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Advances in Earth Science  2017, Vol. 32 Issue (5): 465-480    DOI: 10.11867/j.issn.1001-8166.2017.05.0465
    
Recent Advance and Prospects in the Structure and Thermal Elastic Properties of Lower Mantle Minerals
Liao Yifan, Sun Ningyu, Mao Zhu*
School of Earth and Space Sciences, University of Science and Techonology of China, Hefei 230026, China
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Abstract  Lower mantle, ranging from 660 km to 2 890 km depth, occupies 49.2% of the Earth by mass and is at extremely high pressure and temperature conditions. Experimental studies on the physical properties of the lower mantle minerals, particular the structure, density, and sound velocity, etc., are important to understand the structure, composition, and dynamic behavior of the region. Here we summarize the recent experimental results on the structure and thermal equation of states of the lower mantle minerals, including bridgmanite, ferropericlase, CaSiO3-perovskite, and silicate post-perovskite, and discuss the effect of pressure, temperature, composition, and Fe-spin transition on the density and bulk sound velocity of those minerals. This review aims to provide new insights into the lower-mantle structure and chemistry and help to understand the observed velocity anomalies in the lower mantle.
Key words:  Structure      Density      Lower mantle high pressure-temperature condition      Bulk sound velocity.      Thermal equation of state     
Received:  11 October 2016      Published:  20 May 2017
ZTFLH:  P31  
Fund: Project supported by the National Natural Science Foundation of China “Geophysics”(No.41522403)
Corresponding Authors:  Mao Zhu(1982-), female, Chongqing City, Professor. Research areas include physical properties in the Earth interior.E-mail:zhumao@ustc.edu.cn   
About author:  Liao Yifan(1993-), male, Qionglai City, Sichuan Province, Master student. Research areas include physical properties in the Earth interior.E-mail:lyfan123@mail.ustc.edu.cn
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Liao Yifan
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Sun Ningyu

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Liao Yifan, Sun Ningyu, Mao Zhu. Recent Advance and Prospects in the Structure and Thermal Elastic Properties of Lower Mantle Minerals. Advances in Earth Science, 2017, 32(5): 465-480.

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http://www.adearth.ac.cn/EN/10.11867/j.issn.1001-8166.2017.05.0465     OR     http://www.adearth.ac.cn/EN/Y2017/V32/I5/465

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