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Ultrahigh temperature sapphirine-osumilite and sapphirine-quartz granulites from Bunt Island in the Napier Complex, East Antarctica -Reconnaissance estimation of P-T evolution -
https://doi.org/10.15094/00003082
https://doi.org/10.15094/0000308263a7ad83-fd3b-4444-8e50-f695beaa70b8
名前 / ファイル | ライセンス | アクション |
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KJ00000044200 (4.4 MB)
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Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
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公開日 | 2001-10-01 | |||||
タイトル | ||||||
タイトル | Ultrahigh temperature sapphirine-osumilite and sapphirine-quartz granulites from Bunt Island in the Napier Complex, East Antarctica -Reconnaissance estimation of P-T evolution - | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | sapphirine | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | osumilite | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | P-T path | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Bunt Island | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Napier Complex | |||||
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 | 10.15094/00003082 | |||||
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) |
Osanai, Yasuhito
× Osanai, Yasuhito× Toyoshima, Tsuyoshi× Owada, Masaaki× Tsunogae, Toshiaki× Hokada, Tomokazu× Crowe, Warwick A.× Kusachi, Isao |
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著者所属(英) | ||||||
en | ||||||
Department of Earth Sciences, Okayama University/Department of Geology, Niigata University/Department of Earth Sciences, Yamaguchi University/Institute of Geoscience, University of Tsukuba/National Institute of Polar Research/Department of Geology and Geophysics, University of Western Australia/Department of Earth Sciences, Okayama University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | The summer party of the 39th Japanese Antarctic Research Expedition (1997-1998) carried out geological field work on Bunt Island at the southeastern end of Amundsen Bay, Enderby Land, which is in the highest-grade metamorphic region in the Napier Complex. The island is underlain by various kinds of ultrahigh-temperature (UHT) metamorphic rocks including osumilite-bearing aluminous sapphirine-garnet-orthopyroxene granulite and quartz-predominant sapphirine-garnet-sillimanite gneiss containing the assemblage sapphirine-quartz. Osumilite-bearing aluminous granulite is silica-undersaturated, aluminous and magnesian chromium-rich chemical affinity. Osumilite-bearing granulite from Bunt Island could be formed through the mixing of clayey materials or other felsic components derived from felsic igneous rocks with a relatively high proportion of mafic to ultramafic detritus in the sedimentary precursor. The chemical mixing could have taken place during c. 3.2 and c. 2.5 Ga. P-T estimation for osumilite-bearing granulite and related sapphirine-quartz gneiss indicates ultrahigh-temperature condition (~1100℃, ~1100 Mpa) as well as other high-grade rocks from the Napier Complex, but the rocks from Bunt Island clearly show isothermal decompression in part of the clockwise P-T evolutional process. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA1130866X | |||||
書誌情報 |
Polar geoscience 巻 14, p. 1-24, 発行日 2001-10 |
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出版者 | ||||||
出版者 | National Institute of Polar Research |