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Anhydrous alteration of Allende chondrules in the solar nebula III: Alkali-zoned chondrules and heating experiments for anhydrous alteration
https://doi.org/10.15094/00004700
https://doi.org/10.15094/000047005f2ce353-3f69-4720-bda1-46d0829aaef4
名前 / ファイル | ライセンス | アクション |
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KJ00000036506 (1.7 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1996-03-01 | |||||
タイトル | ||||||
タイトル | Anhydrous alteration of Allende chondrules in the solar nebula III: Alkali-zoned chondrules and heating experiments for anhydrous alteration | |||||
言語 | ||||||
言語 | eng | |||||
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 | 10.15094/00004700 | |||||
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) | |||||
著者名(英) |
Ikeda, Yukio
× Ikeda, Yukio× Kimura, Makoto |
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著者所属(英) | ||||||
en | ||||||
Department of Earth Sciences, Ibaraki University | ||||||
著者所属(英) | ||||||
en | ||||||
Department of Earth Sciences, Ibaraki University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The groundmass of some chondrules in Allende shows chemical zonation from alkali-poor and CaO-rich cores to alkali-rich and CaO-poor rims, and the zonation was defined to be original groundmass (zone I), continuous zoning region (zone II), and discontinuously high-Na and low-Ca zone (zone III). The zonation was formed after chondrule solidification and prior to accretion on the Allende parent body, and was probably produced by reactions with an oxidized nebular gas in equilibrium with nepheline, sodalite, high-Ca pyroxene, and ferroan olivine. Heating experiments using synthetic glass beads were conducted, and zonation similar to the alkali-zoned chondrules was formed. The experimental results suggests that the reaction temperature and duration for the Allende alkali-zoned chondrules were about 600°-400℃ and 1-10^4 years, respectively. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10784627 | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Antarctic Meteorites 巻 9, p. 51-68, 発行日 1996-03 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |