The study of minerals chemistry, thermobarometry and tectonic setting of plutonic rocks from Sarabi Tueyserkan area (Hamedan province)

Sarabi area of Tueyserkan is located in Hamedan province which is a part of Sanandaj-Sirjan zone. Rocks of the area include igneous and metamorphic types in which the igneous rocks vary from gabbro to granite. The gabbros include olivine-gabbro, gabbro-norite, norite and gabbro. Considering different methods of thermometry for gabbros, the highest temperature belongs to olivine-gabbros which is about 1300 °C and the least temperature is about 950 °C for mafic rocks. Clinopyroxene-plagioclase barometry suggests nearly 6 Kbar pressure. Clinopyroxene, biotite and particularly amphibole were used to determine magma composition and tectonic setting. The results suggest a calc-alkaline to tholeiitic magma with approximately high oxygene fugacity during crystallization in a VAB tectonic setting.