Cordierite breakdown under high-pressure hydrous conditions |
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| Authors: | Sang Man Lee M J Holdaway |
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| Institution: | (1) Department of Geological Sciences, Southern Methodist University, 75275 Dallas, Texas, USA;(2) Present address: Department of Geology, College of Natural Sciences, Seoul National University, Seoul, Korea |
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| Abstract: | Green and Vernon (1974) have experimentally determined a divariant field of cordierite-orthoamphibole-kyanite-quartz with a slope of 12±4 bars per °C occurring between 8.0 and 10.4 kbar at 750° C and between 9.5 and 11.3 kbar at 850° C. However, the writers' thermodynamic calculation of the divariant band indicates a more limited range of 0.65 and 0.7 kbar at 750° C and 850° C respectively, with an estimated error of ±0.2 kbar. |
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