Petrology, geochemistry and mineral chemistry of Shahrak intrusive body (East of Takab, Northwest of Iran)

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Ghoreishvandi Hamid; sepahi aliasghar; maani joo Mohammad

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Journal: Iranian Journal of Crystallography and Mineralogy Year:2020 | Volume:28 | Issue:1 Page(s): 17-36

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Information Journal Paper

Title

Petrology, geochemistry and mineral chemistry of Shahrak intrusive body (East of Takab, Northwest of Iran)

Author(s)

Ghoreishvandi Hamid | sepahi aliasghar | maani joo Mohammad | Issue Writer Certificate

Keywords

Intrusive mass of the ShahrakQ1

East of TakabQ1

Mineral chemistryQ1

active continental marginQ1

Abstract

The intrusive body of the Shahrak is located between the West Azarbaijan and Kurdistan provinces. Lithologically, this intrusive body consists of granodiorite, monzonite, monzodoirite and monzogobbro, which intruded into Oligo-Miocene sedimentary units and Cretaceous and Precambrian metamorphic rocks. Mineral chemistry studies of granodiorite and monzogabbro rocks show that plagioclases have labradorite to bytownite composition, and clinopyroxenes are augite. Thermobarometry calculations of pyroxene minerals indicate that the formation temperature of these minerals ranges between 900 to 1250 oC and the crystallization pressure of clinopyroxenes is estimated to be about 6 to 10 kbar. The geochemical investigations of the whole rock indicate that the magma has metaluminous and calc-alkaline affinity. In the multi-element spider diagram normalized to condrite and primitive mantle, there is a significant enrichment of LREE than HREE and depletion of Ti, P, Ta and Nb, which is a characteristic feature of the volcanic arc rocks of the subduction zones. Also, based on different tectonomagmatic diagrams, these rocks are located in the active continental margin environment. Based on REE elements, the parental magma of the studied rocks is probably originated from an enriched mantle.

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APA: Copy

Ghoreishvandi, Hamid, sepahi, aliasghar, & maani joo, Mohammad. (2020). Petrology, geochemistry and mineral chemistry of Shahrak intrusive body (East of Takab, Northwest of Iran). IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, 28(1 ), 17-36. SID. https://sid.ir/paper/359342/en

Vancouver: Copy

Ghoreishvandi Hamid, sepahi aliasghar, maani joo Mohammad. Petrology, geochemistry and mineral chemistry of Shahrak intrusive body (East of Takab, Northwest of Iran). IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY[Internet]. 2020;28(1 ):17-36. Available from: https://sid.ir/paper/359342/en

IEEE: Copy

Hamid Ghoreishvandi, aliasghar sepahi, and Mohammad maani joo, “Petrology, geochemistry and mineral chemistry of Shahrak intrusive body (East of Takab, Northwest of Iran),” IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, vol. 28, no. 1 , pp. 17–36, 2020, [Online]. Available: https://sid.ir/paper/359342/en

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