2014 Fiscal Year Final Research Report
Study of Chondrule Formation Processes: An Approach Combining Theoretical Calculations and Measurements of Shape, Composition, and Texture of Chondrules
| Project/Area Number |
24340102
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Solid earth and planetary physics
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
YOKOYAMA Tetsuya 東京工業大学, 大学院理工学研究科, 准教授 (00667028)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | コンドリュール / 成因 / 形状 / 組成 / 組織 / 惑星系形成 / 原始惑星系円盤 |
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| Outline of Final Research Achievements |
We have investigated the external shape and internal structure of chondrules contained in Allende meteorite, to reveal the chondrule formation mechanism. We measured about 100 chondrules and found 15 chondrules, which can be considered to be completely molten once. We compare the obtained relationship between the size and the shape of those chondrules with the theoretical relation that is obtained assuming the gas-frictional heating. Then, we have found that those two relations are consistent each other. This implies that the chondrules in Allende meteorite were exposed to the gas flow when they were molten.
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| Free Research Field |
惑星科学
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