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Preliminary report on paleomagnetic study of the Yamato Mountains (Massifs B and C), East Antarctica
https://doi.org/10.15094/00003024
https://doi.org/10.15094/00003024532dd805-30fc-4fba-8a70-535c07dc247e
名前 / ファイル | ライセンス | アクション |
---|---|---|
KJ00000044141 (1.4 MB)
|
Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1998-10-01 | |||||
タイトル | ||||||
タイトル | Preliminary report on paleomagnetic study of the Yamato Mountains (Massifs B and C), East Antarctica | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | paleomagnetism | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | AMS | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | the Yamato Mountains | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | East Gondwanaland | |||||
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 | 10.15094/00003024 | |||||
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) | |||||
著者名(英) |
Ishikawa, Naoto
× Ishikawa, Naoto× Funaki, Minoru |
|||||
著者所属(英) | ||||||
en | ||||||
School of Earth Sciences, IHS, Kyoto University | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Paleomagnetic measurements were performed on granitic gneisses, syenites and granitic dike rocks from Massifs B and C of the Yamato Mountains in East Antarctica. The stable magnetic components carried by magnetite were isolated from granitic gneiss samples from two sites at Massif B and syenite samples from two sites at Massif C. The component directions are well grouped in each massif, but are different between the two massifs. The virtual geomagnetic pole (VGP) position of the gneisses is near the Cambrian, Silurian and upper Devonian segments of the apparent polar wander path (APWP) of East Gondwanaland, while that of the syenites is near the Ordovician segment. These comparisons are not supported by previous K-Ar age data, except the comparison between the gneiss pole and the upper Devonian segment of the APWP. The anisotropy of magnetic susceptibility (AMS) was also measured for samples at the four sites. The gneisses and syenites showed consistent magnetic fabrics within each massif. Especially, the Kl direction of the gneisses is almost parallel to the petrographical foliation. The following possibilities may be considered in order to explain the inconsistency between the VGP positions and the APWP of East Gondwanaland and the difference in the VGP positions between the gneisses and syenites: (1) differential tectonic movement between the two massifs and/or (2) the deviation of remanent acquisition in anisotropic rock or internal deformation in the rock bodies. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA1130866X | |||||
書誌情報 |
Polar geoscience 巻 11, p. 132-142, 発行日 1998-10 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |