ArArRedux (version 0.1)

param: Set or get Ar-Ar_Redux parameters

Description

This function is used to query and modify the half lives, standard ages etc. associated with an object of class redux

Usage

param(X, ...)

Arguments

X

an object of class redux

...

any combination of the parameters given below

Value

• returns the modified redux object OR the current parameter values if no optional arguments are supplied.

Details

param grants access to the following parameters:

l0: 40K decay constant (default value = 5.5492e-4 Ma-1, Renne et al. [2010]) sl0: standard error of the 40K decay constant (default value = 0.0047e-4 Ma-1) l7: 37Ar decay constant (default value = 7.2438 yr-1, Renne and Norman [2001]) sl7: standard error of the 37Ar decay constant (default value = 0.0083 yr-1) l9: 39Ar decay constant (0.002577 yr-1 Stoenner et al. [1965]) sl9: standard error of the 39Ar decay constant (0.000014 yr-1) l6: 36Cl decay constant (default value = 2301.3e-9 yr-1) sl6: standard error of the 36Cl decay constant (default value = 7.6e-9 yr-1 pcl: (36Cl/38Cl)-production rate (default value = 252.7 for OSTR reactor, Renne et al. [2008]) spcl: standard error of the (36Cl/38Cl)-production rate (default value = 1.8) ts: age of the fluence monitor (default = 28.201 Myr for the Fish Canyon Tuff, Kuiper et al. [2008]) sts: standard error of the fluence monitor age (default value = 0.023 Myr) air: atmospheric 40Ar/36Ar ratio (default value = 298.56, Lee et al. [2006]) sair: standard error of the atmospheric 40Ar/36Ar ratio (default value = 0.155)

Examples

data(Melbourne)
param(Melbourne$X)$air
Y <- param(Melbourne$X,air=295.5)
param(Y)$air