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 B: Solid Earth |
| Volume | 119 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 2014 |
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ASJC Scopus subject areas
- Geochemistry and Petrology
- Geophysics
- Earth and Planetary Sciences (miscellaneous)
- Space and Planetary Science
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No effect of water on oxygen self-diffusion rate in forsterite. / Fei, Hongzhan; Wiedenbeck, Michael; Yamazaki, Daisuke; Katsura, Tomoo.
In: Journal of Geophysical Research B: Solid Earth, Vol. 119, No. 10, 2014, p. 7598-7606.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - No effect of water on oxygen self-diffusion rate in forsterite
AU - Fei, Hongzhan
AU - Wiedenbeck, Michael
AU - Yamazaki, Daisuke
AU - Katsura, Tomoo
PY - 2014
Y1 - 2014
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84915747632&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84915747632&partnerID=8YFLogxK
U2 - 10.1002/2014JB011141
DO - 10.1002/2014JB011141
M3 - Article
AN - SCOPUS:84915747632
VL - 119
SP - 7598
EP - 7606
JO - Journal of Geophysical Research
JF - Journal of Geophysical Research
SN - 0148-0227
IS - 10
ER -