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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)

  • NIKOLAY BONEV (a1), YILDIRIM DILEK (a2), JOHN M. HANCHAR (a3), KAMEN BOGDANOV (a4) and LASLO KLAIN (a1)...

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.

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Corresponding author

Author for correspondence: niki@gea.uni-sofia.bg

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Keywords

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

  • NIKOLAY BONEV (a1), YILDIRIM DILEK (a2), JOHN M. HANCHAR (a3), KAMEN BOGDANOV (a4) and LASLO KLAIN (a1)...

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