Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1993-09-01 |
タイトル |
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タイトル |
THE MAGNETIC ANISOTROPY OF GNEISSIC ROCKS FROM THE SKARVSNES AREA, EAST ANTARCTICA |
言語 |
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言語 |
eng |
資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
departmental bulletin paper |
ID登録 |
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ID登録 |
10.15094/00002717 |
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ID登録タイプ |
JaLC |
ページ属性 |
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内容記述タイプ |
Other |
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内容記述 |
P(論文) |
論文名よみ |
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その他のタイトル |
THE MAGNETIC ANISOTROPY OF GNEISSIC ROCKS FROM THE SKARVSNES AREA, EAST ANTARCTICA |
著者名よみ |
ナカイ, ムツミ
フナキ, ミノル /
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著者名(英) |
NAKAI, Mutsumi
FUNAKI, Minoru
WASILEWSKI, Peter
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著者所属(英) |
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en |
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Department of Polar Science, The Graduate University for Advanced Studies (National Institute of Polar Research) |
著者所属(英) |
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en |
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National Institute of Polar Research |
著者所属(英) |
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en |
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NASA Goddard Space Flight Center |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
The relationship between magnetic anisotropy and natural remanent magnetization (NRM) was investigated in the gneissic rocks collected from Skarvsnes, Lutzow-Holm Bay, East Antarctica. About 60% of the samples show clear gneissosity, but 40% of the samples have less clear gneissosity. The samples with gneissic fabric show magnetic anisotropy. The maximum value of H_C and I_R, and the minimum values of X_<diff> coincide with the lineation within a foliation plane. During thermal demagnetization of the samples having stable NRM's, the NRM declinations are gradually shifted toward the direction of lineation, and they are stabilized in a plane, within the rock, having well developed foliation. The anisotropy tendency is more clearly observed by using the H_C and I_R values than X_<diff> values. Two kinds of virtual geomagnetic pole (VGP) positions are identified from the Skarvsnes area. The former is consistent (latitude 11.2°S, longitude 16.0°E) with the previous results reported from the Lutzow-Holm Bay area, and the latter (latitude 2.5°S, longitude 63.2°E) reflects the magnetic anisotropy resulting from the lineation. |
雑誌書誌ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA1072335X |
書誌情報 |
Proceedings of the NIPR Symposium on Antarctic Geosciences
巻 6,
p. 37-46,
発行日 1993-09
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出版者 |
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出版者 |
National Institute of Polar Research |