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Variable initial zoning profiles and Fe-Mg diffusion coefficients for olivine: Effects on cooling rates calculated by diffusion modeling in a pallasite
https://doi.org/10.15094/00006054
https://doi.org/10.15094/0000605442b17ef7-a0cd-4a29-91a1-3180e4b51b66
名前 / ファイル | ライセンス | アクション |
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2004-09-01 | |||||
タイトル | ||||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | diffusion, pallasite, olivine, cooling rate, chemical zoning | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ID登録 | ||||||
ID登録 | 10.15094/00006054 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
論文名よみ | ||||||
その他のタイトル | Variable initial zoning profiles and Fe-Mg diffusion coefficients for olivine: Effects on cooling rates calculated by diffusion modeling in a pallasite | |||||
著者名(英) |
Miyamoto,Masamichi
× Miyamoto,Masamichi× Monkawa,Akira× Koizumi,Eisuke× Mikouchi,Takashi |
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著者所属(英) | ||||||
en | ||||||
Space and Planetary Science, Graduate School of Science,University of Tokyo/Space and Planetary Science, Graduate School of Science,University of Tokyo/Space and Planetary Science, Graduate School of Science,University of Tokyo/Space and Planetary Science, Graduate School of Science,University of Tokyo | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Because chemical zoning of minerals contains information about the thermal history of the parent body, the cooling rate or burial depth can be calculated by solving the diffusion equation. Several factors influence the results of these calculations. We evaluated the cooling rate (and burial depth) calculated by using different initial (starting) zoning profiles and different diffusion coefficients on the basis of the Fe-Mg chemical zoning profile observed for pallasite (Esquel) olivine. Uncertainties in initial compositional profile and Fe-Mg diffusion coefficient in olivine both lead to error in model cooling rates. Discrepancies between different experimentally determined diffusion coefficients lead to uncertainties in model cooling rate that exceed those due to initial zoning profiles by one order of magnitude. These results highlight the need for accurate determination of diffusion coefficients in olivine. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11182426 | |||||
書誌情報 |
Antarctic meteorite research 巻 17, p. 252-258, 発行日 2004-09 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |