Is quartz a potential indicator of ultrahigh-pressure metamorphism? Laser Raman spectroscopy of quartz inclusions in ultrahigh-pressure garnets

Korsakov, AV; Perraki, M; Zhukov, VP; De Gussem, K; Vandenabeele, P; Tomilenko, AA

dc.contributor.author	Korsakov, AV	en
dc.contributor.author	Perraki, M	en
dc.contributor.author	Zhukov, VP	en
dc.contributor.author	De Gussem, K	en
dc.contributor.author	Vandenabeele, P	en
dc.contributor.author	Tomilenko, AA	en
dc.date.accessioned	2014-03-01T01:30:58Z
dc.date.available	2014-03-01T01:30:58Z
dc.date.issued	2009	en
dc.identifier.issn	0935-1221	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19694
dc.subject	3-shell elastic model	en
dc.subject	Coesite	en
dc.subject	Diamond	en
dc.subject	Quartz	en
dc.subject	Raman spectroscopy	en
dc.subject	Residual pressure	en
dc.subject	UHPM petrology	en
dc.subject.classification	Mineralogy	en
dc.subject.other	coesite	en
dc.subject.other	crystal structure	en
dc.subject.other	diamond	en
dc.subject.other	garnet	en
dc.subject.other	kimberlite	en
dc.subject.other	metapelite	en
dc.subject.other	quartz	en
dc.subject.other	Raman spectroscopy	en
dc.subject.other	ultrahigh pressure metamorphism	en
dc.subject.other	xenolith	en
dc.subject.other	Kazakhstan	en
dc.subject.other	Kokchetav	en
dc.subject.other	Russian Federation	en
dc.subject.other	Sakha	en
dc.title	Is quartz a potential indicator of ultrahigh-pressure metamorphism? Laser Raman spectroscopy of quartz inclusions in ultrahigh-pressure garnets	en
heal.type	journalArticle	en
heal.identifier.primary	10.1127/0935-1221/2009/0021-2006	en
heal.identifier.secondary	http://dx.doi.org/10.1127/0935-1221/2009/0021-2006	en
heal.language	English	en
heal.publicationDate	2009	en
heal.abstract	Laser Raman microspectroscopy was applied to quartz inclusions in coesite- and diamond-grade metapelites from the Kokchetav ultrahigh-pressure metamorphic (UHPM) complex, Northern Kazakhstan, and diamond-grade eclogite xenoliths from the Mir kimberlite pipe, Yakutiya, Russia to assess the quantitative correlation between the Raman frequency shift and metamorphic pressure. Quartz crystals sealed in garnets have a higher frequency shift than those in the matrix. Residual pressures retained by quartz inclusions depend on the metamorphic history of the gamet host. The Raman frequency shift of quartz inclusions in garnet from coesite-grade and diamond-grade metamorphic rocks shows no systematic change with increasing peak metamorphic pressures. The highest shifts of the main Raman bands of quartz were documented for monocrystalline quartz inclusions in garnets from a diamond-grade eclogite xenolith. Calibrations based on experimental work suggest that the measured Raman frequency shifts signify residual pressures of 0.1-0.6 GPa for quartz inclusions from coesite-grade metapelites from Kokchetav, 0.1-0.3 GPa for quartz inclusions from diamond-grade metapelites from Kokchetav, and 1.0-1.2 GPa for quartz inclusions from the diamondgrade eclogite xenoliths from the Mir kimberlite pipe. Normal stresses and internal (residual) pressures of quartz inclusions in gamet were numerically simulated with a 3-shell elastic model. Estimated values of residual pressures are inconsistent with the residual pressures estimated from the frequency shifts. Residual pressure slightly depends on P-T conditions at peak metamorphic stage. Laser Raman microspectroscopic analysis of quartz is a potentially powerful method for recovering an ultrahigh pressure metamorphic event. Monocrystalline quartz inclusions yielding a residual pressure greater than 2.5 GPa might indicate the presence of a former coesite. © 2009 E. Schweizerbart'sche Verlagsbuchhandlung,.	en
heal.publisher	E SCHWEIZERBARTSCHE VERLAGS	en
heal.journalName	European Journal of Mineralogy	en
dc.identifier.doi	10.1127/0935-1221/2009/0021-2006	en
dc.identifier.isi	ISI:000274438400015	en
dc.identifier.volume	21	en
dc.identifier.issue	6	en
dc.identifier.spage	1313	en
dc.identifier.epage	1323	en