Petrology and Origin of Intrusive Masses of Zaker Located in NE of Zanjan  

作　　者：Mahboubeh Mansouri Afshin Ashjae-Ardalan Mohammad Lotfi Jamal Sheikh-Zakariai 

机构地区：[1]Department of Geology, Faculty of Sciences, North Tehran Branch, Islamic Azad University, Tehran, Iran [2]Department of Geology, Faculty of Sciences, Science and Research Branch, Islamic Azad University, Tehran, Iran

出　　处：《Open Journal of Geology》2017年第7期1000-1011,共12页地质学期刊（英文）

摘　　要：The study area, in east of Zanjan, with NW-SE trend exposed and structurally is located in Alborz-Azarbaijan zone and Tarom subzone. The mass composition is in monzogranite, quartz-monzonite, monzonite, quartz-monzodiorite and monzodiorite range. It belongs to high K calc-alkaline to Shoshsonitic magmatic series. According to the geochemistry and petrogenesis results, partial melting of magma has been the important controlling process of rock variety in the study area. All samples have negative anomalies of Nb that is related to subduction and active continental coastline zones as well as high anomalies of K, Rb and Ba explaining the role of continental crust or contamination with the continental crust. Granitic volcanic arc related environments and syenite alkali feldspar masses reflect the granite mass within the plate. Monzonites and diorites point to the volcanic arc and syenite and granite masses show within the plate environments.The study area, in east of Zanjan, with NW-SE trend exposed and structurally is located in Alborz-Azarbaijan zone and Tarom subzone. The mass composition is in monzogranite, quartz-monzonite, monzonite, quartz-monzodiorite and monzodiorite range. It belongs to high K calc-alkaline to Shoshsonitic magmatic series. According to the geochemistry and petrogenesis results, partial melting of magma has been the important controlling process of rock variety in the study area. All samples have negative anomalies of Nb that is related to subduction and active continental coastline zones as well as high anomalies of K, Rb and Ba explaining the role of continental crust or contamination with the continental crust. Granitic volcanic arc related environments and syenite alkali feldspar masses reflect the granite mass within the plate. Monzonites and diorites point to the volcanic arc and syenite and granite masses show within the plate environments.

关 键 词：PETROLOGY GRANITE ALBORZ Partial MELTING Iran 

分 类 号：P5[天文地球—地质学]