Iranian plateau is a tectonically young complex region resulting from collision of Arabian Plate with Eurasia. Existence of three different subduction zones within different geographical parts provides different tectonic and geodynamic characteristics with the plateau. In this study, we use surface wave tomography method to image S-velocity structure of upper mantle and Moho depth variations across the Iranian plateau. Our results show that there is a clear evidence for subducting of Arabian plate beneath central Iran across the Zagros collisional zone in south-west Iran. Active subduction still occurs to the southeast of Iran where the oceanic part of Arabian plate is being subducted beneath Makran coast. The oceanic crust of South Caspian Basin is being westward under thrusting under Talesh and Alborz mountains in northern part of Iran


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