ZrTi: Ti-Zr

In pvermees/GeoplotR: Toolbox for Geological Plots

Ti-Zr

Description

Ti-Zr tectonic discrimination diagram.

Usage

ZrTi(
  Zr = NULL,
  Ti = NULL,
  type = c("Pearce", "Dilek", "LDA", "QDA"),
  ternary = FALSE,
  pch = 21,
  bg = NULL,
  show.labels = FALSE,
  short = TRUE,
  xlim = NULL,
  ylim = NULL,
  ...
)

Arguments

Zr	vector with Zr concentrations (ppm)
Ti	vector with Ti concentrations (ppm)
type	either 'LDA' for linear discriminant analysis, 'QDA' for quadratic discriminant analysis, 'Pearce' for the nominal decision boundaries of Pearce and Cann (1973), or 'Dilek' for the nominal decision boundaries of Dilek and Furnes (2009).
ternary	logical. If TRUE, produces a ternary diagram. Only used if type is LDA or QDA.
pch	plot character. See ?par for details.
bg	fill colour for the plot character.
show.labels	logical. If TRUE, labels the polygonal decision fields with text strings.
short	use short labels when using the additional argument show.labels=TRUE.
xlim	x-axis limits
ylim	y-axis limits
...	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

Pearce, J.A. and Cann, J.R., 1973. Tectonic setting of basic volcanic rocks determined using trace element analyses. Earth and Planetary Science Letters, 19(2), pp. 290-300.

Dilek, Y. and Furnes, H., 2009, Structure and geochemistry of Tethyan ophiolites and their petrogenesis in subduction rollback systems. Lithos, v. 113, p. 1-20.

Examples

data(test,package='GeoplotR')
ZrTi(Zr=c(50,40,60),Ti=c(1000,4000,6000))

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