Fractal analysis of quartz grain boundary in the gneissic granite of Abadchi, North of Shahrekord

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Riyahi Samani Fariba; SHABANIAN BOROUJENI NAHID; DAVOUDIAN DEHKORDI ALIREZA; BAKHTIYARI BEHNAZ

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Journal: Iranian Journal of Crystallography and Mineralogy Year:2019 | Volume:27 | Issue:2 Page(s): 401-410

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Title

Fractal analysis of quartz grain boundary in the gneissic granite of Abadchi, North of Shahrekord

Author(s)

Riyahi Samani Fariba | SHABANIAN BOROUJENI NAHID | DAVOUDIAN DEHKORDI ALIREZA | BAKHTIYARI BEHNAZ | Issue Writer Certificate

Keywords

Quartz grain suturesQ1

fractalQ1

strain-rateQ2

deformationQ2

AbadchiQ2

Sanandaj-Sirjan ZoneQ1

Abstract

The granitic gneisses of Abadchi village is located in the North of Zayandeh-Rud dam, where the area is a part of Sanandaj-Sirjan Zone. The mineralogical composition of the rocks is composed of quartz, plagioclase, K-feldspar, biotite, amphibole, muscovite, zircon, titanite and allanite. Quartz crystals, as the most abundant mineral constituents of these rocks, display the different conditions of deformation dynamic on the studied rocks according to their texture. Moreover, quartz crystals show evidence of bulging recrystallization (BLG), sub grain rotation (SGR) and grain boundary migration (GBM). The deformation of quartz crystals depends on the temperature and strain-rate that by using T/strain-rate diagram can determine the deformation conditions. Therefore, the fractal dimension at quartz grain boundary is between 1. 23 and 1. 11 and temperatures between 250-400 ° C and 500-750 ° C in the granitic gneisses. Using fractal dimension and calculation of temperature, the strain rates are measured 10-11. 6 to 10-6. 6for the four domain of granitic gneiss sample. The results obtained from the diagram are consistent with the deformation evidence of quartz crystals (GBM, SGR, BLG).

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APA: Copy

Riyahi Samani, Fariba, SHABANIAN BOROUJENI, NAHID, DAVOUDIAN DEHKORDI, ALIREZA, & BAKHTIYARI, BEHNAZ. (2019). Fractal analysis of quartz grain boundary in the gneissic granite of Abadchi, North of Shahrekord. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, 27(2 ), 401-410. SID. https://sid.ir/paper/3828/en

Vancouver: Copy

Riyahi Samani Fariba, SHABANIAN BOROUJENI NAHID, DAVOUDIAN DEHKORDI ALIREZA, BAKHTIYARI BEHNAZ. Fractal analysis of quartz grain boundary in the gneissic granite of Abadchi, North of Shahrekord. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY[Internet]. 2019;27(2 ):401-410. Available from: https://sid.ir/paper/3828/en

IEEE: Copy

Fariba Riyahi Samani, NAHID SHABANIAN BOROUJENI, ALIREZA DAVOUDIAN DEHKORDI, and BEHNAZ BAKHTIYARI, “Fractal analysis of quartz grain boundary in the gneissic granite of Abadchi, North of Shahrekord,” IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, vol. 27, no. 2 , pp. 401–410, 2019, [Online]. Available: https://sid.ir/paper/3828/en

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