Measurement of hydrous peridotite magma density at high pressure using the X-ray absorption method

Tatsuya Sakamaki; Eiji Ohtani; Satoru Urakawa; Akio Suzuki; Yoshinori Katayama

doi:10.1016/j.epsl.2009.07.030

Measurement of hydrous peridotite magma density at high pressure using the X-ray absorption method

Tatsuya Sakamaki, Eiji Ohtani, Satoru Urakawa, Akio Suzuki, Yoshinori Katayama

SCI - Earth Science

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

66 Citations (Scopus)

Abstract

The density of hydrous peridotite magma containing 5 wt.% H₂O was measured at pressures and temperatures up to 4.3 GPa and 2073 K, respectively, using the X-ray absorption method. A fit of pressure-density-temperature data to the high-temperature Birch-Murnaghan equation of state yields isothermal bulk modulus K_T = 8.8 ± 1.9 GPa, its pressure derivative K′ = 9.9 ± 3.6 and the temperature derivative of the bulk modulus (∂K_T/∂T)_P = - 0.0022 ± 0.0015 GPa/K at 1773 K. The small bulk modulus of the hydrous peridotite magma compared with that of the dry peridotite magma reflects the effect of water, which is more compressible than the silicate melt. The partial molar volume of H₂O in magma under high pressure conditions was calculated and fitted using the Vinet equation of state. The isothermal bulk modulus was K_T = 2.4 ± 1.0 GPa, and its pressure derivative was K′ = 5.7 ± 1.5 at 1973 K.

Original language	English
Pages (from-to)	293-297
Number of pages	5
Journal	Earth and Planetary Science Letters
Volume	287
Issue number	3-4
DOIs	https://doi.org/10.1016/j.epsl.2009.07.030
Publication status	Published - 2009 Oct 15

Keywords

density
equation of state
HO
high pressure
hydrous peridotite magma
X-ray absorption method

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10.1016/j.epsl.2009.07.030

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@article{0111f7f477464b9eb317fd0c866b467e,

title = "Measurement of hydrous peridotite magma density at high pressure using the X-ray absorption method",

abstract = "The density of hydrous peridotite magma containing 5 wt.% H2O was measured at pressures and temperatures up to 4.3 GPa and 2073 K, respectively, using the X-ray absorption method. A fit of pressure-density-temperature data to the high-temperature Birch-Murnaghan equation of state yields isothermal bulk modulus KT = 8.8 ± 1.9 GPa, its pressure derivative K′ = 9.9 ± 3.6 and the temperature derivative of the bulk modulus (∂KT/∂T)P = - 0.0022 ± 0.0015 GPa/K at 1773 K. The small bulk modulus of the hydrous peridotite magma compared with that of the dry peridotite magma reflects the effect of water, which is more compressible than the silicate melt. The partial molar volume of H2O in magma under high pressure conditions was calculated and fitted using the Vinet equation of state. The isothermal bulk modulus was KT = 2.4 ± 1.0 GPa, and its pressure derivative was K′ = 5.7 ± 1.5 at 1973 K.",

keywords = "density, equation of state, HO, high pressure, hydrous peridotite magma, X-ray absorption method",

author = "Tatsuya Sakamaki and Eiji Ohtani and Satoru Urakawa and Akio Suzuki and Yoshinori Katayama",

note = "Funding Information: We thank H. Terasaki and T. Sakai of Tohoku University for useful discussions on the manuscript. This work was supported by a Grant-in-Aid for Scientific Research to EO (No. 16340164 ) and SU ( 13440163 and 16340170 ) from the Ministry of Education, Culture, Sports, Science, and Technology of the Japanese Government . This work was also partially supported by the Global Center of Excellence program of Earth and Planetary Science, Tohoku University, Japan . TS was supported by a Research Fellowship of the Japan Society for the Promotion of Science for Young Scientists . The synchrotron radiation experiments were performed at the BL22XU line of the JAEA SPring-8 facility under Common-Use Facility Program of JAEA (Proposal No. 2008A3722 and 2008B3726).",

year = "2009",

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doi = "10.1016/j.epsl.2009.07.030",

language = "English",

volume = "287",

pages = "293--297",

journal = "Earth and Planetary Science Letters",

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TY - JOUR

T1 - Measurement of hydrous peridotite magma density at high pressure using the X-ray absorption method

