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GEOLOGY OF THE EASTERN SØR RONDANE MOUNTAINS, EAST ANTARCTICA
https://doi.org/10.15094/00002592
https://doi.org/10.15094/00002592b06b1076-951c-4b46-9797-3a600683a152
名前 / ファイル | ライセンス | アクション |
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KJ00002368182 (2.0 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1989-09-01 | |||||
タイトル | ||||||
タイトル | GEOLOGY OF THE EASTERN SØR RONDANE MOUNTAINS, EAST ANTARCTICA | |||||
言語 | ||||||
言語 | eng | |||||
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 | 10.15094/00002592 | |||||
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) |
ASAMI, Masao
× ASAMI, Masao× MAKIMOTO, Hiroshi× GREW, Edward S. |
|||||
著者所属(英) | ||||||
en | ||||||
Department of Geological Sciences, College of Liberal Arts, Okayama University | ||||||
著者所属(英) | ||||||
en | ||||||
Geological Survey of Japan | ||||||
著者所属(英) | ||||||
en | ||||||
Department of Geological Sciences, University of Maine | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The eastern Sør Rondane Mountains (71°40′-72°20′S; 26°30′-28°E), which was surveyed by the summer field party of JARE-29 in early 1988,is underlain by a high-grade migmatized gneissic complex consisting largely of metasedimentary and metavolcanic rocks, and subordinate metaigneous rocks and unmetamorphosed diorite and granite-pegmatite intrusions. Upper amphibolite to hornblende granulite-facies metamorphism was followed by an amphibolite-facies event, which is closely related with the migmatization. This sequence is indicated by the widespread occurrence of primary orthopyroxene-and sillimanite-bearing mineral assemblages, and secondary cummingtonite and green hornblende replacing pyroxenes and secondary biotite replacing garnet. Metadikes of biotitic schist, typically hornblende-biotite-plagioclase-quartz, which cut the gneisses, are considered to have been intruded between the two metamorphic events. A late, greenschist-facies event is suggested by the alteration of high-temperature mafic minerals to calcite, chlorite, epidote, muscovite and margarite. Earlier, recumbent isoclinal folds, and later upright more open folds could correspond to the early high-grade metamorphism and the amphibolite-facies event, respectively. Fault zones with displacements of several meters to 10m or more are abundant and could also be related to the amphibolite facies event. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA1072335X | |||||
書誌情報 |
Proceedings of the NIPR Symposium on Antarctic Geosciences 巻 3, p. 81-99, 発行日 1989-09 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |