The Ghohroud granitoid complex, located southwest of Kashan in the central part of the Urumieh–Dokhtar Magmatic Arc (UDMA), mainly consists of granodiorite–tonalite rocks hosting mafic microgranular enclaves (MMEs) with compositions ranging from gabbrodiorite to tonalite. The main mineral assemblage includes amphibole, biotite, plagioclase, and alkali feldspar. Mineral chemistry indicates that plagioclase is andesine, amphiboles are Mg-rich hornblende, and biotites are also magnesium-rich. Amphiboles show relatively high Fe³⁺/(Fe³⁺ + Fe²⁺) ratios, while magmatic ones are characterized by low total Al and Fe/(Fe + Mg) ratios, suggesting crystallization under moderately oxidizing conditions. Oxygen fugacity (ƒO₂), calculated relative to the nickel–nickel oxide (NNO) buffer, ranges from 10⁻12 to 10⁻14 bar (ΔNNO +1.23) in tonalitic samples, and from 10⁻14 to 10⁻16 bar (ΔNNO +0.34) in granodioritic rocks and their associated enclaves. Thermobarometric calculations based on calcic amphiboles yield maximum pressures of about 4.39 kbar at 800 °C for tonalites, and around 3.89 kbar at 750 °C for granodiorites and their enclaves, corresponding to amphibole crystallization depths around ~12-16 km. Primary biotites in the Ghohroud granitoids crystallized slightly later, at 690–784 °C (average ~712 °C).