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Nd–Sr–Pb isotopic composition and mantle sources of Triassic rift units in the Serbo-Macedonian and the western Rhodope massifs (Bulgaria–Greece)

Published online by Cambridge University Press:  26 September 2011

NIKOLAY BONEV ,
YILDIRIM DILEK ,
JOHN M. HANCHAR ,
KAMEN BOGDANOV  and
LASLO KLAIN
NIKOLAY BONEV*
Affiliation:
Department of Geology, Palaeontology and Fossil Fuels, Sofia University St Kliment Ohridski, BG-1504 Sofia, Bulgaria
YILDIRIM DILEK
Affiliation:
Department of Geology, Miami University, Oxford, OH 45056, USA
JOHN M. HANCHAR
Affiliation:
Department of Earth Sciences, Memorial University of Newfoundland, St John's, NL A1B 3X5, Canada
KAMEN BOGDANOV
Affiliation:
Department of Mineralogy, Petrology and Economic Geology, Sofia University St Kliment Ohridski, BG-1504 Sofia, Bulgaria
LASLO KLAIN
Affiliation:
Department of Geology, Palaeontology and Fossil Fuels, Sofia University St Kliment Ohridski, BG-1504 Sofia, Bulgaria
*
†Author for correspondence: [email protected]
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Abstract

We report on the field occurrence and isotopic compositions of metamafic rocks exposed in the Serbo-Macedonian (Volvi and Therma bodies) and western Rhodope (Rila Mountains) massifs of Bulgaria and Greece. These metamafic units consist of high- and low-Ti gabbroic and basaltic rocks, whose Nd–Sr–Pb isotopes are compatible with mantle-derived MORB and OIB components with a small amount of crustal material involved in their melt source. These isotopic features combined with the field observations are consistent with an intra-continental rift origin of the metamafic rocks protolith, and are comparable to those of the Triassic rift-related mafic rocks in the northern Aegean region.

Keywords

metamafic rockswhole-rock Nd–Sr–Pb isotopesTriassic riftingSerbo-Macedonian–Rhodope massifsBulgariaGreece
Type
Rapid Communication
Information
Geological Magazine , Volume 149 , Issue 1 , January 2012 , pp. 146 - 152
Copyright
Copyright © Cambridge University Press 2011

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