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PALEOMAGNETIC STUDY OF RAJMAHAL TRAP IN INDIA : DISCUSSION OF GEOMAGNETIC DIPOLE MOMENT AND RECONSTRUCTION OF GONDWANALAND
https://doi.org/10.15094/00002844
https://doi.org/10.15094/00002844baaf4484-cc16-438f-8db6-f97626eae3ec
名前 / ファイル | ライセンス | アクション |
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1997-09-01 | |||||
タイトル | ||||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Rajmahal trap | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | VGP | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | APWP of India | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | paleointensity | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Cretaceous quiet zone | |||||
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 | |||||
ID登録 | ||||||
ID登録 | 10.15094/00002844 | |||||
ID登録タイプ | JaLC | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
論文名よみ | ||||||
その他のタイトル | PALEOMAGNETIC STUDY OF RAJMAHAL TRAP IN INDIA : DISCUSSION OF GEOMAGNETIC DIPOLE MOMENT AND RECONSTRUCTION OF GONDWANALAND | |||||
著者名よみ |
サカイ, ヒデオ
× サカイ, ヒデオ× フナキ, ミノル× サトウ, トモノリ× / タキガミ, ユタカ× サカイ, ハルタカ× ヒロオカ, キミオ |
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著者名(英) |
SAKAI, Hideo
× SAKAI, Hideo× FUNAKI, Minoru× SATO, Tomonori× RAO, Venkata K.× TAKIGAMI, Yutaka× SAKAI, Harutaka× HIROOKA, Kimio |
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著者所属(英) | ||||||
en | ||||||
Department of Earth Sciences, Toyama University | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
著者所属(英) | ||||||
en | ||||||
Department of Earth Sciences, Toyama University | ||||||
著者所属(英) | ||||||
en | ||||||
Geological Survey of India | ||||||
著者所属(英) | ||||||
en | ||||||
Kanto Gakuen University | ||||||
著者所属(英) | ||||||
en | ||||||
Graduate School of Social and Cultural Studies, Kyushu University | ||||||
著者所属(英) | ||||||
en | ||||||
Department of Earth Sciences, Toyama University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | A paleomagnetic study was conducted on the Rajmahal trap in northeastern India. The age of the trap was determined by ^<40>Ar/^<39>Ar dating as 125 to 130 Ma (H. SAKAI et al., J. Geol. Soc. Jpn., 103,192,1997). The VGP (vitual geomagnetic pole) of the Rajmahal trap was studied and compared with the APWP (apparent polar wander path) of India (J. E. BESSE and V. COURTILLOT, J. Geophys, Res., 96,4029,1991). The VGP is situated slightly apart from the position of 120 Ma in Indian APWP, which suggests that the Rajmahal trap is older than 120 Ma. That is, paleomagnetic study supports the ^<40>Ar/^<39>Ar age of 125-130 Ma. This result suggests that the Rajmahal trap was formed around the age of rifting of India from Antarctica. Thelliers' paleointensity experiment was applied to the Rajmahal basalt and the paleointensity of 31.4±5.8 μT was determined. The geomagnetic dipole moment in Mesozoic was summarized using formerly reported paleointensities and data in this study. We can identify that the dipole moment from 180 Ma to 125 Ma before the period of Cretaceous quiet zone, oscillates between 30% and 70% of the present moment. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA1072335X | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Antarctic Geosciences 巻 10, p. 68-78, 発行日 1997-09 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |