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Inverse Magnetic Susceptibility Fabrics in Pelagic Sediment: Implications for Magnetofossil Abundance and Alignment
https://doi.org/10.24517/00067009
https://doi.org/10.24517/000670095f5f59f4-394f-4f8d-b8ac-8279665bfe3d
名前 / ファイル | ライセンス | アクション |
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SC-PR-USUI-Y-124-10672.pdf (3.2 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-09-02 | |||||
タイトル | ||||||
タイトル | Inverse Magnetic Susceptibility Fabrics in Pelagic Sediment: Implications for Magnetofossil Abundance and Alignment | |||||
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 | journal article | |||||
ID登録 | ||||||
ID登録 | 10.24517/00067009 | |||||
ID登録タイプ | JaLC | |||||
著者 |
Usui, Yoichi
× Usui, Yoichi× Yamazaki, Toshitsugu× Oka, Toshitaka× Kumagai, Yuho |
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著者別表示 |
臼井, 洋一
× 臼井, 洋一 |
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提供者所属 | ||||||
内容記述タイプ | Other | |||||
内容記述 | 金沢大学理工研究域地球社会基盤学系 | |||||
書誌情報 |
Journal of Geophysical Research: Solid Earth 巻 124, 号 11, p. 10672-10686, 発行日 2019-10-31 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2169-9356 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 2169-9313 | |||||
NCID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10819743 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1029/2019JB018128 | |||||
出版者 | ||||||
出版者 | American Geophysical Union / Wiley | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Single-domain magnetite particles exhibit minimum susceptibility along their elongation, resulting in so-called inverse fabric of the anisotropy of magnetic susceptibility (AMS). We report the discovery of inverse AMS fabrics from pelagic clay recovered by a ∼12 m long piston core from the western North Pacific. A previous study identified fossil single-domain magnetite produced by magnetotactic bacteria (magnetofossils) as the dominant ferrimagnetic mineral in the sediment. The inverse AMS fabrics were found in a ∼2 m zone. The ∼6 and ∼4 m of sediment above and below this zone showed normal, horizontal AMS fabrics. Rock magnetic data and ferromagnetic resonance spectroscopy indicated that magnetofossils account for most of the mean susceptibility regardless of normal or inverse AMS. This was explained by the mixing models where the inverse fabric from magnetofossils is nearly balanced by the normal fabrics of terrigenous minerals. The corrected degree of AMS carried by magnetofossils in the sediment was estimated to be ∼1.01, which is comparable to that of typical pelagic sediment at shallow depth. On the other hand, terrigenous minerals in the sediment were estimated to have higher degree of anisotropy, possibly reflecting burial and subsequent erosion of >80 m of sediment, which was also suggested by a subbottom acoustic stratigraphy. This suggests that inverse AMS fabrics due to magnetofossils may be widespread in pelagic clay without strong compaction. ©2019. American Geophysical Union. All Rights Reserved. | |||||
権利 | ||||||
権利情報 | Copyright ©2019. American Geophysical Union | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2019JB018128 | |||||
関連名称 | https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2019JB018128 | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://agupubs.onlinelibrary.wiley.com/journal/21699356 | |||||
関連名称 | https://agupubs.onlinelibrary.wiley.com/journal/21699356 | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://sites.agu.org/ | |||||
関連名称 | http://sites.agu.org/ | |||||
関連URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://www.wiley.com/en-gb | |||||
関連名称 | https://www.wiley.com/en-gb |