Инд. авторы:	Ohtani E., Amaike Y., Kamada S., Sakamaki T., Hirao N.
Заглавие:	Stability of hydrous phase H MgSiO4H2 under lower mantle conditions
Библ. ссылка:	Ohtani E., Amaike Y., Kamada S., Sakamaki T., Hirao N. Stability of hydrous phase H MgSiO4H2 under lower mantle conditions // Geophysical Research Letters. - 2014. - Vol.41. - Iss. 23. - P.8283-8287. - ISSN 0094-8276. - EISSN 1944-8007.
Внешние системы:	DOI: 10.1002/2014GL061690; РИНЦ: 24030287; РИНЦ: 24030287; SCOPUS: 2-s2.0-84921541002; WoS: 000348462000019;
Реферат:	eng: We report the stability field of a new high-pressure hydrous phase, phase H MgSiO4H2, and its implications for water transport into the deep lower mantle. We observed the existence of hydrous phase H at pressures around 50 GPa, and this phase was stable up to 60 GPa. Our results, together with those of previous works, indicate that pure phase H MgSiO4H2 has a very narrow stability field in the pressure range 35 < P < 60 GPa, equivalent to the uppermost part of the lower mantle. The stability field expands significantly toward higher pressures and temperatures on dissolution of the hydrous AlOOH component. The hydrous phase H-phase δ solid solution (aluminous phase H), (MgSi,Al2)O4H2, is potentially the most important hydrous phase present under the deep lower mantle conditions. © 2014. American Geophysical Union. All Rights Reserved.
Ключевые слова:	phase equilibrium; lower mantle; high pressure; groundwater flow; dissolution; Phase stability; Water transport; Pressure ranges; New high; Lower mantle condition; Lower mantle; Hydrous phase; DHMS; Aluminous phase; Water; water; stability field; lower mantle; hydrous phase H; DHMS; water flow;
Издано:	2014
Физ. характеристика:	с.8283-8287