Density of dry peridotite magma at high pressure using an X-ray absorption method

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

doi:10.2138/am.2010.3143

Density of dry peridotite magma at high pressure using an 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

37 Citations (Scopus)

Abstract

The density of a peridotite magma was measured up to 2.5 GPa and 2300 K using an X-ray absorption method. The method allowed measurement of the density of a peridotite melt under seven. different conditions and clarified the pressure and temperature dependence of the density. A fit of the pressure-density-temperature data to the high-temperature Birch-Murnaghan equation of stete yielded the isothermal bulk modulus, K_T0 = 24.0 ± 1.3 GPa, its pressure derivative, K₀′ = 7.3 ± 0.8, and the derivative of bulk modulus (∂K_T/∂T) _P= -0.0027 ± 0.0017 GPa/K at 2100 K. The large bulk modulus and its pressure derivative of the peridotite melt compared with that, of basaltic melt is consistent with previous results from sink-float experiments.

Original language	English
Pages (from-to)	144-147
Number of pages	4
Journal	American Mineralogist
Volume	95
Issue number	1
DOIs	https://doi.org/10.2138/am.2010.3143
Publication status	Published - 2010 Jan

Keywords

Density
Equation of state
High pressure
Peridotite melt
X-ray absorption method

ASJC Scopus subject areas

Geophysics
Geochemistry and Petrology

Access to Document

10.2138/am.2010.3143

Cite this

@article{ff3ce8dc4026477c96809b2d5a5f04a5,

title = "Density of dry peridotite magma at high pressure using an X-ray absorption method",

abstract = "The density of a peridotite magma was measured up to 2.5 GPa and 2300 K using an X-ray absorption method. The method allowed measurement of the density of a peridotite melt under seven. different conditions and clarified the pressure and temperature dependence of the density. A fit of the pressure-density-temperature data to the high-temperature Birch-Murnaghan equation of stete yielded the isothermal bulk modulus, KT0 = 24.0 ± 1.3 GPa, its pressure derivative, K0′ = 7.3 ± 0.8, and the derivative of bulk modulus (∂KT/∂T) P= -0.0027 ± 0.0017 GPa/K at 2100 K. The large bulk modulus and its pressure derivative of the peridotite melt compared with that, of basaltic melt is consistent with previous results from sink-float experiments.",

keywords = "Density, Equation of state, High pressure, Peridotite melt, X-ray absorption method",

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

year = "2010",

month = jan,

doi = "10.2138/am.2010.3143",

language = "English",

volume = "95",

pages = "144--147",

journal = "American Mineralogist",

issn = "0003-004X",

publisher = "Mineralogical Society of America",

number = "1",

}

TY - JOUR

T1 - Density of dry peridotite magma at high pressure using an X-ray absorption method

AU - Sakamaki, Tatsuya

AU - Ohtani, Eiji

AU - Urakawa, Satoru

AU - Suzuki, Akio

AU - Katayama, Yoshinori

PY - 2010/1

Y1 - 2010/1

N2 - The density of a peridotite magma was measured up to 2.5 GPa and 2300 K using an X-ray absorption method. The method allowed measurement of the density of a peridotite melt under seven. different conditions and clarified the pressure and temperature dependence of the density. A fit of the pressure-density-temperature data to the high-temperature Birch-Murnaghan equation of stete yielded the isothermal bulk modulus, KT0 = 24.0 ± 1.3 GPa, its pressure derivative, K0′ = 7.3 ± 0.8, and the derivative of bulk modulus (∂KT/∂T) P= -0.0027 ± 0.0017 GPa/K at 2100 K. The large bulk modulus and its pressure derivative of the peridotite melt compared with that, of basaltic melt is consistent with previous results from sink-float experiments.

AB - The density of a peridotite magma was measured up to 2.5 GPa and 2300 K using an X-ray absorption method. The method allowed measurement of the density of a peridotite melt under seven. different conditions and clarified the pressure and temperature dependence of the density. A fit of the pressure-density-temperature data to the high-temperature Birch-Murnaghan equation of stete yielded the isothermal bulk modulus, KT0 = 24.0 ± 1.3 GPa, its pressure derivative, K0′ = 7.3 ± 0.8, and the derivative of bulk modulus (∂KT/∂T) P= -0.0027 ± 0.0017 GPa/K at 2100 K. The large bulk modulus and its pressure derivative of the peridotite melt compared with that, of basaltic melt is consistent with previous results from sink-float experiments.

KW - Density

KW - Equation of state

KW - High pressure

KW - Peridotite melt

KW - X-ray absorption method

UR - http://www.scopus.com/inward/record.url?scp=77249136918&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=77249136918&partnerID=8YFLogxK

U2 - 10.2138/am.2010.3143

DO - 10.2138/am.2010.3143

M3 - Article

AN - SCOPUS:77249136918

VL - 95

SP - 144

EP - 147

JO - American Mineralogist

JF - American Mineralogist

SN - 0003-004X

IS - 1

ER -

Density of dry peridotite magma at high pressure using an X-ray absorption method

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this