High-pressure metamorphism in gneisses and pelitic schists in the East Rhodope zone (N. Greece)

 
see the original item page
in the repository's web site and access all digital files if the item*
share




1989 (EN)
High-pressure metamorphism in gneisses and pelitic schists in the East Rhodope zone (N. Greece) (EN)

Mposkos, E (EN)

N/A (EN)

The high-alumina metapelites and the orthogneisses of the lower tectonic unit of East Rhodope underwent high P/T metamorphism followed by partial reequilibration during decompression under epidote-amphibolite/amphibolite facies to greenschist facies conditions. The high P/T mineral paragenesis in the orthogneisses is: quartz + albite + microcline + phengite (Simax = 7 atoms p.f.u.) + biotite and in the high alumina metapelites: garnet + chloritoid + chlorite + phengite (Simax. = 6.85 atoms p.f u.) + paragonite + quartz. Pressures between 14 and 15.5 kbar, for Tmin = 550°C, are estimated for the high P/T metamorphism. During continuing uplift, staurolite + chlorite, staurolite + biotite and finally andalusite + Fe-ripidolite are grown at the expense of chloritoid in metapelites, while in the orthogneisses oligoclase, still coexisting with albite, is formed; in both rock types the Si content of white K-mica decreases considerably from almost pure phengite to pure muscovite. © 1989 Springer-Verlag. (EN)

journalArticle

Εθνικό Μετσόβιο Πολυτεχνείο (EL)
National Technical University of Athens (EN)

Mineralogy and Petrology (EN)

1989


Springer-Verlag (EN)



*Institutions are responsible for keeping their URLs functional (digital file, item page in repository site)