No effect of water on oxygen self-diffusion rate in forsterite

Hongzhan Fei; Michael Wiedenbeck; Daisuke Yamazaki; Tomoo Katsura

doi:10.1002/2014JB011141

No effect of water on oxygen self-diffusion rate in forsterite

Hongzhan Fei, Michael Wiedenbeck, Daisuke Yamazaki, Tomoo Katsura

Institute for Planetary Materials

Research output: Contribution to journal › Article › peer-review

20 Citations (Scopus)

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	https://doi.org/10.1002/2014JB011141
Publication status	Published - Oct 2014

ASJC Scopus subject areas

Geophysics
Geochemistry and Petrology
Earth and Planetary Sciences (miscellaneous)
Space and Planetary Science

Access to Document

10.1002/2014JB011141

Cite this

@article{4225d67811af48a09faec1a1f16aa53b,

title = "No effect of water on oxygen self-diffusion rate in forsterite",

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.",

author = "Hongzhan Fei and Michael Wiedenbeck and Daisuke Yamazaki and Tomoo Katsura",

year = "2014",

month = oct,

doi = "10.1002/2014JB011141",

language = "English",

volume = "119",

pages = "7598--7606",

journal = "Journal of Geophysical Research",

issn = "0148-0227",

publisher = "American Geophysical Union",

number = "10",

}

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 - 2014/10

Y1 - 2014/10

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 -

No effect of water on oxygen self-diffusion rate in forsterite

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this