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Investigation of the effect of shock on the Antarctic meteorites by the 40Ar-39Ar method
https://nipr.repo.nii.ac.jp/records/2128
https://nipr.repo.nii.ac.jp/records/2128a7007e5c-df3a-4e01-b609-ccae9f7fc3a1
名前 / ファイル | ライセンス | アクション |
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KJ00000012681 (1.1 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1987-03-01 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Investigation of the effect of shock on the Antarctic meteorites by the 40Ar-39Ar method | |||||
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) |
Takigami,Yutaka
× Takigami,Yutaka× Kaneoka,Ichiro |
|||||
著者所属(英) | ||||||
en | ||||||
Geophysical Institute, Faculty of Science, University of Tokyo/Geophysical Institute, Faculty of Science, University of Tokyo | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | In order to investigate the shock effect on the ^<40>Ar-^<39>Ar ages of meteorites, ^<40>Ar-^<39>Ar geochronological studies were performed on two Antarctic meteorites, Y-790964 (LL, shocked) and Y-790448 (LL3,unshocked). Samples were taken from the inner and the outer parts of each meteorite for comparison. The inner part and two outer parts of the seriously shocked Y-790964 have almost the same plateau ages of 1276±24 Ma, 1264±23 Ma and 1241±37 Ma. Older ages are not observed in the higher temperature fractions, which would indicate a very intense shock event. In the unshocked meteorite, Yamato-790448,the plateau-like ages of about 4492 Ma for the inner part and 4325 Ma for the outer part are observed at lower temperatures, but the reason for the apparent difference of the ages is not yet clear. | |||||
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 46, p. 133-143, 発行日 1987-03 |