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

Mposkos, E (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 (EN)

Mineralogy (EN)

Geochemistry & Geophysics (EN)

National Technical University of Athens

Digital Library of National Technical University of Athens | Dspace@NTUA

Κεντρική Βιβλιοθήκη Ε.Μ.Π.

Ιδρυματικό Αποθετήριο

Δημοσιεύσεις μελών Δ.Ε.Π. σε περιοδικά

Mineralogy and Petrology (EN)

English

1989 (EN)

http://hdl.handle.net/123456789/10023

1 (EN)

25 (EN)

39 (EN)

10.1007/BF01164808 (EN)

0930-0708 (EN)

ISI:A1989CL99900003 (EN)

41 (EN)

Springer-Verlag (EN)