srilanka: An example data set: electron microprobe data.

Description Usage Format Details References Examples

Description

This dataset is kindly provided by Anne-Magali Seydoux-Guillaume [email protected] and has been published in Seydoux-Guillaume et al. (2012).

Usage

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Format

A data frame with 32 observations on the following 6 variables:

U

U concentration (ppm)

errU

error on the measurement of U concentration

Th

Th concentration (ppm)

ErrTh

error on the measurement of Th concentration

Pb

Pb concentration (ppm)

ErrPb

error on the measurement of Pb concentration

Details

The first 8 observations are group control data (more precisely, they correspond to standard reference analyses). When testing if all the observations are issued from a single population, the assumption is thus rejected. Removing the first 8 observations leads to obtain a positive answer when testing if the observations come from the same population. See demo(srilanka).

References

Seydoux-Guillaume A.M., Montel J.M., Bingen B., Bosse V., de Parseval P., Paquette J.L., Janots E., Wirth R. (2012) Low-temperature alteration of monazite: fluid mediated coupled dissolution-precipitation, irradiation damage and disturbance of the U-Pb and Th-Pb chronometers. Chemical Geology, 330–331, 140–158.

Examples

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data(srilanka)
# with control group data
summary(srilanka)
# without control group data
summary(srilanka[9:32,])

NiLeDAM documentation built on May 31, 2017, 3:19 a.m.