Document Type : Original Research Paper

Authors

1 Head of Communication and Information of Geologycal survey of Iran (Kerman)

2 Assistant professor, department of geology, north Tehran branch, Islamic Azad University,Tehran,Iran

3 Associate professor, department of geology, Islamshahr branch, Islamic Azad University,Tehran,Iran

4 Assistant professor, department of geology,science and research branch, Islamic Azad University,Tehran,Iran

Abstract

Abstract
In the west and south-west part of Salafchegan near Zavarian village in Iran (In central Iranian volcano plotonic belt) there are some Plutonic rocks. Based on petrography and geochemistry findings these Plutonic rocks are Diorite, Monzonite and less Quartz monzonite. The main texture in Dioritic rocks is intergranular and in Monzonite is Porphyritic. Based on TAS diagram Samples located in Diorite, granodiorite and gabbrodiorite. Tectono-magmatic diagram Y Versus Zr shows the magmatic arc setting and Zr/TiO2 Versus Ce/P2O5 diagram contrasts postcolligenal magmatic arcs. Based on Chondrite and primitive mantle Spider diagrams, LREE have enriched to HREE in this area that makes the overal slope of these diagrams declined from left to right and this consident with the overal pattern of subduction zone. The results of petrography, geochemistry and tectonic setting studies in this area, indicate that neogene magmatism occurred in post colligenal tectonic setting - subduction of Neo-thetise ocean under central Iranian plate in neogen era.

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