Item type |
紀要論文(ELS) / Departmental Bulletin Paper(1) |
公開日 |
2001-07-01 |
タイトル |
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言語 |
en |
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タイトル |
New evidence for prograde metamorphism and partial melting of Mg-Al-rich granulites from western Namaqualand, South Africa |
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 |
Namaqualand |
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 |
granulite facies |
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 |
cordierite-phlogopite gneiss |
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 |
sillimanite pseudomorph after andalusite |
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 |
spinel-cordierite corona |
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 |
partial melting |
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 |
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) |
Hiroi, Yoshikuni
Hokada, Tomokazu
Beppu, Masaaki
Motoyoshi, Yoichi
Shimura, Toshiaki
Yuhara, Masaki
Shiraishi, Kazuyuki
Grantham, Geoffrey H.
Knoper, Mike W.
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著者所属(英) |
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en |
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Department of Earth Sciences, Faculty of Science, Chiba University/Department of Crustal Studies, National Institute of Polar Research/Department of Earth Sciences, Faculty of Science, Chiba University/Department of Crustal Studies, National Institute of Polar Research/Department of Geology, Faculty of Science, Niigata University/Department of Earth System Science, Faculty of Science, Fukuoka University/Department of Crustal Studies, National Institute of Polar Research/Council for Geoscience/Department of Geology, Rand Afrikaans University |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
Cordierite-phlogopite gneiss with spectacular coarse pseudomorphs of sillimanite after andalusite occurs as a kind of Mg-Al-rich rock in the Dabeeb-Hytkoras area of the granulite-faces western Namaqualand Metamorphic Complex. The sillimanite pseudomorphs are always fringed by spinel-cordierite coronas, which, in turn, are surrounded by cordierite mono-mineral zones. The spinel-cordierite coronas include minor amounts of sapphirine, corundum and rutile. The matrix comprises mainly cordierite and phlogopite with minor plagioclase and orthopyroxene plus a trace of quartz. Orthopyroxene is often replaced partially by symplectitic intergrowths of phlogopite and quartz. The modes of occurrence and chemical compositions of minerals indicate that the rock followed a prograde metamorphic P-T path from the andalusite to the sillimanite stability fields and a subsequent isobaric cooling path and that partial melting took place during granulite-facies metamorphism resulting in its present geochemical character. |
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 |
AA00733561 |
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue
巻 55,
p. 87-104,
発行日 2001-07
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