Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1992-03-01 |
タイトル |
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タイトル |
40Ar-39Ar analyses of Y-74063 and ALH-78230: Consortium study onunique meteorites 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 |
10.15094/00004578 |
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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 ofEarth Sciences,Faculty of Science, Yamagata University |
著者所属(英) |
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en |
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National Instituteof 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 |
As part of a consortium study on unique meteorites from Antarctica, ^<40>Ar-^<39>Ar analyses were performed for two meteorites Y-74063 and ALH-78230,which are related to lodranite and the Acapulco meteorite. Y-74063,93 shows an ^<40>Ar-^<39>Ar plateau age of 4556±53 Ma, containing about 10^<-6>cm^3STP/g trapped ^<36>Ar. ALH-78230,55 also indicates an ^<40>Ar-^<39>Ar plateau age of 4531±23 Ma in the higher temperature fractions, but the lower temperature fractions suggest the occurrence of a later degassing event around 400-500 Ma. Trapped ^<36>Ar is about 10^<-8>cm^3STP/g. These results indicate that the two meteorites Y-74063 and ALH-78230 experienced different thermal histories. |
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 5,
p. 224-232,
発行日 1992-03
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出版者 |
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出版者 |
National Institute of Polar Research |