TAS: TAS diagram

In pvermees/GeoplotR: Toolbox for Geological Plots

TAS diagram

Description

Total Alkali Silica diagram

Usage

TAS(
  Na2O = NULL,
  K2O = NULL,
  SiO2 = NULL,
  xlim = NULL,
  ylim = NULL,
  plutonic = FALSE,
  show.labels = TRUE,
  short = TRUE,
  ...
)

Arguments

Na2O	vector with Na_2O concentrations (wt%)
K2O	vector with K_2O concentrations (wt%)
SiO2	vector with SiO_2 concentrations (wt%)
xlim	x-axis limits
ylim	y-axis limits
plutonic	logical. If TRUE, uses the nomenclature of Middlemost (1994).
show.labels	logical. If TRUE, labels the discrimination fields on the plot.
short	use short labels when using the additional argument show.labels=TRUE.
...	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 rock types

References

Le Maitre, R. W., Streckeisen, A., Zanettin, B., Bas, M. J. L., Bonin, B., and Bateman, P., 2004, "Igneous Rocks: A Classification and Glossary of Terms": Cambridge University Press, v. -1, no. 70, p. 93–120.

Middlemost, E.A., 1994. Naming materials in the magma/igneous rock system. Earth-science reviews, 37(3-4), pp.215-224.

Examples

data(test,package='GeoplotR')
TAS(test[,'Na2O'],test[,'K2O'],test[,'SiO2'])

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