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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
2018-08-01
Source PublicationGEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
ISSN1525-2027
Volume19Issue:8Pages:2719-2731
Corresponding AuthorWu, Zhongqing(wuzq10@ustc.edu.cn)
AbstractMagnesite (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.
DOI10.1029/2017GC007396
Indexed BySCI
Language英语
Funding ProjectStrategic 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 AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000452122500025
PublisherAMER GEOPHYSICAL UNION
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/155772
Collection深海极端环境与生命过程研究中心
Corresponding AuthorWu, Zhongqing
Affiliation1.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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