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- Tanahara Akira
- College of Science, Department of Chemistry, Biology and Marine Science, University of the Ryukyus
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- Taira Hatsuo
- College of Science, Department of Chemistry, Biology and Marine Science, University of the Ryukyus
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- Yamakawa Ken
- College of Science, Department of Chemistry, Biology and Marine Science, University of the Ryukyus
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- Tsuha Ayano
- College of Science, Department of Chemistry, Biology and Marine Science, University of the Ryukyus
書誌事項
- タイトル別名
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- Application of excess 210Pb dating meth
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抄録
The excess 210Pb dating method was applied to two young straw stalactites collected from a cave in southern Okinawa Island, Japan. The 210Pb profiles only in the matrix of the straws exhibited an exponential decrease with distance from the tip. The 210Pb profiles of the two straw samples gave the values of 2.2 and 5.9 mm/y for longitudinal growth rates. The excess 210Pb is distributed uniformly over the outer and inner surfaces of the straws. Such an excess of 210Pb is presumably produced from the airborne 222Rn which exists with high concentrations in the cave air and the ground water running through the central channel of the straws. During growing process of the straws, a part of the 210Pb will be adsorbed on the tip of straw, and they are supposed to be incorporated into matrix part during reprecipitation of CaCO3.
収録刊行物
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- GEOCHEMICAL JOURNAL
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GEOCHEMICAL JOURNAL 32 (3), 183-187, 1998
一般社団法人日本地球化学会
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詳細情報 詳細情報について
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- CRID
- 1390001204550236928
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- NII論文ID
- 130003904602
- 10008802833
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- NII書誌ID
- AA00654975
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- COI
- 1:CAS:528:DyaK1cXksFSitL0%3D
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- ISSN
- 18805973
- 00167002
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- NDL書誌ID
- 4514118
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可