Investigations on the effects of flow on texture development of magmas
| Project/Area Number |
22740343
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Petrology/Mineralogy/Science of ore deposit
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| Research Institution | Shizuoka University (2012)
The University of Tokyo (2010-2011) |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2011: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | マグマ / レオロジー / 結晶作用 / 粘性率 / 斜長石 / 伊豆大島火山 / 桜島火山 / 非ニュートン流体 / 岩石組織 / 結晶組織 / 噴火様式 / 粘性係数 / 富士火山 / 降伏応力 / 溶岩ドーム噴火 / Einstein-Roscoe式 / マグマ混合 |
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| Research Abstract |
Crystallization and viscosity measurement experiments were performed for magmas at high temperature conditions to quantitatively examine the effects of suspended crystals on viscosities of magmas. Based on the experiments, the equations to describe viscosities of lavas from the Izu-Oshima and the Sakurajima volcanoes were established as functions of temperature and crystal volume fraction, and also the effects of tabular plagioclase crystals on rheological behaviors of magmas were clarified. These results made us to note the problem of using the existing viscosity equation for crystal-rich magma and the importance of time-series development of magma texture through crystallization.
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Report
(4 results)
Research Products
(44 results)
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[Journal Article] Thermal structure beneath Far Eastern Russia inferred from geothermobarametric analyses of mantle xenoliths: direct evidence for high geothermal gradient in backarc lithosphere2012
Author(s)
Yamamoto, J., Nishimura, K., Ishibashi, H., Kagi, H., Arai, S. and Prikhod’ko, V.S.
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Journal Title
Tectonophysics
Volume: 554-557
Pages: 74-82
DOI
Related Report
Peer Reviewed
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