Abstract
We systematically measured oxygen self-diffusion coefficients (DO) in forsterite along b crystallographic axis at a pressure of 8 GPa and temperatures of 1600-1800 K, over a wide range of water content (CH2O) from 1 up to ~800 weight ppm. The experimental results suggest that DOα(CH2O)0.05±0.06 ≈ (CH2O)0. Thus, water has no significant effect on oxygen self-diffusion rate in forsterite. Since the CH2O dependence of silicon self-diffusion rate is also very small, the effect of water on olivine rheology is not significant by assuming the diffusion controlled creep mechanism.
| Original language | English |
|---|---|
| Pages (from-to) | 7598-7606 |
| Number of pages | 9 |
| Journal | Journal of Geophysical Research: Solid Earth |
| Volume | 119 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Oct 2014 |
ASJC Scopus subject areas
- Geophysics
- Geochemistry and Petrology
- Earth and Planetary Sciences (miscellaneous)
- Space and Planetary Science
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Fei, H., Wiedenbeck, M., Yamazaki, D., & Katsura, T. (2014). No effect of water on oxygen self-diffusion rate in forsterite. Journal of Geophysical Research: Solid Earth, 119(10), 7598-7606. https://doi.org/10.1002/2014JB011141