AU - Sakamaki, Tatsuya

AU - Ohtani, Eiji

AU - Urakawa, Satoru

AU - Suzuki, Akio

AU - Katayama, Yoshinori

N1 - Funding Information: We thank H. Terasaki and T. Sakai of Tohoku University for useful discussions on the manuscript. This work was supported by a Grant-in-Aid for Scientific Research to EO (No. 16340164 ) and SU ( 13440163 and 16340170 ) from the Ministry of Education, Culture, Sports, Science, and Technology of the Japanese Government . This work was also partially supported by the Global Center of Excellence program of Earth and Planetary Science, Tohoku University, Japan . TS was supported by a Research Fellowship of the Japan Society for the Promotion of Science for Young Scientists . The synchrotron radiation experiments were performed at the BL22XU line of the JAEA SPring-8 facility under Common-Use Facility Program of JAEA (Proposal No. 2008A3722 and 2008B3726).

PY - 2009/10/15

Y1 - 2009/10/15

N2 - The density of hydrous peridotite magma containing 5 wt.% H2O was measured at pressures and temperatures up to 4.3 GPa and 2073 K, respectively, using the X-ray absorption method. A fit of pressure-density-temperature data to the high-temperature Birch-Murnaghan equation of state yields isothermal bulk modulus KT = 8.8 ± 1.9 GPa, its pressure derivative K′ = 9.9 ± 3.6 and the temperature derivative of the bulk modulus (∂KT/∂T)P = - 0.0022 ± 0.0015 GPa/K at 1773 K. The small bulk modulus of the hydrous peridotite magma compared with that of the dry peridotite magma reflects the effect of water, which is more compressible than the silicate melt. The partial molar volume of H2O in magma under high pressure conditions was calculated and fitted using the Vinet equation of state. The isothermal bulk modulus was KT = 2.4 ± 1.0 GPa, and its pressure derivative was K′ = 5.7 ± 1.5 at 1973 K.

AB - The density of hydrous peridotite magma containing 5 wt.% H2O was measured at pressures and temperatures up to 4.3 GPa and 2073 K, respectively, using the X-ray absorption method. A fit of pressure-density-temperature data to the high-temperature Birch-Murnaghan equation of state yields isothermal bulk modulus KT = 8.8 ± 1.9 GPa, its pressure derivative K′ = 9.9 ± 3.6 and the temperature derivative of the bulk modulus (∂KT/∂T)P = - 0.0022 ± 0.0015 GPa/K at 1773 K. The small bulk modulus of the hydrous peridotite magma compared with that of the dry peridotite magma reflects the effect of water, which is more compressible than the silicate melt. The partial molar volume of H2O in magma under high pressure conditions was calculated and fitted using the Vinet equation of state. The isothermal bulk modulus was KT = 2.4 ± 1.0 GPa, and its pressure derivative was K′ = 5.7 ± 1.5 at 1973 K.

KW - density

KW - equation of state

KW - HO

KW - high pressure

KW - hydrous peridotite magma

KW - X-ray absorption method

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U2 - 10.1016/j.epsl.2009.07.030

DO - 10.1016/j.epsl.2009.07.030

M3 - Article

AN - SCOPUS:70350133381

SN - 0012-821X

VL - 287

SP - 293

EP - 297

JO - Earth and Planetary Science Letters

JF - Earth and Planetary Science Letters

IS - 3-4

ER -

Measurement of hydrous peridotite magma density at high pressure using the X-ray absorption method

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Keywords

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