Document Type : Original Research Paper
Authors
1 Associate Professor, Department of Geology, Islamic Azad University, Islamshahr Branch, Tehran, Iran
2 M. Sc., Research Institute for Earth Sciences, Geological survey of Iran, Tehran, Iran
Abstract
Mylonitic granite-granodiorites of Nowghan shear zone extend in NW-SE trend in the metamorphic rocks of the southwest Golpayegan. Different outcrops of mylonitic bodies have been studied in order to investigate the origin of granitoid rocks in Nowghan shear zone and determined their tectonic setting in Sanandaj-Sirjan zone. Field evidence, mineralogy and geochemical data suggest that the mylonitic rocks have S-type and strongly peraluminous characteristics. From the tectonic setting point of view, the granitoid bodies are of the collisional type and they formed as syn-tectonic to post-tectonic intrusions.
Keywords
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