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Variations of divalent cation concentrations in pore water and the precipitation of Mg-rich authigenic mineral during early diagenesis of Toyoma Formation
http://hdl.handle.net/10091/10679
http://hdl.handle.net/10091/10679307ba6a8-c0cb-4b51-ae30-f20b9e36763c
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
Science38-03.pdf (559.3 kB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||||
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| 公開日 | 2010-10-06 | |||||||||||||
| タイトル | ||||||||||||||
| タイトル | Variations of divalent cation concentrations in pore water and the precipitation of Mg-rich authigenic mineral during early diagenesis of Toyoma Formation | |||||||||||||
| 言語 | ||||||||||||||
| 言語 | eng | |||||||||||||
| 資源タイプ | ||||||||||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||
| タイプ | departmental bulletin paper | |||||||||||||
| 著者 |
MORIKIYO, TOSHIRO
× MORIKIYO, TOSHIRO
× MATSUNAGA, KINUKO
× IWAMASA, KAZUO
× KANISAWA, SATOSHI
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| 出版者 | ||||||||||||||
| 出版者 | 信州大学理学部 | |||||||||||||
| 引用 | ||||||||||||||
| 内容記述 | 信州大学理学部紀要 38: 23-34(2004) | |||||||||||||
| 書誌情報 |
信州大学理学部紀要 巻 38, p. 23-34, 発行日 2004-03-26 |
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| 抄録 | ||||||||||||||
| 内容記述 | The variations of Fe, Mn and Mg concentrations in pore water were deduced from the chemistry of calcite. With depth, the Fe/Ca, Mn/Ca, Mg/Ca ratios of pore water decrease. The decrease in the Fe/Ca ratio is due to the precipitation of pyrite, whereas the decrease in the Mn/Ca ratio is due to the precipitation of Mn-rich calcite. The depletion of Mg in pore water is ascribed to the precipitation of either Mg-rich smectite or Mg-rich chlorite. A-type rock is further divided into A1 and A2 subtypes, on the basis of δ13C. Excesses of MgO and deficiencies of K舀 O above the calculated whole-rock compositions are observed mainly in the phosphatic nodules and A1 subtype. This suggests that the formation of Mg-rich smectite or Mg-rich chlorite took place at very early stage of diagenesis of the Toyoma Formation. | |||||||||||||
| 資源タイプ（コンテンツの種類） | ||||||||||||||
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| 収録物識別子タイプ | PISSN | |||||||||||||
| 収録物識別子 | 0583-063X | |||||||||||||
| 書誌レコードID | ||||||||||||||
| 収録物識別子タイプ | NCID | |||||||||||||
| 収録物識別子 | AA00697923 | |||||||||||||
| 出版タイプ | ||||||||||||||
| 出版タイプ | VoR | |||||||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||
