Continental crust magmatic mixtures. NMORB - Normal mid-ocean-rige basalt, EMORB - Enriched mid-ocean-rige basalt, VAC - volcanic arc tholeiites, * - back arc basin, Cont. - continental.
| Reference | Cabanis, B. Le diagramme La/10-Y/15-Nb/8 : unoutil pour la discrimination des series volcaniques et la mise en evidence des processus de melande et/ou de contamination crustale, 1989 [ref] |
| Data | bulk |
| Input | La_ppm, Y_ppm, Nb_ppm |
require('ggtern');
classifydiag.la_y_nb_cabanis <- function (wtp_data, ...)
{
ds <- selectNames(wtp_data,c('Name','La_ppm', 'Y_ppm', 'Nb_ppm'))
pts <- data.frame(Name=ds$Name,
X = ds$La_ppm/10,
Y = ds$Y_ppm/15,
Z = ds$Nb_ppm/8);
labels <- c("La/10", "Y/15", "Nb/8");
lines <- data.frame(X1 = c(0.00, 0.32, 0.43, 0.27, 0.12, 0.16, 0.22, 0.29),
Y1 = c(1.00, 0.68, 0.57, 0.56, 0.80, 0.68, 0.50, 0.28),
Z1 = c(0.00, 0.00, 0.00, 0.17, 0.08, 0.17, 0.28, 0.43),
X2 = c(0.62, 0.24, 0.34, 0.19, 0.38, 0.00, 0.00, 0.00),
Y2 = c(0.00, 0.62, 0.47, 0.60, 0.00, 0.76, 0.60, 0.42),
Z2 = c(0.38, 0.15, 0.20, 0.21, 0.62, 0.24, 0.40, 0.58));
marks <- data.frame(Label=c("VAT", "NMORB", "*", "EMORB", "Calc-alkali", "Cont.", "Alkaline", "Intercont. rifts"),
X=c(0.24, 0.07, 0.20, 0.10, 0.70, 0.45, 0.17, 0.18),
Y=c(0.70, 0.80, 0.63, 0.45, 0.10, 0.10, 0.20, 0.10),
Z=c(0.07, 0.17, 0.17, 0.43, 0.20, 0.45, 0.63, 0.72));
ret <- c();
ret$type <- "ternogram";
ret$points <- pts;
ret$labels <- labels;
ret$lines <- lines;
ret$marks <- marks;
return(ret);
}