Blueschist-to-greenschist transition and the P-T path of prasinites from the Lavrion area, Greece

Baltatzis, E

dc.contributor.author	Baltatzis, E	en
dc.date.accessioned	2014-03-01T01:45:04Z
dc.date.available	2014-03-01T01:45:04Z
dc.date.issued	1996	en
dc.identifier.issn	0026-461X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/24541
dc.subject	blueschist	en
dc.subject	greenschist	en
dc.subject	prasinite	en
dc.subject	P-T path	en
dc.subject	Lavrion	en
dc.subject	Greece	en
dc.subject.classification	Mineralogy	en
dc.subject.other	EPIDOTE QUARTZ GEOTHERMOBAROMETER	en
dc.subject.other	CA-AMPHIBOLE	en
dc.subject.other	SYSTEM S-A-F-M-C-N-H2O	en
dc.subject.other	SIFNOS CYCLADES	en
dc.subject.other	METABASIC ROCKS	en
dc.subject.other	PRESSURE	en
dc.subject.other	METAMORPHISM	en
dc.subject.other	EXHUMATION	en
dc.subject.other	ISLAND	en
dc.title	Blueschist-to-greenschist transition and the P-T path of prasinites from the Lavrion area, Greece	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	1996	en
heal.abstract	The Lavrion area is part of the Attic-Cycladic massif. Blue amphibole analyses revealed that they are glaucophane or ferroglaucophane. Ca-amphiboles are characterized as actinolite or actinolitic hornblende. The Ps component of epidotes from the glaucophane-bearing rocks varies from 25.42-30.89%, whereas the Ps component of epidotes from the greenschist assemblages ranges from 23.81-26.88%. Chlorites show narrow compositional variations of ferromagnesian ratios (X(mg)=0.48-0.53). Albites are almost pure Ab(100). The K-feldspar present has a low Ab content. The evolution of the prasinites studied is characterized by the progressive transformation of eclogite facies (?) rocks through epidote blueschists into greenschists. A P-T path for the prasinites is presented indicating epidote blueschist facies at P-T conditions of around 7.0-7.5 kbar and 300-340 degrees C. Pressures of 4.0-3.5 kbar and temperatures around 340-360 degrees C are estimated for the subsequent overprint in the greenschist facies. The path EBS to GS conditions followed under nearly isothermal uplift.	en
heal.publisher	MINERALOGICAL SOCIETY	en
heal.journalName	MINERALOGICAL MAGAZINE	en
dc.identifier.isi	ISI:A1996VA41900002	en
dc.identifier.volume	60	en
dc.identifier.issue	401	en
dc.identifier.spage	551	en
dc.identifier.epage	561	en