Garnet-bearing rhyolite from Deh-Salm area, Lut block, Eastern Iran: anatexis of deep crustal rocks

Rhyolite from the Deh Salm area, Lut block, Iran, is a 10-km-long flow unit that crops out as a 6-m thick sub-horizontal sheet (25 km) crustal-derived peraluminous magma. It is likely that the peraluminous feature of the magma, inherited from partial melting of metapelitic source rocks, has favoured...

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Bibliographic Details
Published in:Mineralogy and petrology 2008-11, Vol.94 (3-4), p.259-269
Main Authors: Mirnejad, H., Blourian, G. H., Kheirkhah, M., Akrami, M. A., Tutti, F.
Format: Article
Language:English
Subjects:
Crystallization
Crystallography
Crystals
Earth and Environmental Science
Earth Sciences
Electron microscopes
Geochemistry
Inorganic Chemistry
Magma
Metamorphic rocks
Mineralogy
Original Paper
Petrology
Quartz
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Summary:Rhyolite from the Deh Salm area, Lut block, Iran, is a 10-km-long flow unit that crops out as a 6-m thick sub-horizontal sheet (25 km) crustal-derived peraluminous magma. It is likely that the peraluminous feature of the magma, inherited from partial melting of metapelitic source rocks, has favoured crystallization of garnet. Upon rising to higher levels, the garnet phases were in equilibrium with the host magma and thus were preserved as relatively large euhedral crystals in the Deh-Salm rhyolite.
ISSN:0930-0708
1438-1168
DOI:10.1007/s00710-008-0015-4