Stability of hydrous silicate at high pressures and water transport to the deep lower mantle

2014 ◽  
Vol 7 (3) ◽  
pp. 224-227 ◽  
Author(s):  
M. Nishi ◽  
T. Irifune ◽  
J. Tsuchiya ◽  
Y. Tange ◽  
Y. Nishihara ◽  
...  
Keyword(s):  
Water Transport ◽  
Lower Mantle ◽  
High Pressures ◽  
Hydrous Silicate

scholarly journals The Electrical Conductivity of Liebermannite: Implications for Water Transport Into the Earth's Lower Mantle

2020 ◽  
Vol 125 (8) ◽  
Author(s):  
Geeth Manthilake ◽  
Federica Schiavi ◽  
Chengcheng Zhao ◽  
Mainak Mookherjee ◽  
Mohamed Ali Bouhifd ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Water Transport ◽  
Lower Mantle

Hydrogen solubility in Al-rich stishovite and water transport to the lower mantle

2006 ◽  
Vol 70 (18) ◽  
pp. A362
Author(s):  
K.D. Litasov ◽  
E. Ohtani ◽  
H. Kagi ◽  
D.L. Lakshtanov ◽  
J.D. Bass
Keyword(s):  
Water Transport ◽  
Lower Mantle ◽  
Hydrogen Solubility

scholarly journals Neutron diffraction study of hydrous phase G: Hydrogen in the lower mantle hydrous silicate, phase G

2001 ◽  
Vol 28 (20) ◽  
pp. 3987-3990 ◽  
Author(s):  
Akio Suzuki ◽  
Eiji Ohtani ◽  
Tadashi Kondo ◽  
Takahiro Kuribayashi ◽  
Nobuo Niimura ◽  
...  
Keyword(s):  
Neutron Diffraction ◽  
Diffraction Study ◽  
Lower Mantle ◽  
Neutron Diffraction Study ◽  
Silicate Phase ◽  
Hydrous Silicate ◽  
Hydrous Phase

scholarly journals A new hydrous silicate, a water reservoir, in the upper part of the lower mantle

1997 ◽  
Vol 24 (9) ◽  
pp. 1047-1050 ◽  
Author(s):  
Eiji Ohtani ◽  
Hiroki Mizobata ◽  
Yasuhiro Kudoh ◽  
Toshiro Nagase ◽  
Haruo Arashi ◽  
...  
Keyword(s):  
Lower Mantle ◽  
Water Reservoir ◽  
Hydrous Silicate

scholarly journals The sound velocity of wüstite at high pressures: implications for low-velocity anomalies at the base of the lower mantle

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Ryosuke Tanaka ◽  
Tatsuya Sakamaki ◽  
Eiji Ohtani ◽  
Hiroshi Fukui ◽  
Seiji Kamada ◽  
...  
Keyword(s):  
Sound Velocity ◽  
Lower Mantle ◽  
High Pressures ◽  
Low Velocity ◽  
Velocity Anomalies

Oxygen Vacancies in Perovskite and Related Structures: Implications for the Lower Mantle

2002 ◽  
Vol 718 ◽  
Author(s):  
Catherine A. McCammon ◽  
Ana Isabel Becerro ◽  
Stefan Lauterbach ◽  
Ulrich Bläß ◽  
Stefan Marion ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Lower Mantle ◽  
Oxygen Vacancies ◽  
High Pressures ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Vacancy Ordering ◽  
High Pressures And Temperatures ◽  
Electron Energy Loss

AbstractThe oxygen vacancy ordering process and displacive transitions have been characterised in the system CaTiO3-CaFeO2.5 as a function of composition and temperature at atmospheric pressure using X-ray diffraction, Mössbauer spectroscopy, infrared spectroscopy, transmission electron microscopy, electron energy loss spectroscopy, neutron diffraction and electrical conductivity methods. With increasing concentration of vacancies the following sequence is observed: isolated defects → short defect chains → infinite chains in layers. Similar experiments at high pressures and temperatures have been conducted to determine the nature of oxygen vacancies in the lower mantle phases (Mg,Fe)(Si,Al)O3-σ and Ca(Si,Fe)O3-σ perovskite.

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