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Quantitative structural analyses and numerical modelling of ...

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HEAT SOURCES AND EXHUMATION MECHANISMS 95(a) (b)Fig. 12. (a) Pseudosection for granulite sample H296-S1 (Blanský les Massif) to show the P–T path from the peak assemblage <strong>of</strong> g–ky–pl–ksp–q–liq–ru at 16 kbar <strong>and</strong> 860 °C bydecompression to 8 kbar <strong>and</strong> 820 °C (modified from Franeˇk et al., 2011b). Molar percentage <strong>of</strong> melt is very low <strong>and</strong> allows the preservation <strong>of</strong> the peak assemblage ondecompression <strong>and</strong> cooling. (b) Pseudosection for sample H296-S1 with 7 mol.% <strong>of</strong> melt added allows the stability <strong>of</strong> the mu–bi–pl–ksp–q assemblage at subsolidus conditions.Such a reconstructed granite whole-rock <strong>and</strong> mineral composition predicts 8 mol.% <strong>of</strong> melt at peak P–T conditions <strong>and</strong> 12 mol.% <strong>of</strong> melt at 8 kbar <strong>and</strong> 860 °C. Some melt mustbe lost to preserve the peak g–ky–pl–ksp–q–liq–ru assemblage.Ó 2010 Blackwell Publishing Ltd197

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