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A Study of the Io/Th (Th^230/Th^232) Chronology of Some Marine Sediments Using Solid-state Detectors
http://hdl.handle.net/20.500.12000/23247
http://hdl.handle.net/20.500.12000/23247e6d52f8a-ec8a-4a1a-996e-ba154ddfd09b
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
No12p011.pdf
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| Item type | デフォルトアイテムタイプ（フル）(1) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 公開日 | 2012-02-14 | |||||||||
| タイトル | ||||||||||
| タイトル | A Study of the Io/Th (Th^230/Th^232) Chronology of Some Marine Sediments Using Solid-state Detectors | |||||||||
| 言語 | en | |||||||||
| 作成者 |
Taira, Hatsuo
× Taira, Hatsuo
× 平良, 初男
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| アクセス権 | ||||||||||
| アクセス権 | open access | |||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | The exponential decrease in the ionium /thorium (Th^230/Th^232) ratios with depth indicates that the assumptions of the method are in conformity with nature. The utilization of both extraction and ion exchage techniques shows good agreement in the measured ionium/thorium (Th^230/Th^232) ratios but better recovery of the thorium isotopes is obtained for the ion exchange technique.\nThe ionium/thorium (Th^230/Th^232) ratios depend upon geographical locations and on sedimentary materials in the ocean. The surface values of the ionium/tnorium (Th^230/Th^232) ratios are smaller for those areas receiving large amounts of land derived solid phase, and higher for carbonate materials.The rate of accumulation in the Mid-Pacific is 0.8mm/10^2 years and in the Arctic Ocean is 9.2mm/10^3 years on a gross basis. The deposits near coastal areas show a rapid accumulation rate due to the large amount of land-derived solid phase in these regions.\nThis paper is a part of a thesis submitted to the Department of Chemistry at the University of Hawaii on January, 1967. | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Other | |||||||||
| 内容記述 | 紀要論文 | |||||||||
| 出版者 | ||||||||||
| 出版者 | 琉球大学理工学部 | |||||||||
| 言語 | ja | |||||||||
| 出版者 | ||||||||||
| 出版者 | Science and Engineering Division, University of the Ryukyus | |||||||||
| 言語 | en | |||||||||
| 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 | |||||||||
| 出版タイプ | ||||||||||
| 出版タイプ | NA | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_be7fb7dd8ff6fe43 | |||||||||
| 識別子 | ||||||||||
| 識別子 | http://hdl.handle.net/20.500.12000/23247 | |||||||||
| 識別子タイプ | HDL | |||||||||
| 収録物識別子 | ||||||||||
| 収録物識別子タイプ | NCID | |||||||||
| 収録物識別子 | AN0025080X | |||||||||
| 収録物名 | ||||||||||
| 収録物名 | 琉球大学理工学部紀要. 理学編 | |||||||||
| 言語 | ja | |||||||||
| 収録物名 | ||||||||||
| 収録物名 | Bulletin of Science & Engineering Division, University of Ryukyus. Mathematics & natural sciences | |||||||||
| 言語 | en | |||||||||
| 書誌情報 |
号 12, p. 11-30, 発行日 1969-04 |
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