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Relative REE abundances of porewater in Pacific pelagic sediment: estimation by equilibrium calculations based on REE composition of Mn-oxide and apatite components
https://doi.org/10.18999/bulnum.023.01
https://doi.org/10.18999/bulnum.023.015d2b70d4-bdb3-48ec-b89f-0a76da6f3911
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
bulnum_23_1.pdf (1.4 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2009-09-16 | |||||
| タイトル | ||||||
| タイトル | Relative REE abundances of porewater in Pacific pelagic sediment: estimation by equilibrium calculations based on REE composition of Mn-oxide and apatite components | |||||
| 言語 | en | |||||
| 著者 |
TAKEBE, Masamichi
× TAKEBE, Masamichi× YAMAMOTO, Koshi |
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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 | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | REE composition | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Porewater | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Pelagic sediment | |||||
| キーワード | ||||||
| 主題Scheme | Other | |||||
| 主題 | Equilibrium calculation | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | In order to reveal REE mobilization in sediment during early diagenesis, we estimate the REE composition of porewater in Pacific sediments deposited in the Equatorial area. The Pacific sediment was divided chemically into leachate 1 (extracted by alkaline Na_2S_2O_4), leachate 2 (extracted by 0.17 M HCl) and residue. The leachate 1, leachate 2 and residue consist mainly of Mn oxide, carbonate fluorapatite (CFA), and detrital materials, respectively. The Mn oxide and CFA component are considered to provide information about REE composition of porewater. Assuming that Mn oxide and CFA in the sediment were in chemical equilibrium with the porewater in terms of REE, the REE composition (REE/Gd ratio) of the porewater in the sediment was estimated from the REE abundance of the leachate 1 and 2. The estimated REE pattern (REE/Gd ratio) of the porewater shows La depletion and Ce enrichment relative to the deep-seawater. The difference of REE composition between deep-seawater and porewater suggests that REE in pelagic sediment is mobilized during early diagenesis. | |||||
| 言語 | en | |||||
| 出版者 | ||||||
| 出版者 | 名古屋大学博物館 | |||||
| 言語 | ja | |||||
| 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 | VoR | |||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
| ID登録 | ||||||
| ID登録 | 10.18999/bulnum.023.01 | |||||
| ID登録タイプ | JaLC | |||||
| ISSN（print） | ||||||
| 収録物識別子タイプ | PISSN | |||||
| 収録物識別子 | 13468286 | |||||
| 書誌情報 |
ja : 名古屋大学博物館報告 巻 23, p. 1-12, 発行日 2007-12-25 |
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| フォーマット | ||||||
| 値 | application/pdf | |||||
| 著者版フラグ | ||||||
| 値 | publisher | |||||
| URI | ||||||
| 識別子 | http://hdl.handle.net/2237/12208 | |||||
| 識別子タイプ | HDL | |||||
