2017 Fiscal Year Final Research Report
Superplasticity of minerals 2
| Project/Area Number |
26247087
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Petrology/Mineralogy/Economic geology
|
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| Research Institution | The University of Tokyo |
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Principal Investigator |
|
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| Project Period (FY) |
2014-04-01 – 2018-03-31
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| Keywords | 超塑性 / マントル / 地震波速度異方性 |
|---|
| Outline of Final Research Achievements |
Grain boundary migration, grain boundary sliding, rigid-body grain rotation and grain-neighbor switching occur during diffusion creep. We show that grain boundary sliding during diffusion creep induces grains to rotate. Preferential grain boundary sliding on low-viscosity boundaries results in the development of crystallographic preferred orientation. Finally, diffusion creep (superplastic) Earth hypothesis is proposed.
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| Free Research Field |
岩石・鉱物物理
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