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Ultra-high temperature metamorphism in the Lewisian Complex, South Harris, NW Scotland
https://nipr.repo.nii.ac.jp/records/2340
https://nipr.repo.nii.ac.jp/records/23408f926cfa-ca00-47fe-b4f8-5d7b381e91d9
名前 / ファイル | ライセンス | アクション |
---|---|---|
KJ00000012892 (2.2 MB)
|
Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
---|---|---|---|---|---|---|
公開日 | 1998-12-01 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Ultra-high temperature metamorphism in the Lewisian Complex, South Harris, NW Scotland | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Lewisian Complex | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | sapphirine-bearing granulites | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | orthopyroxene-sillimanite/kyanite association | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | ultra-high temperature metamorphism | |||||
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 | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
論文名よみ | ||||||
その他のタイトル | Ultra-high temperature metamorphism in the Lewisian Complex, South Harris, NW Scotland | |||||
著者名(英) |
Baba, Sotaro
× Baba, Sotaro |
|||||
著者所属(英) | ||||||
en | ||||||
Department of Geosciences, Faculty of Science, Osaka City University | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Two types of sapphirine-bearing granulites have been found in South Harris, NW Scotland. Both indicate ultra-high temperature conditions (over 900℃). Sapphirine-bearing orthopyroxene-sillimanite granulite contains orthopyroxene+sillimanite+sapphirine+garnet±cordierite as the pre-stable assemblage, indicating P-T conditions of 930-980℃ and 8-9 kbar. The other type, sapphirine-bearing orthopyroxene-kyanite granulite, contains two types of orthopyroxene (porphyroblast and intergrowth with kyanite), and sapphirine inclusions within aluminosilicate (mainly sillimanite). The orthopyroxene porphyroblasts have Al_2O_3 up to 9.7 wt%, indicating P-T condition of 1000-1050℃ and 10-11 kbar, while orthopyroxene intergrown with kyanite only have Al_2O_3 up to 7.5 wt%, indicating P-T conditions of 900℃ and 12-14 kbar. The inferred P-T path, mainly based on the orthopyroxene-kyanite granulite, had an anticlockwise trajectory with sapphirine+quartz breaking down to produce sillimanite+orthopyroxene intergrowths, followed by the aluminosilicate transition from sillimanite to kyanite. This is the first record of such ultra-high temperature metamorphism in South Harris. The UHT metamorphism may be a significantly distinctive thermal event that will prove important in reconstruction of the evolutional history of the Lewisian Complex at Palaeoproterozoic period. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00733561 | |||||
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 53, p. 93-108, 発行日 1998-12 |