| Project/Area Number |
16K13910
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Geochemistry/Cosmochemistry
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| Research Institution | The University of Tokyo |
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Principal Investigator |
Iizuka Tsuyoshi 東京大学, 大学院理学系研究科(理学部), 准教授 (70614569)
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| Co-Investigator(Kenkyū-buntansha) |
三河内 岳 東京大学, 大学院理学系研究科(理学部), 准教授 (30272462)
小澤 一仁 東京大学, 大学院理学系研究科(理学部), 教授 (90160853)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | ウランー鉛年代 / 超塩基性岩 / 輝石 / 隕石 / ウランー鉛 / プラズマイオン源質量分析法 / マントル |
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| Outline of Final Research Achievements |
Precise and accurate chronological information on rock samples is essential to decode the early evolution of our solar system. In this study, we have developed acid washing method for high-precision U-Pb dating of pyroxenes. The developed acid washing method can remove non-radiogenic Pb from pyroxenes, resulting in the improvements of precision and accuracy of U-Pb dating. This method has been applied to terrestrial and meteoritic samples with mafic to ultramafic compositions. The results reveal the versatility of the dating technique.
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