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Table 4 Summary of experiment results

From: Major element composition of an Early Enriched Reservoir: constraints from 142Nd/144Nd isotope systematics in the early Earth and high-pressure melting experiments of a primitive peridotite

 

Run number

Iteration step

Added melt (wt%)

T (°C)

Duration (h)

Equilibrium assemblage

Phase proportions*

  

R2a

KD b

Fe-loss (%)

KLB-1

      

ol

cpx

gt

liq

   
 

5K2353

–

–

1700

4.5

ol, cpx, gt

63.3

22.8

13.9

–

0.40

–

0.0

 

1K1976

–

–

1750

3.0

ol, cpx, gt, liq

62.6

24.5

13.0

trace

1.49

–

0.7

 

1K1975

–

–

1800

0.3

ol, melt

35.4

–

–

64.6

2.39

0.35(+0.03, -0.07)

1.4

MISE

             
 

1K2019

1

14

1750

1.5

ol, cpx, gt, liq

54.0

9.8

8.2

28.1

0.01

0.34(+0.05, -0.05)

–

 

1K2042

2

20

1750

1.5

ol, cpx, gt, liq

47.0

18.2

8.6

26.1

0.01

0.35(+0.1, -0.07)

–

 

1K2055

3

20

1750

1.5

ol, cpx, gt, liq

41.4

11.2

4.6

42.7

0.04

0.36(+0.08, -0.07)

–

 

1K2116

4

20

1750

1.5

ol, cpx, gt, liq

46.2

13.6

8.0

32.2

0.11

0.37(+0.07, -0.06)

–

 

1K2141

5

20

1750

1.5

ol, cpx, gt, liq

51.4

19.0

12.5

17.1

0.38

0.33(+0.09, -0.06)

–

  1. *Abbreviations: ol olivine, cpx clinopyroxene, grt garnet, liq quenched liquid
  2. aSum of squared residuals in mass-balance calculations
  3. bFe–Mg exchange coefficients between residual olivine and quenched melt. The maximum and minimum values were calculated from errors (1σ) on FeO and MgO contents in olivine and quenched liquid