hfOptions | R Documentation |
Graphical user interface (GUI) allowing selection of the main parameters for the Hf isotopic data recalculations.
hfOptions()
This GUI editor, written in the Tcl/Tk language, allows choosing the main Hf isotopic data recalculation options, i.e. the 176Lu decay constant, 176Lu/177Hf and 176Hf/177Hf ratios of the CHUR and Depleted Mantle reservoirs, and 176Lu/177Hf ratio of the intermediate crustal reservoir used for calculation of the two-stage Hf model ages.
All the possible recalculation options are stored in a simple text file
'constants_hfIso.xxx
', whereby the currently selected options are marked by an asterisk.
Assigns the following global variables:
lambda |
numeric matrix; the 176Lu decay constant |
CHUR |
numeric matrix; 176Lu/177Hf and 176Hf/177Hf ratios of the CHUR |
DM |
numeric matrix; 176Lu/177Hf and 176Hf/177Hf ratios of the Depleted Mantle (DM) |
R.crust |
numeric vector; 176Lu/177Hf ratio of the intermediate crustal reservoir used for calculation of the two-stage Hf model ages |
Hf.r
For time being, this editor allows only choosing, but not adding/editing the parameters.
Such changes have to be made directly in the configuration file 'constants_hfIso.xxx
'.
Vojtěch Janoušek, vojtech.janousek@geology.cz
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hfIso