Middle Eocene magmatism in the Khur region (Lut Block, Eastern Iran): implications for petrogenesis and tectonic setting

The Khur region is located in the Late Mesozoic-Cenozoic volcanic-plutonic rocks of the Lut Block, eastern Iran. There are several outcrops of subvolcanic rocks in the region which occur mainly as dike (granitoid and mafic dikes) and stock (monzonite porphyry). Volcanic rocks (basaltic andesites, andesites, trachyandesites, dacites and rhyodacites) are also abundant and cover pyroclastic rocks. U–Pb zircon ages indicate that granitic-dioritic...