ThTaHf {GCDkit} | R Documentation |
Linear and quadratic discrimination-analysis-based versions of the ternary diagram Zr/4 - 2Nb - Y (Wood 1980)) for geotectonic discrimination of igneous rocks of Vermeesch 2006.
ThTaHf(Th = WR[, "Th", drop = FALSE], Hf = WR[, "Hf", drop = FALSE], Ta = WR[, "Ta", drop = FALSE], type = c("Wood", "LDA", "QDA"), ternary = TRUE, show.labels = TRUE, short = TRUE, ...)
Th |
vector of Th concentrations (ppm) |
Hf |
vector of Hf concentrations (ppm) |
Ta |
vector of Y concentrations (ppm) |
type |
either |
ternary |
logical. If |
show.labels |
logical. If |
short |
logical. uses abbreviated labels for the discrimination fields |
... |
additional arguments for 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
Vermeesch P (2006) Tectonic discrimination diagrams revisited. Geochem Geophys Geosyst 7:Q06017 doi: 10.1029/2005GC001092
Wood DA (1980) The application of a Th-Hf-Ta diagram to problems of tectonomagmatic classification and to establishing the nature of crustal contamination of basaltic lavas of the British Tertiary volcanic province. Earth Planet Sci Lett 50: 11-30 doi: 10.1016/0012-821X(80)90116-8
sampleDataset("sazava") out <- ThTaHf(type="QDA") print(out$class) print(out)