Mineral crystal chemistry as a function of temperature and pressure: anisotropy of elasticity in the Earth's interior elucidated from atomic displacement behavior
| Project/Area Number |
15K05344
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Petrology/Mineralogy/Economic geology
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| Research Institution | Yamaguchi University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
藤原 惠子 山口大学, 大学院創成科学研究科, 助手 (50253175)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 単結晶X線構造解析 / 地球内部物質 / 原子変位 / デバイ温度 / ポテンシャルパラメータ / 弾性波速度 |
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| Outline of Final Research Achievements |
This is a research with the aim of elucidating phenomena in the Earth’s interior by obtaining knowledge of elastic properties and structural stabilities of Earth’s-interior-related materials. We determined the anisotropic Debye temperatures and potentials in analogs of Earth’s lower mantle materials and estimated the magnitude of their interatomic interactions to obtain detailed knowledge of their elastic properties and structural stabilities. In particular, it is inferred from the findings on CaGeO3 perovskite that MgSiO3 bridgmanite may transform to a perovskite phase with a different symmetry from Pbnm structure in the Earth’s lower mantle before the transition to the post-perovskite type structure.
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Report
(4 results)
Research Products
(53 results)
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[Presentation] Structure Refinements and Hydrogen Atom Positions of Parasymplesite from Ohita and Vivianite from Nara, Japan2016
Author(s)
K. Han, Y. Miyano, H. Hongu, A. Yoshiasa, K. Sugiyama, M. Okube, H. Arima, A. Nakatsuka, K. Momma and R. Miyawaki
Organizer
14th Conference of the Asian Crystallographic Association (AsCA2016)
Place of Presentation
Hanoi, Vietnam
Year and Date
2016-12-06
Related Report
Int'l Joint Research
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[Presentation] The Crystal Structure Refinement and Distorted Cu-sites of Clinoclase, Cu3AsO4(OH)3 from Ikuchi, Hiroshima2016
Author(s)
A. Umayahara, H. Hongu, A. Yoshiasa, K. Sugiyama, M. Okube, H. Arima, A. Nakatsuka, K. Momma and R. Miyawaki
Organizer
14th Conference of the Asian Crystallographic Association (AsCA2016)
Place of Presentation
Hanoi, Vietnam
Year and Date
2016-12-06
Related Report
Int'l Joint Research
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[Presentation] Phase relations of CuBr under high pressure and temperature2016
Author(s)
O. Ohtaka, Y. Yasuhiro, A. Morimoto, A. Yoshiasa, T. Tobase, A. Nakatsuka, T. Kikegawa, A. Suzuki, H. Arima and H. Saitoh
Organizer
European High Pressure Research Group International Meeting on High Pressure Science and Technology (EHPRG54)
Place of Presentation
Bayreuth, Germany
Year and Date
2016-09-06
Related Report
Int'l Joint Research
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