Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1988-03-01 |
タイトル |
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タイトル |
40Ar-39Ar analyses of Yamato-75097 (L6) chondrite from Antarctica |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ID登録 |
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ID登録 |
10.15094/00004457 |
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ID登録タイプ |
JaLC |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
著者名(英) |
Kaneoka, Ichiro
Takaoka, Nobuo
Yanai, Keizo
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著者所属(英) |
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en |
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Earthquake Research Institute, University of Tokyo |
著者所属(英) |
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en |
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Department of Earth Sciences, Faculty of Science, Yamagata University |
著者所属(英) |
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en |
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National Institute of Polar Research |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
^<40>Ar-^<39>Ar analyses were performed on the host phase of an H-clast bearing chondrite Yamato-75097 (L6). The result indicates a typical U-shaped age spectrum, suggesting that the serious degassing event occurred at about 490Ma or slightly younger age for this meteorite. Since the meteorite shows a sign of shock, this event might have been a collisional event. It is estimated that more than 99% of radiogenic ^<40>Ar was degassed during this event. For this degassing, it requires prolonged time of at least a few hours even at 1200℃, and a longer time is required if the ambient temperature is lower and the diffusion mainly controls the degassing process. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA10784627 |
書誌情報 |
Proceedings of the NIPR Symposium on Antarctic Meteorites
巻 1,
p. 206-214,
発行日 1988-03
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出版者 |
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出版者 |
National Institute of Polar Research |