globalchange  > 气候变化与战略
DOI: 10.1016/j.epsl.2021.116755
论文题名:
Independent hydrogen incorporation in wadsleyite from oxygen fugacity and non-dissociation of H2O in the reducing mantle transition zone
作者: Druzhbin D.; Fei H.; Katsura T.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2021
卷: 557
语种: 英语
中文关键词: mantle transition zone ; oxygen fugacity ; wadsleyite ; water solubility
英文关键词: Dissociation ; Hafnium oxides ; Hydrogen ; Molybdenum oxide ; Oxygen ; Reservoirs (water) ; Rhenium compounds ; Solubility ; Earth's interior ; Hydrogen incorporation ; Mantle transition zone ; Oxygen fugacity ; Reducing conditions ; Ringwoodite ; Wadsleyite ; Platinum compounds ; fugacity ; hydrogen ; mantle ; oxygen ; solubility ; transition zone ; wadsleyite ; water content
英文摘要: The mantle transition zone is considered as a potential water reservoir in the Earth's interior because of the high H2O solubility in wadsleyite and ringwoodite. However, this scenario is based on experiments performed under relatively oxidized conditions. In order to constrain the H2O solubility in minerals in the reducing (close to iron-wüstite buffer) mantle transition zone, here we systematically measured the water content in wadsleyite at 17 GPa and 1673 K, as a function of oxygen fugacity in the range of Hf-HfO2, Mo-MoO2, Re-ReO2, and Pt-PtO2 buffer conditions. The results suggest that the oxygen fugacity has no meaningful effect on H2O solubility in wadsleyite. Wadsleyite in the mantle transition zone can store as much as ∼1.0 wt.% H2O in spite of the reducing conditions. The dissociation of H2O into H2 and O2 is negligible, namely, there should be negligible molecular H2 in the mantle transition zone. © 2021 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165453
Appears in Collections:气候变化与战略

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作者单位: Bayerisches Geoinstitut, Universität Bayreuth, Bayreuth, D95440, Germany; Center for High Pressure Science and Technology Advanced Research, Beijing, 100097, China

Recommended Citation:
Druzhbin D.,Fei H.,Katsura T.. Independent hydrogen incorporation in wadsleyite from oxygen fugacity and non-dissociation of H2O in the reducing mantle transition zone[J]. Earth and Planetary Science Letters,2021-01-01,557
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