For Cpx-Opx. Only for garnet peridotites. Constraint for CPX: 2*(CA/(CA+MG)) < 1.
This sensor from TPF collection
| Article | Finnerty, A. A., Boyd, F. R. Evaluation of thermobarometers for garnet peridotites, 1984 [ref] (clarification required) |
|---|---|
| Callibration | |
| Precision | |
| Ranges | |
| Renew sensors |
source("utilities_tpf.r");
sensors.t.cpx_opx_finnerty_boyd_1984 <- function(Cpx, P, usePFU = FALSE, ...){
row_names = Cpx$Name;
if(!usePFU) Cpx <- tpf.recalc_minaral("CPX",Cpx);
X <- Cpx$Ca_pfu / (Cpx$Ca_pfu + Cpx$Mg_pfu);
T <- rep(NaN, nrow(Cpx));
if (2 * X<1) {
T <- exp((log(1 - 2 * X) + 5.37 * log(1941 + 5.04 * P)) / 5.37) - 273.15;
}
return(data.frame(Name=paste0(row_names),P=P,T_calc=T));
}
sensors.t.cpx_opx_finnerty_boyd_1984.args <- function(){
ars <- list();
ars$minerals <- c("Cpx");
ars$ranges <- c("P");
return(ars);
}
sensors.t.cpx_opx_finnerty_boyd_1984.test <- function(){
sensors.t.cpx_opx_finnerty_boyd_1984(data.frame(Name=c('Test'), SiO2_wtp=c(50), CaO_wtp=c(10), MgO_wtp=c(20)),15);
}