Noriyoshi Tsujino - Academia.edu (original) (raw)

Uploads

Papers by Noriyoshi Tsujino

Research paper thumbnail of D111-type guide block for high-pressure deformation experiments

Japan Geoscience Union, Mar 10, 2017

Research paper thumbnail of Lattice preferred orientation of stishovite deformed at high pressure and high temperature

Physics of the Earth and Planetary Interiors, Sep 1, 2020

Research paper thumbnail of High-pressure generation in the Kawai-type multianvil apparatus equipped with tungsten-carbide anvils and sintered-diamond anvils, and X-ray observation on CaSnO3 and (Mg,Fe)SiO3

Comptes Rendus Geoscience, Feb 1, 2019

Research paper thumbnail of Elastic properties of anorthite at high temperature and high pressure

AGU Fall Meeting Abstracts, Dec 1, 2012

Research paper thumbnail of In-situ IR high pressure experiment on hydrous forsterite

Japan Geoscience Union, Mar 10, 2017

Research paper thumbnail of P-V-T equation of state for ∊-iron up to 80 GPa and 1900 K using the Kawai-type high pressure apparatus equipped with sintered diamond anvils

AGU Fall Meeting Abstracts, Dec 1, 2012

Research paper thumbnail of Preliminary experiments on in-situ stress-strain measurements of Ca-Pv and Mg-Pv up to 23 GPa

Japan Geoscience Union, 2014

In order to discuss mantle dynamics in the Earth’s interior, knowledge of viscosity of the Earth’... more In order to discuss mantle dynamics in the Earth’s interior, knowledge of viscosity of the Earth’s lower mantle, which is the highest of the whole mantle, is important. Viscosity models of the Earth’s lower mantle were reported by geophysical observations. However, observation values of viscosity have large variety (2 ̃3 order magnitude). Although determination of viscosity of lower mantle minerals by high pressure experiments is needed to understand mantle dynamics, stress-strain relationship for MgSiO3-perovskite (Mg-Pv) and CaSiO 3-perovskite (Ca-Pv), which are principal minerals of the Earth’s lower mantle, are not reported due to difficulty of high pressure deformation experiments. In this study, we tried in-situ stress-strain measurements of Ca-Pv and Mg-Pv up to 23.0 GPa. In-situ uniaxial deformation experiments were conducted using a deformation DIA apparatus (SPEED-Mk.II) as Kawai-type apparatus at SPring-8 BL04B1. Experimental conditions of Ca-Pv and Mg-Pv are 13.8 GPa, 14...

Research paper thumbnail of TEM observation in the samples of high-pressure in-situ IR experiments

Japan Geoscience Union, 2018

Research paper thumbnail of High-pressure and temperature experiment using Kawai-type apparatus for triaxial deformation

Research paper thumbnail of tuite determined by in situ X-ray diffraction in a 2 large-volume high-pressure apparatus 3

16 Tuite, γ-Ca3(PO4)2, is regarded as an important phosphate mineral in the deep 17 mantle as a h... more 16 Tuite, γ-Ca3(PO4)2, is regarded as an important phosphate mineral in the deep 17 mantle as a host for rare earth elements and large ion lithophile elements, and also for 18 phosphorus. The thermoelastic properties of synthetic γ-Ca3(PO4)2 have been 19 determined at simultaneously high pressures and temperatures of up to 35.4 GPa and 2

Research paper thumbnail of The pressure and thickness of the post-spinel transition in (Mg,Fe)2SiO4 explaining the sharp 660-km discontinuity

Research paper thumbnail of 三軸変形川井型装置による下部マントル条件での(Mg,Fe)SiO3-ペロブスカイトの変形実験

Research paper thumbnail of New results of the post-spinel transition pressure in Mg 2 SiO 4 by means of in-situ X-ray diffraction in a multi-anvil press: complete agreement with the 660-km discontinuity depth

Research paper thumbnail of Crystallographic-preferred-orientation of (Mg,Fe)SiO 3 -bridgmanite : implications for the mantle dynamics in the lower mantle

Research paper thumbnail of Phase transition of wadsleyite-ringwoodite in the Mg2SiO4-Fe2SiO4 system

American Mineralogist, 2019

Research paper thumbnail of Sharp 660-km discontinuity controlled by extremely narrow binary post-spinel transition

Research paper thumbnail of Single-crystal elasticity of (Al,Fe)-bearing bridgmanite and seismic shear wave radial anisotropy at the topmost lower mantle

Earth and Planetary Science Letters, 2019

Research paper thumbnail of Generation of pressures over 40 GPa using Kawai-type multi-anvil press with tungsten carbide anvils

Review of Scientific Instruments, 2016

We have generated over 40 GPa pressures, namely, 43 and 44 GPa, at ambient temperature and 2000 K... more We have generated over 40 GPa pressures, namely, 43 and 44 GPa, at ambient temperature and 2000 K, respectively, using Kawai-type multi-anvil presses (KMAP) with tungsten carbide anvils for the first time. These high-pressure generations were achieved by combining the following pressure-generation techniques: (1) precisely aligned guide block systems, (2) high hardness of tungsten carbide, (3) tapering of second-stage anvil faces, (4) materials with high bulk modulus in a high-pressure cell, and (5) high heating efficiency.

