Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1998-10-01 |
タイトル |
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タイトル |
Geology of the Mt. Riiser-Larsen area of the Napier Complex, Enderby Land, 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 |
East Antarctica |
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 |
Enderby Land |
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 |
geology |
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 |
Mt. Riiser-Larsen |
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 |
Napier Complex |
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 |
10.15094/00003026 |
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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(英) |
Ishizuka, Hideo
Ishikawa, Masahiro
Hokada, Tomokazu
Suzuki, Satoko
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著者所属(英) |
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en |
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Department of Geology, Kochi University |
著者所属(英) |
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en |
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Geological Institute, Yokohama National University |
著者所属(英) |
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en |
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Department of Polar Science, School of Mathematical and Physical Sciences, The Graduate University for Advanced Studies |
著者所属(英) |
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en |
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Department of Polar Science, School of Mathematical and Physical Sciences, The Graduate University for Advanced Studies |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
The summer party of the 38th Japanese Antarctic Research Expedition (1996-97) performed field work in the Mt. Riiser-Larsen area of the Archaean Napier Complex, Enderby Land, East Antarctica. The area is underlain by various kinds of metamorphic rocks and unmetamorphosed intrusive rocks. Of these, the metamorphic rocks are tentatively divided into the layered gneiss series, massive gneiss series, and transitional gneiss series. The layered gneiss series, occurring in the central to northwestern part of the area, is characterized by layering structure composed of several types of garnet felsic gneiss with subordinate amounts of orthopyroxene felsic gneiss, pelitic and mafic gneisses, impure quartzite, and metamorphosed banded iron formation. The massive gneiss series is predominant in the southern to southeastern part and consists mainly of massive orthopyroxene felsic gneiss, in which the layering structure is not conspicuous and the lithology is rather monotonous. The transitional gneiss series is developed between the layered and massive gneiss series, in which metamorphosed anorthosite and ultramafic rocks occur characteristically as thin layers or blocks or pods. Metamorphic foliation, which is almost always parallel to the layering structure, strikes NE-SW to E-W and dips at moderate to gentle angles (20-40°) to the south or southeast. The mineral associations indicate that the majority of the metamorphic rocks could belong to the high temperature granulite facies at metamorphic temperature higher than 1000℃. Unmetamorphosed doleritic intrusive rocks, so-called Amundsen Dikes, intrude throughout the area, striking N-S and NE-SW. Furthermore, there are many shear zones, following preexisting structures such as dike margins, in which the gneisses and dikes have been sheared to mylonites or pseudotachylite-like rocks. |
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 |
AA1130866X |
書誌情報 |
Polar geoscience
巻 11,
p. 154-171,
発行日 1998-10
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出版者 |
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出版者 |
National Institute of Polar Research |