P-T evolution and reaction textures in retrogressed eclogites from Svetlik, the Moldanubian Zone (Czech Republic)

Faryad, SW; Perraki, M; Vrana, S

dc.contributor.author	Faryad, SW	en
dc.contributor.author	Perraki, M	en
dc.contributor.author	Vrana, S	en
dc.date.accessioned	2014-03-01T02:44:08Z
dc.date.available	2014-03-01T02:44:08Z
dc.date.issued	2006	en
dc.identifier.issn	0930-0708	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/31703
dc.subject	Granulite Facies	en
dc.subject	Mass Balance	en
dc.subject	Czech Republic	en
dc.subject	Ultra High Pressure	en
dc.subject.classification	Geochemistry & Geophysics	en
dc.subject.classification	Mineralogy	en
dc.subject.other	HIGH-PRESSURE METAMORPHISM	en
dc.subject.other	BOHEMIAN MASSIF	en
dc.subject.other	CARBONACEOUS MATERIAL	en
dc.subject.other	ULTRAHIGH PRESSURES	en
dc.subject.other	TECTONIC EVOLUTION	en
dc.subject.other	SOLID-SOLUTION	en
dc.subject.other	RAMAN-SPECTRA	en
dc.subject.other	CLINOPYROXENE	en
dc.subject.other	GRANULITES	en
dc.subject.other	GRAPHITE	en
dc.title	P-T evolution and reaction textures in retrogressed eclogites from Svetlik, the Moldanubian Zone (Czech Republic)	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1007/s00710-006-0142-8	en
heal.identifier.secondary	http://dx.doi.org/10.1007/s00710-006-0142-8	en
heal.language	English	en
heal.publicationDate	2006	en
heal.abstract	Lenses and pods of mafic rocks from the Monotonous Unit near Svetlik are characterized by eclogite facies mineral assemblages; however some inclusion patterns (oriented quartz rods in clinopyroxene and cuboids of disordered graphite in garnet) that are usually known from ultra-high pressure rocks were also observed in one sample. Conventional thermobarometry yielded maximum P-T conditions of 2.0-2.5 GPa and 750°C. Decompression and heating at amphibolite and granulite facies conditions resulted in the formation of at least five distinct types of symplectites. These include symplectitic intergrowth of ilmenite and clinopyroxene after titanite, described here for the first time from the Moldanubian Zone. In addition, symplectites of plagioclase and biotite with accessory amounts of spinel after tabular pseudomorphs (after phengite?) are also reported here. Mass balance relations indicate that symplectites of diopside + plagioclase after omphacite and plagioclase + spinel (sapphirine) after kyanite + garnet, formed by nearly isochemical reactions. All other symplectite-forming reactions were allochemical and were accelerated by the presence of fluid in the primary phases. Preserved zoning pattern in garnet with high compositional gradient in some samples suggests that the rocks were affected briefly by granulite facies overprint. © Springer-Verlag 2006.	en
heal.publisher	SPRINGER WIEN	en
heal.journalName	Mineralogy and Petrology	en
dc.identifier.doi	10.1007/s00710-006-0142-8	en
dc.identifier.isi	ISI:000241174000015	en
dc.identifier.volume	88	en
dc.identifier.issue	1-2	en
dc.identifier.spage	297	en
dc.identifier.epage	319	en