class 'other' containing the
$^{39}Ar$ abundances, $^{40}Ar/^{39}Ar$-ages and errors of
dataset ArAr.
MountTom: an object of class 'other' containing a
dataset of dispersed zircon fission track ages from Brandon and
Vance (1992).
Galbraith, R. F. and Green, P. F., 1990: Estimating the component ages in a finite mixture, Nuclear Tracks and Radiation Measurements, 17, 197-206.
Ludwig, K. R. User's manual for Isoplot 3.00: a geochronological toolkit for Microsoft Excel. No. 4. Kenneth R. Ludwig, 2003.
Vermeesch, Pieter, and Eduardo Garzanti. "Making geological sense of 'Big Data' in sedimentary provenance analysis." Chemical Geology 409 (2015): 20-27.
Vermeesch, Pieter. "Three new ways to calculate average (U-Th)/He ages." Chemical Geology 249.3 (2008): 339-347.
data(examples)
concordia(examples$UPb)
dev.new()
kde(examples$DZ)
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