出版社:geodynamics Research International Bulletin Online
摘要:Almabulage complex with volcano-sedimentary rocks that have been affected by three metamorphism phases are outcropped in northwest of Sanandaj-Sirjan metamorphic zone. Petrography and mineralogy by XRD analysis show that minerals such as talc, chlorite, epidote and muscovite were formed in the first phase of metamorphism and tremolite, actinolite and biotite in the second phase. Second metamorphism phase is the peak metamorphism phase and is related to green-schist facies. Four phases of deformation were determined in this complex. The first and the second deformation phases were related to the first and the second metamorphism phases, respectively and were determined with different crenulations. The third deformation phase coincided with the intrusion of acid rocks that were formed in the subduction zone and caused dome, metasomatism, skarn, the third phase of retrograde metamorphism and iron mines in this complex. The fourth deformation phase is distinguishable with created brittle fault.