Table A1.

Summary of selected thermodynamic solutions of solid-liquid equilibria for melt inclusions in olivines of the pumices erupted during paroxysmal events. See text and Figure 6 for details. The melt composition is the average melt inclusions in Table 1; olivine and clinopyroxene are analyses n. 1 and n. 14 in Table 2

Reaction (1): Fo (sol)+SiO2=CEnHydrous melt with H2O=3 wt%
T (°C)aFoaCEnGraphic(kJ)log asio2P (MPa)
10000.77850.5563−6.2297−0.4894288
11000.77300.4857−5.0144−0.4918354
11250.77170.4710−4.6908−0.4923374
11500.77050.4572−4.3595−0.4928395
11750.76930.4442−4.0207−0.4933417
12000.76820.4320−3.6743−0.4938440
12500.76610.4098−2.9592−0.4947490
ReferenceSack & Ghiorso (1989)Gasparik (1990)Ghiorso & Sack (1995)
Reaction (2):     Di=1/2SiO2(liq)+1/2Ol(liq)+Wo(liq)Hydrous melt with H2O=3 wt%
P (MPa)aDiaWo(liq)aFo(liq)Graphic(kJ)log asio2T (°C)
100.84610.10820.047546.8242−0.49201089
1000.84600.10860.047646.1747−0.49231105
2000.84580.10900.047745.4615−0.49271122
3000.84570.10940.047944.7580−0.49311139
4000.84550.10980.048044.0649−0.49341155
6000.84530.11040.048242.7123−0.49401186
8000.84510.11110.048341.4069−0.49451214
ReferenceGasparik (1990)Ghiorso & Sack (1995)Ghiorso & Sack (1995)Ghiorso & Sack (1995)Ghiorso & Sack (1995)