Thermodynamic and Elastic Properties of Magnesite at Mantle Conditions: First-Principles Calculations
文献类型：期刊论文
| 作者 | Yao, Chao1,2; Wu, Zhongqing1,2; Zou, Fan1,2; Sun, Weidong3,4,5
|
| 刊名 | GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
 |
| 出版日期 | 2018-08-01 |
| 卷号 | 19期号:8页码:2719-2731 |
| ISSN号 | 1525-2027 |
| DOI | 10.1029/2017GC007396 |
| 通讯作者 | Wu, Zhongqing(wuzq10@ustc.edu.cn) |
| 英文摘要 | Magnesite (MgCO3) is a likely main host of carbonates in the mantle and plays an important role in the transport and storage of carbon in the Earth's mantle. Its physical properties at high pressure and high temperature (PT) are crucial for understanding the deep carbon cycle. Here we investigated thermodynamic and elastic properties of magnesite under the mantle PT conditions using first-principles calculations with local density approximation (LDA). Magnesite has the seismic velocities close to those of forsterite. The effect of the magnesite on seismic velocity of the carbonated peridotite and eclogite is subtle in the upper mantle. However, magnesite has much smaller seismic velocities and far larger elastic anisotropy than major minerals in the transition zone and lower mantle. The enrichment of magnesite in the transition zone and lower mantle will likely produce seismically detectable low-velocity zone and velocity anisotropy. |
| 资助项目 | Strategic Priority Research Program (B) of Chinese Academy of Sciences[XDB18000000] ; State Key Development Program of Basic Research of China[2014CB845905] ; National Natural Science Foundation of China[41721002] ; Fundamental Research Funds for the Central Universities[WK2080000078] ; Special Program for Applied Research on Super Computation of the NSFC-Guangdong Joint Fund (the second phase)[U1501501] ; China Scholarship Council (CSC)[201506340051] |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000452122500025 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/155772]  |
| 专题 | 海洋研究所_深海极端环境与生命过程研究中心 |
| 通讯作者 | Wu, Zhongqing |
| 作者单位 | 1.Univ Sci & Technol China, Sch Earth & Space Sci, Lab Seismol & Phys Earths Interior, Hefei, Anhui, Peoples R China 2.Univ Sci & Technol China, Sch Earth & Space Sci, Mengcheng Natl Geophys Observ, Hefei, Anhui, Peoples R China 3.Chinese Acad Sci, Inst Oceanog, Ctr Deep Sea Res, Qingdao, Peoples R China 4.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Mineral Resources, Qingdao, Peoples R China 5.Chinese Acad Sci, CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yao, Chao,Wu, Zhongqing,Zou, Fan,et al. Thermodynamic and Elastic Properties of Magnesite at Mantle Conditions: First-Principles Calculations[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2018,19(8):2719-2731. |
| APA | Yao, Chao,Wu, Zhongqing,Zou, Fan,&Sun, Weidong.(2018).Thermodynamic and Elastic Properties of Magnesite at Mantle Conditions: First-Principles Calculations.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,19(8),2719-2731. |
| MLA | Yao, Chao,et al."Thermodynamic and Elastic Properties of Magnesite at Mantle Conditions: First-Principles Calculations".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 19.8(2018):2719-2731. |
入库方式： OAI收割
来源：海洋研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。