WEKO3
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Noble gases and 81Kr-terrestrial age of Asuka-881757 lunar meteorite
https://doi.org/10.15094/00004602
https://doi.org/10.15094/0000460241181f2d-feaa-4b3d-aedd-60583c2a8c3b
名前 / ファイル | ライセンス | アクション |
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KJ00000036408 (1.4 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1993-05-01 | |||||
タイトル | ||||||
タイトル | Noble gases and 81Kr-terrestrial age of Asuka-881757 lunar meteorite | |||||
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 | 10.15094/00004602 | |||||
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) |
Nagao,Keisuke
× Nagao,Keisuke× Miura,Yayoi |
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著者所属(英) | ||||||
en | ||||||
Institute for Study of the Earth's Interior, Okayama University/Institute for Study of the Earth's Interior, Okayama University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Noble gas compositions of the Asuka-881757 lunar meteorite were determined using 10.2 and 395.3mg specimens. This meteorite has virtually no solar type noble gases. Small amounts of trapped Ar, Kr and Xe have relative abundances similar to those of atmospheric and planetary noble gases. K-Ar age is 3.75±0.35Ga, which agrees with the ages by other methods such as U-Th-Pb, Rb-Sr and Ar-Ar. Cosmogenic isotope concentrations are the lowest among the lunar meteorites reported until now. These isotopes were produced in space by 4π geometry irradiation. The history of A-881757 based on the cosmic-ray produced stable isotopes and ^<81>Kr is as follows : It has been shielded from the cosmic ray irradiation until it was ejected from the moon 1.35±0.17Ma ago and fell on the earth 0.06±0.04Ma ago after a moon-earth transit time of 1.29±0.13Ma. These results require an ejection event for A-881757 in addition to those responsible for the other lunar meteorites. | |||||
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 6, p. 76-87, 発行日 1993-05 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |