M
Masaaki Miyahara
Researcher at Hiroshima University
Publications - 106
Citations - 1699
Masaaki Miyahara is an academic researcher from Hiroshima University. The author has contributed to research in topics: Chondrite & Meteorite. The author has an hindex of 22, co-authored 101 publications receiving 1395 citations. Previous affiliations of Masaaki Miyahara include Tohoku University.
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Journal ArticleDOI
Stability of a hydrous δ-phase, AlOOH–MgSiO2(OH)2, and a mechanism for water transport into the base of lower mantle
Itaru Ohira,Eiji Ohtani,Eiji Ohtani,Takeshi Sakai,Takeshi Sakai,Masaaki Miyahara,Naohisa Hirao,Yasuo Ohishi,Masahiko Nishijima +8 more
TL;DR: In this article, a new reaction between aluminous perovskite and water was reported to form alumina-depleted perovsite and hydrous δ-phase AlOOH-MgSiO2(OH)2 along the mantle geotherm in the lower mantle.
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Partitioning of oxygen between the Earth's mantle and core
Daniel J. Frost,Yuki Asahara,David C. Rubie,Nobuyoshi Miyajima,Leonid Dubrovinsky,Christian Holzapfel,Eiji Ohtani,Masaaki Miyahara,Takeshi Sakai +8 more
TL;DR: In this article, the results of multianvil experiments to measure the oxygen contents of coexisting immiscible metallic and ionic liquids in the Fe-FeO system were performed up to 25 GPa.
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High-pressure minerals in shocked meteorites
Naotaka Tomioka,Masaaki Miyahara +1 more
TL;DR: A review and summary of the findings on natural high-pressure minerals in shocked meteorites that have been reported over the past 50 years is given in this article, where the authors show that their formation pressures are limited to the pressure range up to ~25 GPa.
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Shock-induced deformation of Shergottites: Shock-pressures and perturbations of magmatic ages on Mars
Ahmed El Goresy,Ph. Gillet,Masaaki Miyahara,Eiji Ohtani,Shin Ozawa,Pierre Beck,Gilles Montagnac +6 more
TL;DR: In this paper, the authors cast considerable doubt on using the refractive index (RI) or cathodoluminescence (CL) spectra of maskelynite, in estimating the magnitudes of peak-shock pressure in both shergottites and ordinary chondrites.
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Melting relationships in the Fe-Fe3S system up to the outer core conditions
Seiji Kamada,Seiji Kamada,Eiji Ohtani,Hidenori Terasaki,Takeshi Sakai,Masaaki Miyahara,Yasuo Ohishi,Naohisa Hirao +7 more
TL;DR: In situ X-ray diffraction experiments in the Fe-Fe 3 S system were performed up to 175 GPa and 3500 K using a laser-heated diamond anvil cell to investigate melting relationships in the system as discussed by the authors.