The origin, magma evolution and tectonic setting of southeast of Jebal-E-Barez granitoid, Bam, Kerman province

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Behpour Shirin; MORADIAN ABBAS; AHMADIPOUR HAMID

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Journal: GEOSCIENCES Year:2020 | Volume:29 | Issue:116 Page(s): 203-212

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Information Journal Paper

Title

The origin, magma evolution and tectonic setting of southeast of Jebal-E-Barez granitoid, Bam, Kerman province

Author(s)

Behpour Shirin | MORADIAN ABBAS | AHMADIPOUR HAMID | Issue Writer Certificate

Keywords

JebalQ1

EQ2

Barez granitoidQ2

CalcQ1

alkalineQ1

IQ1

type graniteQ1

magma evolutionQ1

garnetQ1

freeQ1

Abstract

The studied area is located in the SE of Bam and Urumieh-Dokhtar Magmatic Arc. Based on petrographical and geochemical characteristics, studied rocks contain tonalite, granodiorite, granite and alkali granite. These rocks are metaluminous, weakly peraluminous, high-K, and Calc-alkaline. The behavior of Y, Ba, Ce and Zr vs. SiO2 display the properties of the high temperature I-type granites. These granitoids plot in the field of VOG. Enriched LREE and LILE with depleted HFSE show characteristics of subduction related active continental margins. The ratios of Nb/U and Nb/La and Sm/Yb indicate the crustal contamination. Isotopic data and La vs. La/Sm diagram show the role of the lower crust and the old continental crust in magma evolution. According to the phenocrysts assemblage, REE pattern with negative Eu anomaly and La/Yb ratio to crustal thickness, studied rocks are fractionated from relatively dry magma which has undergone from shallow depths. Sm/Yb and La/Yb ratio display the mantle source is garnet-free source. The low to moderate degree of partial melting of garnet-free amphibolite is the source of the studied granitoids. Volatiles that is driven from subduction slab and melt of the subducted sediments play a significant role in the generation and evolution of their magma source.

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APA: Copy

Behpour, Shirin, MORADIAN, ABBAS, & AHMADIPOUR, HAMID. (2020). The origin, magma evolution and tectonic setting of southeast of Jebal-E-Barez granitoid, Bam, Kerman province. GEOSCIENCES, 29(116 ), 203-212. SID. https://sid.ir/paper/399789/en

Vancouver: Copy

Behpour Shirin, MORADIAN ABBAS, AHMADIPOUR HAMID. The origin, magma evolution and tectonic setting of southeast of Jebal-E-Barez granitoid, Bam, Kerman province. GEOSCIENCES[Internet]. 2020;29(116 ):203-212. Available from: https://sid.ir/paper/399789/en

IEEE: Copy

Shirin Behpour, ABBAS MORADIAN, and HAMID AHMADIPOUR, “The origin, magma evolution and tectonic setting of southeast of Jebal-E-Barez granitoid, Bam, Kerman province,” GEOSCIENCES, vol. 29, no. 116 , pp. 203–212, 2020, [Online]. Available: https://sid.ir/paper/399789/en

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