Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
1995-09-01 |
タイトル |
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タイトル |
PERIDOTITES FROM THE SEAMOUNT OFF WILKES LAND, 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 |
10.15094/00002794 |
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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) |
論文名よみ |
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その他のタイトル |
PERIDOTITES FROM THE SEAMOUNT OFF WILKES LAND, ANTARCTICA |
著者名よみ |
ニイダ, キヨアキ
ユアサ, マコト
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著者名(英) |
NIIDA, Kiyoaki
YUASA, Makoto
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著者所属(英) |
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en |
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Department of Earth and Planetary Sciences, Graduate School of Science, Hokkaido University |
著者所属(英) |
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en |
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Geological Survey of Japan |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
Dredged peridotite-pyroxenite samples from Antarctic Seamount B were examined to clarify the petrological signature. It is suggested from the tectonic setting that the emplacement of the peridotites was achieved by uplifting of upper mantle materials generated as a pre-oceanic rifting at the early stage of continental breakup between Antarctica and Australia. The Seamount B lherzolites contain a large volume of clinopyroxenes (6.5-12.9 modal%) and spinels (2.0-2.9 modal%). The Fo content in olivines ranges between 89.5 and 92.3. The spinels are highly aluminous (Cr#=7.8-15.7). Notably, the clinopyroxenes contain high Na_2O (1.24-2.35 wt%) and TiO_2 (0.27 to 0.85 wt%). The modal composition and mineral chemistry suggest that the Seamount B lherzolites display a 'fertile' subcontinental mantle signature ranging from the least to moderately depleted peridotite. |
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 8,
p. 169-180,
発行日 1995-09
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出版者 |
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出版者 |
National Institute of Polar Research |