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Identification of paleomagnetic remanence carriers in ca. 3.47 Ga dacite from the Duffer Formation, the Pilbara Craton
https://doi.org/10.24517/00067013
https://doi.org/10.24517/000670137dbab533-cf39-44fc-9980-5336254f4df9
| 名前 / ファイル | ライセンス | アクション |
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SC-PR-USUI-Y-299-106411.pdf (9.6 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 | Identification of paleomagnetic remanence carriers in ca. 3.47 Ga dacite from the Duffer Formation, the Pilbara Craton | |||||||
| 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 | 10.24517/00067013 | |||||||
| ID登録タイプ | JaLC | |||||||
| 著者 |
Usui, Yoichi
× Usui, Yoichi× Saitoh, Masafumi× Tani, Kenichiro× Nishizawa, Manabu× Shibuya, Takazo× Kato, Chie× Okumura, Tomoyo× Kashiwabara, Teruhiko |
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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 |
Physics of the Earth and Planetary Interiors 巻 299, p. 106411, 発行日 2020-02 |
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| ISSN | ||||||||
| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 0031-9201 | |||||||
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| 収録物識別子タイプ | ISSN | |||||||
| 収録物識別子 | 1872-7395 | |||||||
| NCID | ||||||||
| 収録物識別子タイプ | NCID | |||||||
| 収録物識別子 | AA00773963 | |||||||
| DOI | ||||||||
| 関連タイプ | isVersionOf | |||||||
| 識別子タイプ | DOI | |||||||
| 関連識別子 | 10.1016/j.pepi.2019.106411 | |||||||
| 出版者 | ||||||||
| 出版者 | Elsevier B.V. | |||||||
| 抄録 | ||||||||
| 内容記述タイプ | Abstract | |||||||
| 内容記述 | The ca. 3.47 Ga Duffer Formation has been considered to carry one of the oldest paleomagnetic records. Yet, the lack of rock magnetic data limits the interpretation of the nature of the remanence. We conducted a rock magnetic and paleomagnetic investigation on columnar dacite of the Duffer Formation. The main magnetic minerals are phenocrysts of titanomagnetite and magnetite, and secondary hematite in groundmass. Detailed thermal demagnetization revealed more complex natural remanence than previously estimated, consisting of four components with typical unblocking temperature of 200–350, 200–500, 590, and 690 °C. Combined with alternating field demagnetization and rock magnetic data, they are attributed to titanomagnetite, coarse-grained magnetite, fine-grained magnetite, and hematite, respectively. The comparison of unblocking temperature and coercivity suggests that the previously proposed secondary component is carried by fine-grained magnetite as well as hematite, while the putative primary component is carried by coarse-grained magnetite and titanomagnetite. Microscopic observations showed that coarse-grained magnetite and titanomagnetite are primary crystals, although this does not necessarily indicate they preserve primary remanence. The remanence directions of all components revealed higher scatter than the previous studies, suggesting the need for caution in interpretation. The low unblocking temperature of titanomagnetite suggests that if their remanence is truly primary, the rocks must have kept below ~ 250 °C for ~3.47 billion years. © 2020 Elsevier B.V. | |||||||
| 内容記述 | ||||||||
| 内容記述タイプ | Other | |||||||
| 内容記述 | Embargo Period 24 months | |||||||
| 権利 | ||||||||
| 権利情報 | Copyright © 2020 Elsevier (CC-BY-NC-ND) | |||||||
| 著者版フラグ | ||||||||
| 出版タイプ | AM | |||||||
| 出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa | |||||||
| 関連URI | ||||||||
| 識別子タイプ | URI | |||||||
| 関連識別子 | https://www.sciencedirect.com/science/article/pii/S0031920119301219?via%3Dihub | |||||||
| 関連名称 | https://www.sciencedirect.com/science/article/pii/S0031920119301219?via%3Dihub | |||||||
| 関連URI | ||||||||
| 識別子タイプ | URI | |||||||
| 関連識別子 | https://www.sciencedirect.com/journal/physics-of-the-earth-and-planetary-interiors | |||||||
| 関連名称 | https://www.sciencedirect.com/journal/physics-of-the-earth-and-planetary-interiors | |||||||
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| 識別子タイプ | URI | |||||||
| 関連識別子 | http://www.elsevier.com/ | |||||||
| 関連名称 | http://www.elsevier.com/ | |||||||
