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| Thermodynamic and Elastic Properties of Magnesite at Mantle Conditions: First-Principles Calculations | |
Yao, Chao1,2; Wu, Zhongqing1,2; Zou, Fan1,2; Sun, Weidong3,4,5
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| 2018-08-01 | |
| Source Publication | GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
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| ISSN | 1525-2027 |
| Volume | 19Issue:8Pages:2719-2731 |
| Corresponding Author | Wu, Zhongqing(wuzq10@ustc.edu.cn) |
| Abstract | 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. |
| DOI | 10.1029/2017GC007396 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 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 Research Area | Geochemistry & Geophysics |
| WOS Subject | Geochemistry & Geophysics |
| WOS ID | WOS:000452122500025 |
| Publisher | AMER GEOPHYSICAL UNION |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qdio.ac.cn/handle/337002/155772 |
| Collection | 深海极端环境与生命过程研究中心 |
| Corresponding Author | Wu, Zhongqing |
| Affiliation | 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 |
| Recommended Citation 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. |
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