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Table 2

Literature data for experimental determinations of rheological data parametrised in the form for dry olivines and pyroxenes.

Material Comp. Creep A n b Q P-range T-range Ref.
mode kJ/mol kbar K

olivine Fo92Fa8 diff. (3.5 ± 1.6) × 10-11 1.5 3 355 ± 120 0.17–0.30 1273–1873 a
olivine disloc. 1260 ± 740 3.0 ± 0.1 0 510 ± 30 10 1473–1573 b
pyroxenite Wo50En40Fs10 disloc. (5.0 ± 4.0) × 10-18 4.7 ± 0.2 0 760 ± 40 3–4.4 1373–1523 c
pyroxenite diff. (1.3 ± 1.0) × 109 1 3 560 ± 30 3–4.4 1373–1523 c
enstatite En94Fs4Wo2 disloc. 7.94 × 105 2.9 0 600 ± 30 10 1473–1523 d

Notes. Stress σ is in bars, grain size G in meters, activation energy Q in kJ/mol, temperature in K. Also shown are pressure and temperature ranges for which experiments are conducted. It is indicated whether the deformation mechanism was dislocation creep or diffusion.

Reference. (a) Schwenn & Goetze (1978); (b) Karato & Jung (2003); (c) Bystricky & Mackwell (2001); (d) Lawlis (1998).

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