2014 Fiscal Year Final Research Report
The mechanism of stable isotope fractionation of heavy elements and its application to granite petrogenesis
| Project/Area Number |
24540527
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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 |
Geochemistry/Astrochemistry
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| Research Institution | Kwansei Gakuin University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
ASAHARA Yoshihiro 名古屋大学, 大学院環境学研究科, 助教 (10281065)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Keywords | 安定同位体 / 花崗岩 / ストロンチウム |
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| Outline of Final Research Achievements |
The Tadamigawa granitic rocks was studied as a case study to understand the mechanism of stable isotope fractionation of heavy elements within the igneous rocks. Systematic strontium stable isotope analyses were carried out with the use of double spike TIMS technique. The age of the Tadamigawa granitic pluton is c. 100 Ma and it may be derived from a single parental magma by fractional crystallization. The stable isotopic ratios of strontium within the Tadamigawa granitic rocks show a large variation. The fractionation of Sr stable isotopes of igneous rocks may be caused by the differentiation of plagioclase in the magma chamber.
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| Free Research Field |
岩石学
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