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Progress in Earth and Planetary Science

Table 3 P and T dependences of the rate constant k and growth rate

From: Back-transformation processes in high-pressure minerals: implications for planetary collisions and diamond transportation from the deep Earth

Reaction

ln k0

E* (kJ/mol)

V* (cm3/mol)

Ringwoodite to olivine1

29.6 (4.1)

456 (34)

6.9 (1.0)

Wadsleyite to olivine2

17.2 (2.5)

431 (22)

6.9 (fixed)

Brg glass to OEn3

108 (10)

1025 (88)

10.7 (3.4)

  1. The uncertainties in kinetic parameters are listed in parentheses
  2. 1Equation (3) was fitted to the growth rate data obtained in this study
  3. 2Equation (3) was fitted to the growth rate data obtained in Reynard et al. (1996) and Hu and Sharp (2017) assuming the same activation volume as that of the ringwoodite to olivine transformation
  4. 3Equation (4) was fitted to the rate constant k data obtained in this study
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