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Nd–Sr–Pb isotopes systematics of the Jurassic Evros ophiolite, eastern Circum-Rhodope Belt, NE Greece

Published online by Cambridge University Press:  30 January 2023

Nikolay Bonev Open the ORCID record for Nikolay Bonev [Opens in a new window] ,
Zornitsa Dotseva  and
Massimo Chiaradia
Nikolay Bonev*
Affiliation:
Department of Geology, Paleontology and Fossil Fuels, Sofia University St Kliment Ohridski, BG-1504 Sofia, Bulgaria
Zornitsa Dotseva
Affiliation:
Department of Geology, Paleontology and Fossil Fuels, Sofia University St Kliment Ohridski, BG-1504 Sofia, Bulgaria
Massimo Chiaradia
Affiliation:
Department of Earth Sciences, University of Geneva, CH-1205 Geneva, Switzerland
*
Author for correspondence: Nikolay Bonev, Email: [email protected]
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Abstract

We report on the isotopic compositions of the Jurassic supra-subduction zone Evros ophiolite mafic rocks exposed in the eastern Circum-Rhodope Belt of northeastern Greece. These mafic units consist of low-Ti gabbroic and basaltic rocks, whose Nd–Sr–Pb isotopes are compatible with dominant mantle-derived MORB component mixed with a detectable amount of crustal material and/or sediment invoved in their melt source in the subduction zone. These isotopic features are consistent with an intra-oceanic arc origin of the mafic ophiolite rocks, and the Evros ophiolite Nd and Pb isotopes are comparable to those of the counterpart mafic rocks from the Mandritsa unit in Bulgaria.

Keywords

whole-rock Nd–Sr–Pb isotopesEvros ophioliteCircum-Rhodope BeltGreece
Type
Rapid Communication
Information
Geological Magazine , Volume 160 , Issue 1 , January 2023 , pp. 198 - 205
Copyright
© The Author(s), 2023. Published by Cambridge University Press

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