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Noble gases in Yamato-793274 and -86032 lunar meteorites
https://doi.org/10.15094/00004570
https://doi.org/10.15094/00004570ee61c400-9fdf-47b6-8eb0-853caee36797
名前 / ファイル | ライセンス | アクション |
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KJ00000036376 (2.4 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1992-03-01 | |||||
タイトル | ||||||
タイトル | Noble gases in Yamato-793274 and -86032 lunar 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 | 10.15094/00004570 | |||||
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) |
Takaoka,Nobuo
× Takaoka,Nobuo× Yoshida,Yo-ichi |
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著者所属(英) | ||||||
en | ||||||
Department of Earth Sciences,Faculty of Science, Yamagata University/Department of Earth Sciences,Faculty of Science, Yamagata University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Isotopic abundances of noble gases are reported for whole rock samples, mineral and grain size separates prepared from lunar meteorites Yamato-793274 and -86032. Y-793274 is rich in trapped solar gases, whereas Y-86032 is depleted in them, resembling the Y-82192 and -82193 lunar meteorites. From measurements of radiogenic Ar, the K-Ar age of Y-86032 is calculated to be 3940±240 Ma, in agreement with the K-Ar and Ar-Ar ages for Y-82192 and -82193. From measurements of cosmogenic noble gases, the total duration of cosmic-ray exposure is calculated to be 510±140 and 11±1 Ma for Y-793274 and -86032,respectively. The exposure age of Y-86032 is in good agreement with that for Y-82192/3. The agreement in the K-Ar and exposure ages as well as in the trapped gas abundances supports the earlier result that Y-86032 is paired with Y-82192 and -82193. Y-793274 experienced most of exposures to cosmic-rays in the lunar regolith because the transit time from the moon to the earth has been reported to be very short, whereas it is supposed that Y-86032 experienced a large part of cosmic-ray exposure in the interplanetary space during the flight from the moon to the earth. | |||||
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 5, p. 36-48, 発行日 1992-03 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |