Pearce1976 {GCDkit} | R Documentation |
LDA1-LDA2 plot after Pearce (1976) as implemented by Vermeesch (2006).
Pearce1976(major = WR[, c("SiO2", "Al2O3", "TiO2", "CaO", "MgO", "MnO", "K2O", "Na2O")], pch = labels[, "Symbol"], col = labels[, "Colour"], cex = labels[, "Size"], show.labels = TRUE, short = TRUE, xlim = c(-10, 8), ylim = c(-8, 10), ...)
major |
selected major element oxides (in wt. %) |
pch |
plotting symbol - see |
col |
plotting symbol colour |
cex |
plotting symbol size |
show.labels |
logical. If |
short |
use short labels when using the additional argument |
xlim |
x-axis limits |
ylim |
y-axis limits |
... |
additional arguments to the generic |
This plot comes from the GeoplotR collection available online at https://isoplotr.es.ucl.ac.uk/geoplotr.
A list with tectonic affinities.
This plot is not Figaro-compatible.
Pieter Vermeesch, p.vermeesch@ucl.ac.uk,
GCDkit implementation by Vojtěch Janoušek, vojtech.janousek@geology.cz
Pearce JA (1976) Statistical analysis of major element patterns in basalts. J Petrol 17:15-43 doi: 10.1093/petrology/17.1.15
Vermeesch P (2006) Tectonic discrimination diagrams revisited. Geochem Geophys Geosyst 7:Q06017 doi: 10.1029/2005GC001092
sampleDataset("atacazo") out <- Pearce1976() print(out$class) print(out)