Abstract

This thesis composed of four chapters aims at establishing (1) a better general understanding between the magmatism and the formation of Cu-Mo(-Au) ore deposits, (2) a petrogenetic model for the composite Meghri-Ordubad pluton incrementally assembled over 30 m.y. and associated with ore-forming pulses. The multi-disciplinary approach allows to reveal a very complex magmatic-hydrothermal system operating over several tens of million years, which is very attractive to investigate the magmatic evolution in a geodynamic framework linked to the Alpine orogenesis and more specifically related to the closure of the Neotethys during the final convergence of the Arabian toward the Eurasian plate leading to a continental collision followed by a progressive post-collisional relaxation along the Turkish-Iranian plateau. Finally, the link with the formation of ore deposits allows us to assess optimal magmatic, tectonic and hydrothermal conditions leading to the formation of large economic resources.

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