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META-ULTRAMAFIC ROCK FROM THE AUSTKAMPANE AREA OF THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA
https://doi.org/10.15094/00002822
https://doi.org/10.15094/000028220b1b3978-5466-42a1-a93f-a743a5a06781
名前 / ファイル | ライセンス | アクション |
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KJ00002409869 (899.5 kB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 1996-09-01 | |||||
タイトル | ||||||
タイトル | META-ULTRAMAFIC ROCK FROM THE AUSTKAMPANE AREA OF THE SØR RONDANE MOUNTAINS, EAST ANTARCTICA | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | meta-ultramafic rock | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | chemistry | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | cumulate | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Sør Rondane Mountains | |||||
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 | 10.15094/00002822 | |||||
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) | |||||
著者名よみ |
イシズカ, ヒデオ
× イシズカ, ヒデオ× スズキ, サトコ× コジマ, ヒデヤス |
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著者名(英) |
ISHIZUKA, Hideo
× ISHIZUKA, Hideo× SUZUKI, Satoko× KOJIMA, Hideyasu |
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著者所属(英) | ||||||
en | ||||||
Department of Geology, Kochi University | ||||||
著者所属(英) | ||||||
en | ||||||
Department of Geology, Kochi University | ||||||
著者所属(英) | ||||||
en | ||||||
National Institute of Polar Research | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | In the Austkampane area of the S∅r Rondane Mountains, East Antarctica, a meta-ultramafic rock occurs as a lenticular block enclosed within the host garnet-biotite gneiss of the granulite facies. The rock consists of olivine, orthopyroxene, amphibole, spinel, apatite, ilmenite, magnetite, chalcopyrite and pentlandite. The bulk rock analysis shows an ultramafic composition in a broad sense, but compared with mantle peridotites it is enriched in TiO_2,Al_2O_3,CaO, Nb and Zr, and has a slightly high ratio of FeO^*/MgO. This suggests a slightly differentiated basaltic cumulate as its precursor. After the igneous generation, the rock was incorporated within the original rock of the host gneiss (sedimentary quartzo-feldspathic rock), probably in the form of block-in-matrix, and then both rocks underwent the granulite facies metamorphism. The olivine-spinel geothermometer and Al_2O_3 content of orthopyroxene indicate metamorphic temperatures of about 780-820℃ and 750-800℃, respectively. Similar meta-ultramafic rocks have been reported from the Lützow-Holm Complex, suggesting that the similar association of original rocks such as oceanic lower crusts developed in these two granulite terrains. | |||||
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 9, p. 40-48, 発行日 1996-09 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |