Grain growth kinetics of majorite and stishovite in MORB

Daisuke Yamazaki; Takuya Matsuzaki; Takashi Yoshino; Daisuke Suetsugu; Craig Bina; Toru Inoue; Douglas Wiens; Mark Jellinek

doi:10.1016/j.pepi.2010.09.009

Grain growth kinetics of majorite and stishovite in MORB

Daisuke Yamazaki, Takuya Matsuzaki, Takashi Yoshino, Daisuke Suetsugu, Craig Bina, Toru Inoue, Douglas Wiens, Mark Jellinek

Institute for Planetary Materials

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

3 Citations (Scopus)

Abstract

Grain growth rates of majorite and stishovite, in their aggregates with MORB composition, were studied at 18GPa and temperatures ranging from 1873 to 2223K. The rates of grain growth were expressed by Gn-G0n=k0t exp(-H*/RT) where G is the grain size at time t (s), and G₀ is the initial grain size. We determined the grain growth kinetic parameters for majorite, where n=9.1±1.3, H^*=950±249kJ/mol, and logk₀=-32.5±2.3m^9.1/s for the graphite capsule and logk₀=-31.3±3.9m^9.1/s for the Re capsule. Kinetic parameters for stishovite were determined to be n=6.6±0.9, H^*=599±226kJ/mol, and logk₀=-30.6±0.9m^6.6/s for the graphite capsule and logk₀=-29.0±1.1m^6.6/s for the Re capsule.

Original language	English
Pages (from-to)	183-189
Number of pages	7
Journal	Physics of the Earth and Planetary Interiors
Volume	183
Issue number	1-2
DOIs	https://doi.org/10.1016/j.pepi.2010.09.009
Publication status	Published - Nov 2010

Keywords

Grain size
High-pressure experiment
Majorite
Stishovite

ASJC Scopus subject areas

Astronomy and Astrophysics
Geophysics
Physics and Astronomy (miscellaneous)
Space and Planetary Science

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10.1016/j.pepi.2010.09.009

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title = "Grain growth kinetics of majorite and stishovite in MORB",

abstract = "Grain growth rates of majorite and stishovite, in their aggregates with MORB composition, were studied at 18GPa and temperatures ranging from 1873 to 2223K. The rates of grain growth were expressed by Gn-G0n=k0t exp(-H*/RT) where G is the grain size at time t (s), and G0 is the initial grain size. We determined the grain growth kinetic parameters for majorite, where n=9.1±1.3, H*=950±249kJ/mol, and logk0=-32.5±2.3m9.1/s for the graphite capsule and logk0=-31.3±3.9m9.1/s for the Re capsule. Kinetic parameters for stishovite were determined to be n=6.6±0.9, H*=599±226kJ/mol, and logk0=-30.6±0.9m6.6/s for the graphite capsule and logk0=-29.0±1.1m6.6/s for the Re capsule.",

keywords = "Grain size, High-pressure experiment, Majorite, Stishovite",

author = "Daisuke Yamazaki and Takuya Matsuzaki and Takashi Yoshino and Daisuke Suetsugu and Craig Bina and Toru Inoue and Douglas Wiens and Mark Jellinek",

year = "2010",

month = nov,

doi = "10.1016/j.pepi.2010.09.009",

language = "English",

volume = "183",

pages = "183--189",

journal = "Physics of the Earth and Planetary Interiors",

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T1 - Grain growth kinetics of majorite and stishovite in MORB

AU - Yamazaki, Daisuke

AU - Matsuzaki, Takuya

AU - Yoshino, Takashi

AU - Suetsugu, Daisuke

AU - Bina, Craig

AU - Inoue, Toru

AU - Wiens, Douglas

AU - Jellinek, Mark

PY - 2010/11

Y1 - 2010/11

N2 - Grain growth rates of majorite and stishovite, in their aggregates with MORB composition, were studied at 18GPa and temperatures ranging from 1873 to 2223K. The rates of grain growth were expressed by Gn-G0n=k0t exp(-H*/RT) where G is the grain size at time t (s), and G0 is the initial grain size. We determined the grain growth kinetic parameters for majorite, where n=9.1±1.3, H*=950±249kJ/mol, and logk0=-32.5±2.3m9.1/s for the graphite capsule and logk0=-31.3±3.9m9.1/s for the Re capsule. Kinetic parameters for stishovite were determined to be n=6.6±0.9, H*=599±226kJ/mol, and logk0=-30.6±0.9m6.6/s for the graphite capsule and logk0=-29.0±1.1m6.6/s for the Re capsule.

AB - Grain growth rates of majorite and stishovite, in their aggregates with MORB composition, were studied at 18GPa and temperatures ranging from 1873 to 2223K. The rates of grain growth were expressed by Gn-G0n=k0t exp(-H*/RT) where G is the grain size at time t (s), and G0 is the initial grain size. We determined the grain growth kinetic parameters for majorite, where n=9.1±1.3, H*=950±249kJ/mol, and logk0=-32.5±2.3m9.1/s for the graphite capsule and logk0=-31.3±3.9m9.1/s for the Re capsule. Kinetic parameters for stishovite were determined to be n=6.6±0.9, H*=599±226kJ/mol, and logk0=-30.6±0.9m6.6/s for the graphite capsule and logk0=-29.0±1.1m6.6/s for the Re capsule.

KW - Grain size

KW - High-pressure experiment

KW - Majorite

KW - Stishovite

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Grain growth kinetics of majorite and stishovite in MORB

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