Whalen_failure3 {GCDkit}R Documentation

Whalen and Hildebrand (2019) - Nb + Y vs. trace-element ratio plots

Description

Trace-element discrimination of arc, slab failure, and A-type granitic rocks of Whalen and Hildebrand (2019).

Usage

Whalen_failure3(plot.txt = getOption("gcd.plot.text"), filter.SiO2 = TRUE)

Arguments

plot.txt

logical; annotate the individual fields by textual labels?

filter.SiO2

logical; should be plotted only samples with SiO2 = 55-70 wt. %?

Details

Suite of five Nb + Y vs. trace-element ratio plots (Nb/Y, La/Yb, Gd/Yb, Ta/Yb and Sm/Yb) for discrimination of geotectonic environment of granitoid rocks (Whalen and Hildebrand, 2019 - fig. 7. It discriminates between (I-type) Arc, Slab failure and A1- and A2-type granitoid compositions.

Whalen_failure3.png

Value

sheet

list with Figaro Style Sheet data

x.data

x coordinates

y.data

y coordinates

Note

For non-A type samples, only those with ASI < 1.1 and SiO2 = 55-70 wt. % are plotted, as suggested in the original paper. This eliminates S-types, cumulate mafic arc, and felsic slab failure samples. The samples having Y + Nb > 60 and Yb + Ta > 6 ppm are A-types and these are plotted even if SiO2 > 70 wt.

If filter.SiO2=TRUE, the SiO2 filter is skipped.

Author(s)

Vojtěch Janoušek, vojtech.janousek@geology.cz

References

Whalen JB, Hildebrand RS (2019) Trace element discrimination of arc, slab failure, and A-type granitic rocks. Lithos 348-349: 105179. doi: 10.1016/j.lithos.2019.105179

See Also

figaro plotDiagram

Examples

    sampleDataset("blatna")
    
    # plot the diagrams
    plotPlate("Whalen_failure3")

[Package GCDkit version 6.3.0 Index]