STABILITY OF OSUMILITE IN GRANULITE FACIES METAMORPHISM : KMAS SYSTEM AND NATURAL OCCURRENCES
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概要
- 論文の詳細を見る
The stability relation of osumilite in granulite facies rocks is evaluated in the light of the recent study of osumilite-bearing granulites in the Paradise River area, Laborador, Canada (M. ARIMA and C. F. GOWER : Geol./Mineral. Assoc. Canada, Program with Abst., 10,1987; to be publ. in J. Petrol., 1990) The mineral parageneses in the Paradise River granulites indicate that osumilite is stable at temperatures lower than those required for sapphirine-quartz stability. The P-T grid deduced from the Paradise River occurrence is in accordance with that proposed by E. S. GREW (Am. Mineral., 67,762,1982) for osumilite-sapphirine-quartz granulites in the Napier terrane, Antarctica. This conclusion is supported by high pressure experimental results in the KMAS system which suggest that osumilite is stable at temperatures lower than the univariant reaction En+Sil=Sa+Q.
- 国立極地研究所の論文
著者
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Motoyoshi Yoichi
National Institute of Polar Research
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Shiraishi Kazuyuki
National Institute of Polar Research
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ARIMA Makoto
Geological Institute, Yokohama National University
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Arima M
Yokohama National Univ. Yokohama Jpn
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Arima Makoto
Geological Institute Yokohama National University
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Motoyoshi Y
National Inst. Polar Res. Tokyo Jpn
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Arima Makoto
Geological Institute Graduate School Of Environment And Information Sciences Yokohama National Unive
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Shiraishi Kazuyuki
Department Of Crustal Studies National Institute Of Polar Research
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