Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1990-09-01 |
タイトル |
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タイトル |
NATURAL REMANENT MAGNETIZATIONS OF GRANITE AND SYENITE FROM PINGVINANE AND LUNCKERYGGEN IN THE SØR RONDANE MOUNTAINS, 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 |
10.15094/00002621 |
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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) |
著者名よみ |
フナキ, ミノル
トキエダ, カツヤス
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著者名(英) |
FUNAKI, Minoru
TOKIEDA, Katsuyasu
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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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Department of Physics, Faculty of Sciences, Shimane University |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
The characteristics of the natural remanent magnetizations (NRMs) of granite and syenite from Pingvinane and Lunckeryggen in the western Sør Rondane Mountains were elucidated. In order to endorse the NRMs, AF and thermal demagnetization, thermomagnetic and magnetic hysteresis properties were analyzed. Furthermore, microscopic observations were carried out for identification of the magnetic grains.Consequently, reliable mean NRM directions acquired in early Silurian period were given from the Pingvinane granite as I=68.3°, D=315.3°, α_<95>=4.1° and the Lunckeryggen syenite as I=74.0°, D=327.3°, α_<95>=7.0°. Part of the syenite and granite from Lunckeryggen showed different NRM directions as I=79.8°, D=201.3°, α_<95>=9.3°, and as I=39.8°, D=178.9°, α_<95>=12.1°, respectively, although their meaning was not elucidated in this paper. The syenite and granite from Lunckeryggen include magnetite for NRM carriers with heterogeneous size distributions, which would cause a wide scattering of their NRMs. The virtual geomagnetic pole positions calculated from the established NRMs were at 37.4°S, 10.5°W, for the Pingvinane granite and 44.6°S, 1.0°E, for the Lunckeryggen syenite. These positions are consistent with the previous result reported by J.D.A. ZIJDERVELD (J. Geophys. Res., 73,3773,1968). |
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 4,
p. 67-79,
発行日 1990-09
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出版者 |
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出版者 |
National Institute of Polar Research |