Founded 1934 by Prof. Dr Stefan Bončev
A Geo-Sciences Journal of the Geological Institute “Strashimir Dimitrov”, Bulgarian Academy of Sciences
Official Journal of the Carpathian-Balkan Geological Association

A review of magmatic crystallization ages and cooling ages of the Evros ophiolite, eastern Circum-Rhodope Belt, NE Greece

Pages: 
pp. 3-11
Nikolay Bonev
Department of Geology, Palaeontology and Fossil Fuels, Sofia University “St. Kliment Ohridski”, 1504 Sofia; Bulgarian Academy of Sciences, 1040 Sofia, Bulgaria
Abstract: 

The Circum-Rhodope Belt is a major tectonic unit that surrounds both the Rhodope and the Serbo-Macedonian zones of the Alpine orogen in the northern Aegean region. The arc-related, supra-subduction zone Evros ophiolite represents the most important crustal element in the eastern part of the Circum-Rhodope Belt. A new U-Pb LA-ICP-MS zircon magmatic crystallization age of 174.6 ± 1.8 Ma obtained for the Agriani gabbro, together with the reviewed crystallization ages of other magmatic bodies reveal that the magmatic history of the Evros ophiolite spans 176 Ma to 169 Ma time interval. Reviewed ages of the medium to lowtemperature cooling history from 550 °C (40Ar/39Ar amphibole) down to 120 °C (fission-track apatite) show that it immediately followed the magmatic crystallization starting around 174 Ma and continued up to 140 Ma for the Evros ophiolite.

Keywords: 

Evros ophiolite, U-Pb zircon geochronology, Circum-Rhodope Belt, Greece

DOI: 
10.52321/GeolBalc.55.1.3
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VOLUME 55 (1)/April 2026

DETAILS

Nikolay Bonev
Department of Geology, Palaeontology and Fossil Fuels, Sofia University “St. Kliment Ohridski”, 1504 Sofia; Bulgarian Academy of Sciences, 1040 Sofia, Bulgaria

A review of magmatic crystallization ages and cooling ages of the Evros ophiolite, eastern Circum-Rhodope Belt, NE Greece

Antoaneta Frantzova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
|
Plamen Ivanov
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
|
Nikolai Dobrev
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
|
Boyko Berov
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
|
Miroslav Krastanov

Comparative analysis of risk assessment methodologies: example of some various specific natural disasters along the southern Bulgarian Black Sea coast

William A. P. Wimbledon
School of Earth Sciences, University of Bristol, Wills Memorial Building, Queens Road, Bristol BS8 1RJ, United Kingdom
|
Daniela Reháková
Department of Geology and Paleontology, Faculty of Natural Sciences, Comenius University, Ilkovičova 6, 84215 Bratislava, Slovakia
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Silviya Petrova
Geological Institute, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., Bl. 24, 1113 Sofia, Bulgaria
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Camille Frau
Groupement d’Intérêt Paléontologique, Science et Exposition, 60 bd Georges Richard, 83000 Toulon, France
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Diego A. Kietzmann
Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Ciencias Geológicas, Ciudad Universitaria, Pabellón II, Intendente Güiraldes 2160, C1428EHA Ciudad Autónoma de Buenos Aires, Argentina
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Rafael López-Martínez
Instituto de Geología, Universidad Nacional Autónoma de México, Ciudad Universitaria, Delegación Coyoacán, C.P. 04510, México D.F., Mexico

The calpionellid crisis - the defining marker for the Jurassic/Cretaceous boundary in all continents

Mariana Yossifova
Geological Institute, Bulgarian Academy of Sciences, “Acad. Georgi Bonchev” Str., Bl. 24, 1113 Sofia, Bulgaria
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Greta Eskenazi
Faculty of Geology and Geography, Sofia University “St. Kl. Ohridski”, Tzar Osvoboditel Str. 15, 1504 Sofia, Bulgaria

On the organic affinity of germanium in peat and coals: аn experimental approach

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