Geodynamics of the Neo-Tethys arc and associated porphyry copper mineralization in Iran

AUTHORS: Asadi Haroni, H., Aiaty, F.

ABSTRACT: The Zagros Orogenic Belt (ZOB) is part of the Alpine-Himalayan orogenic and metallogenic belt and extends in a NW-SE direction throughout Iran. The ZOB is divided into three parallel geological subdivisions of the Urumieh-Dokhtar Magmatic Arc (UDMA), the Sanandaj-Sirjan Zone and the Zagros Folded Belt. The evidence from country-scale integration of aeromagnetic, geological and mineral occurrence data and trace element analysis of the UDMA rocks supports a subduction model, associated with the closure of the Neo-Tethys ocean, for the origin of the ZOB. Two types of Cu-Mo and Cu-Au porphyry mineralizations are found along the UDMA. The Cu-Mo porphyry type is very common and mostly found in the SE and NW of the UDMA. Whereas, the Cu-Au porphyry type is quite rare and only one prospect (Dalli) has been recently discovered in the central UDMA. The magmatic rocks at the vicinity of the Dalli prospect shows a calk-alkaline affinity.

KEYWORDS: Neo-Tethys, Iran, Porphyry Copper, Data Integration

EAN: SGA_2007_A030
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