Global regression, based on the partitioning of enstatite + ferrosilite (Fm2Si2O6 = EnFs; FmO = FeO + MgO + MnO) between clinopyroxene and orthopyroxene. Cpx with Mg#>0.75.
| Reference | K. D. Putirka Thermometers and Barometers for Volcanic Systems, 2008 [ref] |
|---|---|
| Collibration | 483 points from different sources |
| Precision | ± 60 °C |
| Ranges | P < 70 kbar, 700 °C < T < 2000 °C |
| Renew sensors | Brey and Köhler (1990) model T(BKN) |
Для улучшения этой статьи следует:
source('recalc_px_putirka.r');
source('interpmin_opx_thompson.r');
source('interpmin_cpx_putirka.r');
sensors.t.opx_cpx_putirka <- function(Opx, Cpx, P=10, usePFU = FALSE, ...){
stopifnot(usePFU == F);
CpxCmp <-interpmin.cpx_putirka(Cpx);
Cpx <- recalc.px_putirka(Cpx);
OpxCmp <- interpmin.opx_thompson(Opx);
Opx <- recalc.px_putirka(Opx);
Tcalc <- 10^4/(11.2-1.96*log(CpxCmp$X_EnFs/OpxCmp$X_Fm2Si2O6)-3.3*Cpx$Ca_pfu-25.8*CpxCmp$X_CrCaTs+33.2*Opx$Mn_pfu-23.6*Opx$Na_pfu-2.08*OpxCmp$X_En-8.33*OpxCmp$X_Di-0.05*P);
Eq_check <- (Cpx$Fe_pfu/Cpx$Mg_pfu)/(Opx$Fe_pfu/Opx$Mg_pfu);
Eq_check <- Eq_check > 0.95 && Eq_check < 1.23;
return (data.frame(Name=paste0(Opx$Name,'-',Cpx$Name),P_seq=P,T_calc_Opx_Cpx_Putirka=Tcalc,Eq_check=Eq_check));
}
sensors.t.opx_cpx_putirka.args <- function() {
ars <- list();
ars$minerals = c('Opx','Cpx');
ars$ranges = c('P');
return(ars);
}