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DOI | 10.1029/2018GL080740 |
Kinetic Control on the Depth Distribution of Superdeep Diamonds | |
Zhu, Feng1,2; Li, Jie1; Liu, Jiachao1,3; Lai, Xiaojing2,4; Chen, Bin2; Meng, Yue5 | |
2019-02-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:4页码:1984-1992 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Superdeep diamonds contain unique information from the sublithospheric regions of Earth's interior. Recent studies suggest that reaction between subducted carbonate and iron metal in the mantle plays an important role in the production of superdeep diamonds. It is unknown if this reaction is kinetically feasible in cold slabs subducted into the deep mantle. Here we present experimental data on real-time tracking of the magnesite-iron reaction at high pressures and high temperatures to demonstrate the production of diamond at the surface conditions of cold slabs in the transition zone and lower mantle. Our data reveal that the diamond production rate has a positive temperature dependence and a negative pressure dependence, and along a slab geotherm it decreases by a factor of three at pressures from 14.4 to 18.4 GPa. This rate reduction provides an explanation for the rarity of superdeep diamonds from the interior of the mantle transition zone. |
英文关键词 | superdeep diamond slab-mantle interaction redox reaction reaction kinetics |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000461855600011 |
WOS关键词 | PHASE-TRANSFORMATIONS ; DEEP MANTLE ; IRON ; CARBON ; PRESSURE ; LITHOSPHERE ; INCLUSIONS ; PARAMETERS ; REDUCTION ; STABILITY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/26302 |
专题 | 气候变化 |
作者单位 | 1.Univ Michigan, Dept Earth & Environm Sci, Ann Arbor, MI 48109 USA; 2.Univ Hawaii Manoa, Hawaii Inst Geophys & Planetol, Honolulu, HI 96822 USA; 3.Univ Texas Austin, Dept Geol Sci, Jackson Sch Geosci, Austin, TX USA; 4.Univ Hawaii Manoa, Dept Geol & Geophys, Honolulu, HI 96822 USA; 5.Argonne Natl Lab, Xray Sci Div, HPCAT, 9700 S Cass Ave, Argonne, IL 60439 USA |
推荐引用方式 GB/T 7714 | Zhu, Feng,Li, Jie,Liu, Jiachao,et al. Kinetic Control on the Depth Distribution of Superdeep Diamonds[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(4):1984-1992. |
APA | Zhu, Feng,Li, Jie,Liu, Jiachao,Lai, Xiaojing,Chen, Bin,&Meng, Yue.(2019).Kinetic Control on the Depth Distribution of Superdeep Diamonds.GEOPHYSICAL RESEARCH LETTERS,46(4),1984-1992. |
MLA | Zhu, Feng,et al."Kinetic Control on the Depth Distribution of Superdeep Diamonds".GEOPHYSICAL RESEARCH LETTERS 46.4(2019):1984-1992. |
条目包含的文件 | 条目无相关文件。 |
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