Research paper thumbnail of Effect of cation substitution on bridgmanite elasticity: A key to interpret seismic anomalies in the lower mantle

Scientific Reports, 2016

Seismological observations show that, in some regions of the lower mantle, an increase in bulk so... more Seismological observations show that, in some regions of the lower mantle, an increase in bulk sound velocity, interestingly, occurs in the same volume where there is a decrease in shear velocity. We show that this anti-correlated behavior occurs on cation substitution in bridgmanite by making single crystal elasticity measurements of MgSiO3 and (Mg,Fe,Al)(Si,Al)O3 using inelastic x-ray scattering in the ambient conditions. Cation substitution of ferrous iron and aluminum may explain large low shear velocity provinces in the lower mantle.

Research paper thumbnail of Mantle dynamics inferred from the crystallographic preferred orientation of bridgmanite

Nature, Nov 3, 2016

Seismic shear wave anisotropy is observed in Earth's uppermost lower mantle around several su... more Seismic shear wave anisotropy is observed in Earth's uppermost lower mantle around several subducted slabs. The anisotropy caused by the deformation-induced crystallographic preferred orientation (CPO) of bridgmanite (perovskite-structured (Mg,Fe)SiO3) is the most plausible explanation for these seismic observations. However, the rheological properties of bridgmanite are largely unknown. Uniaxial deformation experiments have been carried out to determine the deformation texture of bridgmanite, but the dominant slip system (the slip direction and plane) has not been determined. Here we report the CPO pattern and dominant slip system of bridgmanite under conditions that correspond to the uppermost lower mantle (25 gigapascals and 1,873 kelvin) obtained through simple shear deformation experiments using the Kawai-type deformation-DIA apparatus. The fabrics obtained are characterized by [100] perpendicular to the shear plane and [001] parallel to the shear direction, implying that t...

Research paper thumbnail of D111-type guide block for high-pressure deformation experiments

Japan Geoscience Union, Mar 10, 2017

Research paper thumbnail of Lattice preferred orientation of stishovite deformed at high pressure and high temperature

Physics of the Earth and Planetary Interiors, Sep 1, 2020

Research paper thumbnail of High-pressure generation in the Kawai-type multianvil apparatus equipped with tungsten-carbide anvils and sintered-diamond anvils, and X-ray observation on CaSnO3 and (Mg,Fe)SiO3

Comptes Rendus Geoscience, Feb 1, 2019

Research paper thumbnail of Elastic properties of anorthite at high temperature and high pressure

AGU Fall Meeting Abstracts, Dec 1, 2012

Research paper thumbnail of In-situ IR high pressure experiment on hydrous forsterite

Japan Geoscience Union, Mar 10, 2017

Research paper thumbnail of P-V-T equation of state for ∊-iron up to 80 GPa and 1900 K using the Kawai-type high pressure apparatus equipped with sintered diamond anvils

AGU Fall Meeting Abstracts, Dec 1, 2012

Research paper thumbnail of Preliminary experiments on in-situ stress-strain measurements of Ca-Pv and Mg-Pv up to 23 GPa

Japan Geoscience Union, 2014

In order to discuss mantle dynamics in the Earth’s interior, knowledge of viscosity of the Earth’... more In order to discuss mantle dynamics in the Earth’s interior, knowledge of viscosity of the Earth’s lower mantle, which is the highest of the whole mantle, is important. Viscosity models of the Earth’s lower mantle were reported by geophysical observations. However, observation values of viscosity have large variety (2 ̃3 order magnitude). Although determination of viscosity of lower mantle minerals by high pressure experiments is needed to understand mantle dynamics, stress-strain relationship for MgSiO3-perovskite (Mg-Pv) and CaSiO 3-perovskite (Ca-Pv), which are principal minerals of the Earth’s lower mantle, are not reported due to difficulty of high pressure deformation experiments. In this study, we tried in-situ stress-strain measurements of Ca-Pv and Mg-Pv up to 23.0 GPa. In-situ uniaxial deformation experiments were conducted using a deformation DIA apparatus (SPEED-Mk.II) as Kawai-type apparatus at SPring-8 BL04B1. Experimental conditions of Ca-Pv and Mg-Pv are 13.8 GPa, 14...

