Universität zu Köln

Trapp, Svenja, Janak, Marian, Fassmer, Kathrin, Froitzheim, Nikolaus, Muenker, Carsten and Georgiev, Neven . Variscan ultra-high-pressure eclogite in the Upper Allochthon of the Rhodope Metamorphic Complex (Bulgaria). Terr. Nova. HOBOKEN: WILEY. ISSN 1365-3121

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Abstract

The Rhodope Metamorphic Complex (RMC) in Bulgaria has been established as a Mesozoic ultra-high-pressure metamorphic province by findings of microdiamond in gneisses. Additionally, Variscan ultra-high-pressure metamorphism has been proposed for the Ograzhden/Vertiskos Unit in the Upper Allochthon of the RMC, based on findings of coesite, graphite pseudomorphs after diamond and indirect age constraints. We confirm ultra-high-pressure metamorphism of eclogites in this unit using thermobarometry, phase-equilibrium modelling and the Variscan age of metamorphism using Lu-Hf garnet-whole-rock dating. In Belica (southern Rila Mountains), kyanite- and phengite-bearing eclogite enclosed in high-grade gneisses records P-T conditions of 3.0-3.5 GPa and 700-750 degrees C. Lu-Hf dating of eclogite samples from Belica and Gega (Ograzhden Mountain), where coesite was found, yielded ages of 334.1 +/- 1.8 and 334.0 +/- 2.2 Ma, respectively, interpreted as the age of garnet growth during post-collisional subduction of continental crust after closure of the Rheic Ocean.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Trapp, Svenja UNSPECIFIED UNSPECIFIED UNSPECIFIED Janak, Marian UNSPECIFIED UNSPECIFIED UNSPECIFIED Fassmer, Kathrin UNSPECIFIED UNSPECIFIED UNSPECIFIED Froitzheim, Nikolaus UNSPECIFIED UNSPECIFIED UNSPECIFIED Muenker, Carsten UNSPECIFIED UNSPECIFIED UNSPECIFIED Georgiev, Neven UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-311767
DOI:	10.1111/ter.12503
Journal or Publication Title:	Terr. Nova
Publisher:	WILEY
Place of Publication:	HOBOKEN
ISSN:	1365-3121
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language LU-HF; INTERNAL HELLENIDES; UHP METAMORPHISM; GARNET; MOUNTAINS; MAGMATISM; EVOLUTION; GONDWANA; DIAMOND; ROCKS Multiple languages Geosciences, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/31176