b) a) c) d) 20 25 30 35 550 500 600 650 700 750 800 Temperature (°C) Pressure (kbar) X Mg Grossular Pyrope c c c b b a a 20 25 30 35 550 500 600 650 700 750 800 Temperature (°C) Pressure (kbar) c c c b b a a 0.34 0.32 0.30 0.26 0.22 0.18 0.14 X Mg 20 25 30 35 550 500 600 650 700 750 800 Temperature (°C) Pressure (kbar) c c c b b a a 0.21 0.18 0.14 0.10 0.06 0.24 0.24 0.21 Pyrope c c c b b a a 20 25 30 35 550 500 600 650 700 750 800 Temperature (°C) Pressure (kbar) Grossular 0.36 0.36 0.34 0.30 0.30 0.40 0.34 0.26 Appendix I. Eclogite D197 compositional isopleths for the calculated phase equilibria diagram. Labels a (core), b (mantle), and c (rim) in the figure correspond to the measured points shown in Figure 15a. Thick lines represent measured values. The grey star repre- sents the peak conditions shown in Figure 7b. (a) Grossular content. (b) Pyrope content. (c) XMg. Predicted XMg values do not correspond to the measured values. (d) Intersec- tion between garnet grossular and pyrope isopleths.
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-
b)a)
c) d)
20
25
30
35
550500 600 650 700 750
800
Temperature (°C)
Pres
sure
(kba
r)
XMgGrossularPyrope
c
c
c b
b
a
a
20
25
30
35
550500 600 650 700 750 800
Temperature (°C)
Pres
sure
(kba
r)
c
c
c b
b
a
a
0.340.32
0.30
0.26
0.22
0.18
0.14
XMg
20
25
30
35
550500 600 650 700 750
800
Temperature (°C)
Pres
sure
(kba
r)
c
c
c b
b
a
a
0.210.180.14
0.10
0.06
0.24
0.24
0.21
Pyrope
c
c
c b
b
a
a
20
25
30
35
550500 600 650 700 750 800
Temperature (°C)
Pres
sure
(kba
r)Grossular
0.36
0.36
0.34
0.30
0.30
0.40
0.34
0.26
Appendix I. Eclogite D197 compositional isopleths for the calculated phase equilibria diagram. Labels a (core), b (mantle), and c (rim) in the figure correspond to the measured points shown in Figure 15a. Thick lines represent measured values. The grey star repre-sents the peak conditions shown in Figure 7b. (a) Grossular content. (b) Pyrope content. (c) XMg. Predicted XMg values do not correspond to the measured values. (d) Intersec-tion between garnet grossular and pyrope isopleths.
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