Research paper thumbnail of TEM observation in the samples of high-pressure in-situ IR experiments

Japan Geoscience Union, 2018

Research paper thumbnail of High-pressure and temperature experiment using Kawai-type apparatus for triaxial deformation

Research paper thumbnail of tuite determined by in situ X-ray diffraction in a 2 large-volume high-pressure apparatus 3

16 Tuite, γ-Ca3(PO4)2, is regarded as an important phosphate mineral in the deep 17 mantle as a h... more 16 Tuite, γ-Ca3(PO4)2, is regarded as an important phosphate mineral in the deep 17 mantle as a host for rare earth elements and large ion lithophile elements, and also for 18 phosphorus. The thermoelastic properties of synthetic γ-Ca3(PO4)2 have been 19 determined at simultaneously high pressures and temperatures of up to 35.4 GPa and 2

Research paper thumbnail of The pressure and thickness of the post-spinel transition in (Mg,Fe)2SiO4 explaining the sharp 660-km discontinuity

Research paper thumbnail of 三軸変形川井型装置による下部マントル条件での(Mg,Fe)SiO3-ペロブスカイトの変形実験

Research paper thumbnail of New results of the post-spinel transition pressure in Mg 2 SiO 4 by means of in-situ X-ray diffraction in a multi-anvil press: complete agreement with the 660-km discontinuity depth

Research paper thumbnail of Crystallographic-preferred-orientation of (Mg,Fe)SiO 3 -bridgmanite : implications for the mantle dynamics in the lower mantle

Research paper thumbnail of Phase transition of wadsleyite-ringwoodite in the Mg2SiO4-Fe2SiO4 system

American Mineralogist, 2019

Research paper thumbnail of Sharp 660-km discontinuity controlled by extremely narrow binary post-spinel transition

Research paper thumbnail of Single-crystal elasticity of (Al,Fe)-bearing bridgmanite and seismic shear wave radial anisotropy at the topmost lower mantle

Earth and Planetary Science Letters, 2019

Research paper thumbnail of Generation of pressures over 40 GPa using Kawai-type multi-anvil press with tungsten carbide anvils

Review of Scientific Instruments, 2016

We have generated over 40 GPa pressures, namely, 43 and 44 GPa, at ambient temperature and 2000 K... more We have generated over 40 GPa pressures, namely, 43 and 44 GPa, at ambient temperature and 2000 K, respectively, using Kawai-type multi-anvil presses (KMAP) with tungsten carbide anvils for the first time. These high-pressure generations were achieved by combining the following pressure-generation techniques: (1) precisely aligned guide block systems, (2) high hardness of tungsten carbide, (3) tapering of second-stage anvil faces, (4) materials with high bulk modulus in a high-pressure cell, and (5) high heating efficiency.

Research paper thumbnail of Effect of cation substitution on bridgmanite elasticity: A key to interpret seismic anomalies in the lower mantle

Scientific Reports, 2016

Seismological observations show that, in some regions of the lower mantle, an increase in bulk so... more Seismological observations show that, in some regions of the lower mantle, an increase in bulk sound velocity, interestingly, occurs in the same volume where there is a decrease in shear velocity. We show that this anti-correlated behavior occurs on cation substitution in bridgmanite by making single crystal elasticity measurements of MgSiO3 and (Mg,Fe,Al)(Si,Al)O3 using inelastic x-ray scattering in the ambient conditions. Cation substitution of ferrous iron and aluminum may explain large low shear velocity provinces in the lower mantle.

Research paper thumbnail of Mantle dynamics inferred from the crystallographic preferred orientation of bridgmanite

Nature, Nov 3, 2016

Seismic shear wave anisotropy is observed in Earth's uppermost lower mantle around several su... more Seismic shear wave anisotropy is observed in Earth's uppermost lower mantle around several subducted slabs. The anisotropy caused by the deformation-induced crystallographic preferred orientation (CPO) of bridgmanite (perovskite-structured (Mg,Fe)SiO3) is the most plausible explanation for these seismic observations. However, the rheological properties of bridgmanite are largely unknown. Uniaxial deformation experiments have been carried out to determine the deformation texture of bridgmanite, but the dominant slip system (the slip direction and plane) has not been determined. Here we report the CPO pattern and dominant slip system of bridgmanite under conditions that correspond to the uppermost lower mantle (25 gigapascals and 1,873 kelvin) obtained through simple shear deformation experiments using the Kawai-type deformation-DIA apparatus. The fabrics obtained are characterized by [100] perpendicular to the shear plane and [001] parallel to the shear direction, implying that t...