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DOI | 10.1029/2020GL087607 |
Effect of Water on Lattice Thermal Conductivity of Ringwoodite and Its Implications for the Thermal Evolution of Descending Slabs | |
Marzotto, Enrico1; Hsieh, Wen-Pin2,3; Ishii, Takayuki1; Chao, Keng-Hsien2; Golabek, Gregor J.1; Thielmann, Marcel1; Ohtani, Eiji4 | |
2020-05-24 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Taiwan; Japan |
英文摘要 | The presence of water in minerals generally alters their physical properties. Ringwoodite is the most abundant phase in the lowermost mantle transition zone and can host up to 1.5-2 wt% water. We studied high-pressure lattice thermal conductivity of dry and hydrous ringwoodite by combining diamond-anvil cell experiments with ultrafast optics. The incorporation of 1.73 wt% water substantially reduces the ringwoodite thermal conductivity by more than 40% at mantle transition zone pressures. We further parameterized the ringwoodite thermal conductivity as a function of pressure and water content to explore the large-scale consequences of a reduced thermal conductivity on a slab's thermal evolution. Using a simple 1-D heat diffusion model, we showed that the presence of hydrous ringwoodite in the slab significantly delays decomposition of dense hydrous magnesium silicates, enabling them to reach the lower mantle. Our results impact the potential route and balance of water cycle in the lower mantle. |
英文关键词 | hydrous ringwoodite lattice thermal conductivity mantle transition zone water cycle |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000551465400053 |
WOS关键词 | MANTLE TRANSITION ZONE ; PHASE-TRANSFORMATIONS ; STAGNANT SLAB ; OLIVINE ; WADSLEYITE ; DEHYDRATION ; SUBDUCTION ; PRESSURES ; GPA ; BRIDGMANITE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/270404 |
专题 | 气候变化 |
作者单位 | 1.Univ Bayreuth, Bayer Geoinst, Bayreuth, Germany; 2.Acad Sinica, Inst Earth Sci, Taipei, Taiwan; 3.Natl Taiwan Univ, Dept Geosci, Taipei, Taiwan; 4.Tohoku Univ, Grad Sch Sci, Sendai, Miyagi, Japan |
推荐引用方式 GB/T 7714 | Marzotto, Enrico,Hsieh, Wen-Pin,Ishii, Takayuki,et al. Effect of Water on Lattice Thermal Conductivity of Ringwoodite and Its Implications for the Thermal Evolution of Descending Slabs[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(13). |
APA | Marzotto, Enrico.,Hsieh, Wen-Pin.,Ishii, Takayuki.,Chao, Keng-Hsien.,Golabek, Gregor J..,...&Ohtani, Eiji.(2020).Effect of Water on Lattice Thermal Conductivity of Ringwoodite and Its Implications for the Thermal Evolution of Descending Slabs.GEOPHYSICAL RESEARCH LETTERS,47(13). |
MLA | Marzotto, Enrico,et al."Effect of Water on Lattice Thermal Conductivity of Ringwoodite and Its Implications for the Thermal Evolution of Descending Slabs".GEOPHYSICAL RESEARCH LETTERS 47.13(2020). |
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