Petrogenetic and tectonic aspects of collisional granitoids from the Sanandaj-Sirjan Belt of Iran

Hajialioghli, Robab and Moazzen, Mohssen (2012) Petrogenetic and tectonic aspects of collisional granitoids from the Sanandaj-Sirjan Belt of Iran. Central European Geology, 55 (1). pp. 85-102. ISSN 1788-2281

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Abstract

Abstract The Sanandaj-Sirjan granitoids (SSG) in western Iran are composed mainly of granite, granodiorite and tonalite. Chemically the rocks are peraluminous and metaluminous, and show S-and I-type characteristics. The oval shape of the plutons, with large axes parallel to the Zagros main trend, along with deformational textures and structures, the existence of aluminous minerals such as andalusite, garnet and sillimanite as well as micaceous enclaves and geochemical features, all support generation of these rocks by partial melting of heterogeneous source materials in a continental collision setting, corresponding to the Zagros Orogen.

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