Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1998-12-01 |
タイトル |
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言語 |
en |
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タイトル |
Genesis of the migmatites of Breidvagnipa, East Antarctica |
言語 |
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言語 |
eng |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
migmatite |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
granulite-facies |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
pertial melting |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Lutzow-Holm Complex |
キーワード |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
Rb-Sr isochron age |
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 |
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 |
Genesis of the migmatites of Breidvagnipa, East Antarctica |
著者名(英) |
Shimura, Toshiki
Fraser, Geoffery L.
Tsuchiya, Noriyoshi
Kagami, Hiroo
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著者所属(英) |
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en |
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Graduate School of Science and Technology, Niigata University |
著者所属(英) |
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en |
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Department of Geology and Geophysics, University of Adelaide |
著者所属(英) |
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en |
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Department of Geoscience and Technology, Graduate School of Engineering, Tohoku University |
著者所属(英) |
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en |
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Graduate School of Science and Technology, Niigata University |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
Various types of migmatites and peraluminous granites are widely distributed at Breidvagnipa, which is situated in the granulite-facies part of the Lutzow-Holm Complex (LHC) on the eastern coast of Lutzow-Holm Bay, East Antarctica. The migmatites consist of paleosome, melanosome, and leucosome, and are intimately associated with peraluminous granite. Modes of field occurrence and petrological features are consistent with the paleosome, melanosome, and leucosome and granite representing original rock, restite, and melt, respectively. The migmatites at Breidvagnipa are therefore regarded as the result of partial melting of pelitic metamorphic rocks during high-grade metamorphism in the LHC. Thermobarometric calculations indicate peak pressure and temperature conditions at Breidvagnipa of ∿0.8GPa and 870℃. The age of the high-grade metamorphic event is estimated at ∿570Ma, on the basis of a Rb-Sr whole rock isochron from the migmatite. This age is consistent with previously reported U-Pb zircon ages from the LHC. |
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 |
AA00733561 |
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue
巻 53,
p. 109-136,
発行日 1998-12
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