DOI: 10.1002/2014GL061690
论文题名: Stability of hydrous phase H MgSiO4H2 under lower mantle conditions
作者: Ohtani E. ; Amaike Y. ; Kamada S. ; Sakamaki T. ; Hirao N.
刊名: Geophysical Research Letters
ISSN: 0094-9505
EISSN: 1944-9236
出版年: 2014
卷: 41, 期: 23 起始页码: 8283
结束页码: 8287
语种: 英语
英文关键词: DHMS
; hydrous phase H
; lower mantle
; stability field
; water
Scopus关键词: Water
; Aluminous phase
; DHMS
; Hydrous phase
; Lower mantle
; Lower mantle condition
; New high
; Pressure ranges
; Water transport
; Phase stability
; dissolution
; groundwater flow
; high pressure
; lower mantle
; phase equilibrium
; water flow
英文摘要: 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. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84921541002&doi=10.1002%2f2014GL061690&partnerID=40&md5=ce44e406bbe91e2e9d9507db81abb33c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6769
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth and Planetary Material Sciences, Tohoku University, Sendai, Japan
Recommended Citation:
Ohtani E.,Amaike Y.,Kamada S.,et al. Stability of hydrous phase H MgSiO4H2 under lower mantle conditions[J]. Geophysical Research Letters,2014-01-01,41(23).