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Measurement of Iridium in the P/T Boundary Layers in Gifu by Neutron Activation Method
https://naragakuen.repo.nii.ac.jp/records/487
https://naragakuen.repo.nii.ac.jp/records/4878c81aca2-24bb-48f9-9a06-26b46c817c8c
| 名前 / ファイル | ライセンス | アクション |
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本文PDF (236.8 kB)
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| アイテムタイプ | 学術雑誌論文 / Journal Article(1) | |||||||||||||||||
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| 公開日 | 2016-08-26 | |||||||||||||||||
| タイトル | ||||||||||||||||||
| タイトル | Measurement of Iridium in the P/T Boundary Layers in Gifu by Neutron Activation Method | |||||||||||||||||
| タイトル | ||||||||||||||||||
| タイトル | Measurement of Iridium in the P/T Boundary Layers in Gifu by Neutron Activation Method | |||||||||||||||||
| 言語 | en | |||||||||||||||||
| 言語 | ||||||||||||||||||
| 言語 | jpn | |||||||||||||||||
| 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 | journal article | |||||||||||||||||
| 著者 |
藪下, 信
× 藪下, 信
× Yabushita, Shin
× Wada, K.
× Fujii, T.
× Kawakami, S.
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| 抄録 | ||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||
| 内容記述 | Measurement has been made of Ir content in samples collected from P/T boundary layers in Gifu, Japan. The samples were collected from the site where fullerenes have been found. The samples were first crashed into powders and then activated in a nuclear reactor. The gamma ray measurement of the samples was made after cooling for two months. None of the samples analyzed yielded Ir content comparable with the well-known K/T boundary layer at several ppb's. In view of other experiments which yielded negative results, it is tentatively concluded that the P/T boundary does not provided a geological evidence of extra-terrestrial cause in the form of Iridium. |
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| 書誌情報 |
情報学フォーラム en : Information Science Forum 巻 2, p. 1-6, 発行日 2003 |
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| 出版者 | ||||||||||||||||||
| 出版者 | 奈良産業大学情報学部 | |||||||||||||||||
