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Terrestrial 81Kr-ages of four Yamato meteorites
https://nipr.repo.nii.ac.jp/records/1974
https://nipr.repo.nii.ac.jp/records/1974fb687898-92ea-4e7b-af86-0cb7f7152035
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
KJ00000012528.pdf (984.2 kB)
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| Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||||
|---|---|---|---|---|---|---|---|---|
| 公開日 | 1986-07-01 | |||||||
| タイトル | ||||||||
| タイトル | Terrestrial 81Kr-ages of four Yamato meteorites | |||||||
| 言語 | en | |||||||
| 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 | |||||||
| ページ属性 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | P(論文) | |||||||
| 著者名(英) |
Schultz, Ludolf
× Schultz, Ludolf
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| 著者所属(英) | ||||||||
| en | ||||||||
| Max-Planck-Institut fur Chemie | ||||||||
| 抄録(英) | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | The terrestrial ages of four Yamato achondrites have been determined from ^<81>Kr-Kr-exposure ages and cosmogenic ^<38>Ar concentrations. A comparison of terrestrial ages and exposure ages shows that Y-74450 and Y-790007 are paired. The terrestrial age is less than 4×(10)^4y and the exposure age is about 70×(10)^6y. This group of polymict eucrites is different from Y-790122,Y-790260 and Y-790266. The diogenite Y-75032 has an exposure age of 17×(10)^6y and a terrestrial age of less than 7×(10)^4y. The howardite Y-790727 contains large amounts of trapped gases. The exposure age is about 20×(10)^6y. The terrestrial ages of Yamato meteorites are younger than those from the Allan Hills region. This is possibly due to a young age of the Yamato ice field. The relatively short terrestrial ages also exclude a longer time of transportation within the ice and a special concentration mechanism due to ice flow. | |||||||
| 雑誌書誌ID | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AA00733561 | |||||||
| 書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 41, p. 319-327, 発行日 1986-07 |
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