P-V-T relations of wadsleyite determined by in situ X-ray diffraction in a large-volume high-pressure apparatus

Tomoo Katsura, Anton Shatskiy, M. A Geeth M Manthilake, Shuangmeng Zhai, Daisuke Yamazaki, Takuya Matsuzaki, Takashi Yoshino, Akira Yoneda, Eiji Ito, Mitsuhiro Sugita, Natotaka Tomioka, Akifumi Nozawa, Ken Ichi Funakoshi

Research output: Contribution to journalArticle

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Abstract

The volume of Mg2SiO4 wadsleyite has been precisely measured at pressures of 11 to 20 GPa and temperatures of 300 to 2100 K by means of in situ X-ray diffraction in a multi-anvil apparatus. The fixed isothermal bulk modulus KTO = 169.2 GPa gives its pressure derivative K′TO = 4.1(1). The fixed Debye temperature θ0 = 814 K gives a Grüneisen parameter at ambient pressure γ0 = 1.64(2) and its logarithmic volume dependence q = 1.5(1). The pressure derivative of the isothermal bulk modulus, Anderson-Grüneisen parameter and thermal expansion coefficient at ambient pressure are found to be (∂K T/∂T)P = -0.021(1) GPa/K, δT = 5.5(2), α0 = 2.31(3) × 10-5 + 1.18(3) × 10-8 (T-300) K-1. The pressure and volume dependence of thermal expansion coefficient of wadsleyite is the smallest among those of the mantle minerals. The adiabatic temperature gradient in the upper part of the mantle transition Zone is 0.34(1)K/Km.

Original languageEnglish
Article numberL11307
JournalGeophysical Research Letters
Volume36
Issue number11
DOIs
Publication statusPublished - Jun 16 2009

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wadsleyite
X-ray diffraction
diffraction
x rays
bulk modulus
thermal expansion
Earth mantle
mantle
coefficients
anvils
pressure dependence
temperature gradients
transition zone
temperature gradient
minerals
in situ
specific heat
temperature
expansion
mineral

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Geophysics

Cite this

Katsura, T., Shatskiy, A., Manthilake, M. A. G. M., Zhai, S., Yamazaki, D., Matsuzaki, T., ... Funakoshi, K. I. (2009). P-V-T relations of wadsleyite determined by in situ X-ray diffraction in a large-volume high-pressure apparatus. Geophysical Research Letters, 36(11), [L11307]. https://doi.org/10.1029/2009GL038107

P-V-T relations of wadsleyite determined by in situ X-ray diffraction in a large-volume high-pressure apparatus. / Katsura, Tomoo; Shatskiy, Anton; Manthilake, M. A Geeth M; Zhai, Shuangmeng; Yamazaki, Daisuke; Matsuzaki, Takuya; Yoshino, Takashi; Yoneda, Akira; Ito, Eiji; Sugita, Mitsuhiro; Tomioka, Natotaka; Nozawa, Akifumi; Funakoshi, Ken Ichi.

In: Geophysical Research Letters, Vol. 36, No. 11, L11307, 16.06.2009.

Research output: Contribution to journalArticle

Katsura, T, Shatskiy, A, Manthilake, MAGM, Zhai, S, Yamazaki, D, Matsuzaki, T, Yoshino, T, Yoneda, A, Ito, E, Sugita, M, Tomioka, N, Nozawa, A & Funakoshi, KI 2009, 'P-V-T relations of wadsleyite determined by in situ X-ray diffraction in a large-volume high-pressure apparatus', Geophysical Research Letters, vol. 36, no. 11, L11307. https://doi.org/10.1029/2009GL038107
Katsura, Tomoo ; Shatskiy, Anton ; Manthilake, M. A Geeth M ; Zhai, Shuangmeng ; Yamazaki, Daisuke ; Matsuzaki, Takuya ; Yoshino, Takashi ; Yoneda, Akira ; Ito, Eiji ; Sugita, Mitsuhiro ; Tomioka, Natotaka ; Nozawa, Akifumi ; Funakoshi, Ken Ichi. / P-V-T relations of wadsleyite determined by in situ X-ray diffraction in a large-volume high-pressure apparatus. In: Geophysical Research Letters. 2009 ; Vol. 36, No. 11.
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