Mineral chemistry and P-T conditions of the adakitic rocks from Torud-Ahmad Abad magmatic belt, S-SE Shahrood, NE Iran

Amphibole geothermobarometry suggests crystallization temperatures of 850-1050 °C, at 2-6 kbar and the temperature of 920-970 °C, at a pressure of 3-4.5 kbar, which are conditions in agreement with andesite and dacite formation. Clinopyroxene crystallized at temperatures of 1020-1170 °C, at 2-10 kbar, indicating crystallization at crustal depths of maximum 30 km for the studied intrusive rocks in the Torud-Ahmad Abad magmatic belt.