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Title

Petrogenesis of the cenozoic Meghri-Ordubad pluton, southernmost Lesser Caucasus: implications for the formation of large porphyry Cu-Mo(-Au) systems during the Arabia-Eurasia accretionary orogenesis

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Defense Thèse de doctorat : Univ. Genève, 2017 - Sc. 5119 - 2017/08/31
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.
Keywords Lesser CaucasusOre depositsMagmatismPetrologyGeochemistryGeochronologyPetrographyArmeniaTethyan orogenic beltSubductionCollisionPost-collision
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URN: urn:nbn:ch:unige-986835
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Research group Mineral Resources and Geofluids
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REZEAU, Hervé. Petrogenesis of the cenozoic Meghri-Ordubad pluton, southernmost Lesser Caucasus: implications for the formation of large porphyry Cu-Mo(-Au) systems during the Arabia-Eurasia accretionary orogenesis. Université de Genève. Thèse, 2017. https://archive-ouverte.unige.ch/unige:98683

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Deposited on : 2017-11-08

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