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Chromium isotopic composition of some chondritic meteorites
https://doi.org/10.15094/00005905
https://doi.org/10.15094/000059055ab99bde-adc2-4830-9da6-31d9fe639e0f
名前 / ファイル | ライセンス | アクション |
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KJ00000040897 (2.8 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1997-09-01 | |||||
タイトル | ||||||
タイトル | Chromium isotopic composition of some chondritic meteorites | |||||
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 | 10.15094/00005905 | |||||
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) |
Kano, Naoki
× Kano, Naoki× Yamakoshi, Kazuo× Imamura, Mineo |
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著者所属(英) | ||||||
en | ||||||
Institute for Cosmic Ray Research, University of Tokyo | ||||||
著者所属(英) | ||||||
en | ||||||
Institute for Cosmic Ray Research, University of Tokyo | ||||||
著者所属(英) | ||||||
en | ||||||
Institute for Nuclear Study, University of Tokyo | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The Cr isotopic composition of primitive meteorites (acid-residue fractions) was studied. Five chondrites were analyzed in this work [Allende (CV3), Murchison (CM2), Nuevo Mercurio (H5), La Criolla (L6), Qingzhen (EH3)]. Although in most samples, no isotopic anomalies beyond the experimental errors could be detected, an elevated ^<54>Cr/^<52>Cr ratio was found in the acid-soluble fraction from Qingzhen. Moreover, ε^<53>Cr and ε^<54>Cr show an inverse correlation among the meteorites analyzed in this study, and the acid residues have larger ε^<54>Cr and smaller ε^<53>Cr values than do the acid-soluble fractions in Allende and Murchison. The enrichment of ^<54>Cr in the Qingzhen sample suggests that the ^<54>Cr heterogeneity due to stellar nucleosynthesis has remained in enstatite chondrite as well as carbonaceous chondrite. In addition, the inverse correlation of ε^<53>Cr and ε^<54>Cr detected in acid residue samples indicates that the high-temperature condensate contained more exotic ^<54>Cr. It is also suggested that the homogenization of Cr isotopes proceeded with time, and terminated within a relatively short time scale of less than 2-3 Ma. | |||||
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 10, p. 313-333, 発行日 1997-09 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |