The study of geochemistry and petrogensis of the Hasansalaran granitoids (SE Saqqez)

Subject Areas :

علی Pournouroz ¹ , M.H Emami ² , S.J SHikh-Zakariaei ³

1 - دانش آموخته کارشناسی ارشد دانشگاه آزاد اسلامی واحد علوم تحقیقات تهران
2 - عضو هیئت علمی دانشگاه آزاد اسلامی واحد اسلامشهر
3 - عضو هیئت علمی دانشگاه آزاد اسلامی واحد علوم تحقیقات تهران

Received: 2016-09-06 Accepted : 2016-09-06 Published : 2010-06-22

Keywords: defration, extentional within plate zone, subduction, Collision,

Abstract :

Hasansalaran granitoid is located in structural Sanandaj–Sirjan zone. This granitoid share towparts: a) northern part, b) southern part, northern part is composed of biotite and hornblandgranite, granodiorite and tonalite. In this Granitoid, ther are microgranular enclaves that arecomposed of quartzdiorite and tonalite and they have circular or ellipsoidal shapes. These rockshave granular, porphyritic and graphic texture and secondary textures are kataclastic and milonitic texture.Southern part composed of alkali feldspar granite, alkali syenite and quartz syenite that theyhave show granular matrix and pertite.The northern parts of Hasansalaran granitoid share all the geochemical features common toI – type granites. these granites are related with active continental margin zone. Southern partsare A – type and related with rifts. According to isotopic study Southern parts are older thanNorthern parts. Variation of major and trace elements shows magmatic differentiation, somewhat crustal contamination in northern part of studies area.