Geothermobarometry of Tekieh intrusive complex (south of Qorveh, Kurdistan Province): Constraint on using mineral chemistry of amphibole

The Tekieh intrusive complex is located in S-Qorveh in northern parts of the Sanandaj-Sirjan Zone. In this collection, the granite inclusions located in the granite host compound have a diorite composition and the inclusions located in the monzonite host compound have a gabbroic composition. The enclaves are scattered in rounded and elliptical shapes in the host rocks. Generally, they have a sudden contact with the host rock and are composed of igneous minerals. Amphiboles are calcic-type, and their composition is magnesio-hornblende and actinolite. The plagioclases have a range of composition from oligoclase to andesine and oligoclase to bytownite for host rock and enclaves samples, respectively. Based on geothermobarometry studies on amphiboles and also amphibole-plagioclase pairs, the temperatures of 660-5540C and 742-5920C with pressure ranges of 0.3 to 3.62 and 0.21 to 1.8 Kbar were estimated for host rock and diorite enclaves samples, respectively. Oxygen fugacity was high in magma that is consistent with calc-alkaline nature and the formation of rocks in its subduction setting.