GEOCHEMICAL STUDY OF “ARASH SYENITE” (CENTRAL IRAN) WITH SPECIAL EMPHASIS ON ALKALI METASOMATISM

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VALIZADEH M.V.; SHARIFI A.

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Journal: GEOSCIENCES Year:2004 | Volume:12 | Issue:53 Page(s): 2-15

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Information Journal Paper

Title

GEOCHEMICAL STUDY OF “ARASH SYENITE” (CENTRAL IRAN) WITH SPECIAL EMPHASIS ON ALKALI METASOMATISM

Author(s)

VALIZADEH M.V. | SHARIFI A. | Issue Writer Certificate

Keywords

ALKALI METASOMATISMQ4

CENTRAL IRANQ2

SYENITEQ3

ESFORDIQ2

Abstract

Arash SYENITE is located in CENTRAL IRAN and in Bafq metalogenic province, and has intruded into the Precambrian-Cambrian volcanic-sedimentary sequences. Size and distribution of minerals are not uniform in all parts of the body and vary from chilled margins to the central part of the pluton. Effects of tectonic movements, existence of uncommon textures in plagioclase crystals and the appearance of metasomatic textures are the main evidence for metasomatism. Study of elemental concentration deduced from mass balance calculation reveals the effects of alkaline metasomatism in Arash SYENITE. Gain in K2O (and Rb) and Al2O3 with parallel losses in Fe2O3, CaO, Na2O, Ba and Sr are shown. Relative increase in Nb and Zr are due to leaching of mobile cations in this pluton.Decrease in Zr and Nb with parallel increase in SiO2, which is one of the most identical factors for the calc-alkaline differentiation, is remarkable in Arash SYENITE. There is a clear change in Y, Th and Nb relative to Zr in this pluton and based on the constant ratio of Zr/Nb, the role of contamination and assimilation of country rock is insignificant in the pertrogenesis of this pluton. Negative anomaly for Nb and TiO2 suggest a subduction-related origin for the Arash SYENITE.

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APA: Copy

VALIZADEH, M.V., & SHARIFI, A.. (2004). GEOCHEMICAL STUDY OF “ARASH SYENITE” (CENTRAL IRAN) WITH SPECIAL EMPHASIS ON ALKALI METASOMATISM. GEOSCIENCES, 12(53), 2-15. SID. https://sid.ir/paper/32533/en

Vancouver: Copy

VALIZADEH M.V., SHARIFI A.. GEOCHEMICAL STUDY OF “ARASH SYENITE” (CENTRAL IRAN) WITH SPECIAL EMPHASIS ON ALKALI METASOMATISM. GEOSCIENCES[Internet]. 2004;12(53):2-15. Available from: https://sid.ir/paper/32533/en

IEEE: Copy

M.V. VALIZADEH, and A. SHARIFI, “GEOCHEMICAL STUDY OF “ARASH SYENITE” (CENTRAL IRAN) WITH SPECIAL EMPHASIS ON ALKALI METASOMATISM,” GEOSCIENCES, vol. 12, no. 53, pp. 2–15, 2004, [Online]. Available: https://sid.ir/paper/32533/en

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