EVOLUTION AND ORIGIN OF THE MARONIA PLUTON, THRACE, GREECE

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Published: Jan 1, 2004
DOI: https://doi.org/10.12681/bgsg.16754
L. Papadopoulou
Department of Mineralogy-Petrology-Economic Geology, School of Geology, Aristotle University of Thessaloniki
G. Christofides
Department of Mineralogy-Petrology-Economic Geology, School of Geology, Aristotle University of Thessaloniki
Α. Koroneos
Department of Mineralogy-Petrology-Economic Geology, School of Geology, Aristotle University of Thessaloniki
M. Bröcker
Institut für Mineralogie
T. Soldatos
Department of Mineralogy-Petrology-Economic Geology, School of Geology, Aristotle University of Thessaloniki
G. Eleftheriadis
Department of Mineralogy-Petrology-Economic Geology, School of Geology, Aristotle University of Thessaloniki
Abstract

The Maronia pluton is the youngest of the Tertiary plutons that occurred in Thrace. Three rock groups have been distinguished: a basic, an intermediate and an acid one. Based on geochemical and isotopie characteristics, the basic group probably represents a magma that isotopically equilibrated with the intermediate group at a certain point of its evolution. The evolution of the intermediate group can be described by an assimilation-fractional crystallization process (AFC). The acid group represents crustai melts that are not genetically related to the basic and intermediate groups. The emplacement of the pluton is related to post-collisional extension resulting from the subduction of the African under the European plate. The magma source of the basic and intermediate group is considered to be a LI LE- and LREE-enriched subcontinental lithospheric mantle. The acid group has probably derived by the partial melting of crustai rocks and in particular, gneiss.

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  • Petrology
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