SrY: Sr/Y-Y

In pvermees/GeoplotR: Toolbox for Geological Plots

Sr/Y-Y

Description

(Sr/Y) vs. Y diagram of Drummond (1990), which discriminates between Archean TTG suite and more modern adakites on the one hand, and classical island arcs on the other hand.

Usage

SrY(Sr = NULL, Y = NULL, xlim = NULL, ylim = NULL, show.labels = TRUE, ...)

Arguments

Sr	vector with Sr concentrations (in ppm)
Y	vector with Y concentrations (in ppm)
xlim	x-axis limits
ylim	y-axis limits
show.labels	logical. If TRUE, labels the polygonal decision fields with text strings.
...	additional arguments to the generic points function, may include the logical argument show.labels which labels the fields in the diagram.

Value

a vector with tectonic affinities

References

Drummond MS, Defant MJ (1990) A model for trondhjemite-tonalite-dacite genesis and crustal growth via slab melting: Archean to modern comparisons. J Geophys Res 95:21503– 21521

Examples

data(test,package='GeoplotR')
SrY(Sr=1000,Y=10)

pvermees/GeoplotR documentation built on Aug. 20, 2024, 4:45 a.m.