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 |
The nature of the Grenville-age charnockitic A-type magmatism from the Natal, Namaqua and Maud Belts of southern Africa and western Dronning Maud Land, Antarctica |
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 |
charnockite |
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 |
A-type |
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 |
Natal |
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 |
Dronning Maud Land |
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) |
Grantham,G.H.
Eglington,B.M.
Thomas, R.J.
Mendonidis, P.
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著者所属(英) |
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en |
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Council for Geoscience/Council for Geoscience/Council for Geoscience/Department of Metallurgy, Vaal Triangle Technikon |
抄録(英) |
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内容記述タイプ |
Other |
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内容記述 |
The ∿1030-1090Ma old, locally charnockitic, intrusions which are exposed from Namaqualand in the west, through Natal, into the Maud Province Antarctica in the east, show A-type, within plate granite characteristics. The major and trace element characteristics from all the intrusions are remarkably similar and consistent and are typical of C-Type charnockites. Two-pyroxene thermometry as well as thermometry utilising calibrations from experimental studies of saturation surfaces using Zr, P and Ti suggest temperatures between ∿850℃ and ∿1100℃. Pressure estimates from aureole assemblages suggest depths of emplacement between 30-10km. Available isotopic data suggest magma sources in Natal and Antarctica were juvenile, probably mantle derived whereas those in Namaqualand suggest a significant crustal contribution. |
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. 59-86,
発行日 2001-07
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