CHEMICAL VARIATIONS OF METAMORPHIC MINERALS IN BASIC MYLONITIC AND METASOMATIZED ROCKS, NW URUMIEH

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MOHAMMADIHA K.; SABZEHIE M.; GHAHRAIE POUR M.; KOSARI TORBEHBAR A.

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Journal: GEOSCIENCES Year:2013 | Volume:22 | Issue:86 Page(s): 119-130

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Information Journal Paper

Title

CHEMICAL VARIATIONS OF METAMORPHIC MINERALS IN BASIC MYLONITIC AND METASOMATIZED ROCKS, NW URUMIEH

Author(s)

MOHAMMADIHA K. | SABZEHIE M. | GHAHRAIE POUR M. | KOSARI TORBEHBAR A. | Issue Writer Certificate

Keywords

CHEMICAL VARIATIONSQ2

BASIC METAMORPHIC ROCKSQ2

MYLONITEQ3

METASOMATISMQ2

AMPHIBOLEQ2

PLAGIOCLASEQ1

URUMIEHQ2

Abstract

Located in the NW Iran, in Sanadaj-Sirjan metamorphic belt, the studied area mainly comprises of metamorphic and varied acidic-basic igneous originated rocks. BASIC METAMORPHIC ROCKS have been chemically controlled by two main metamorphic processes including METASOMATISM and dynamic deformation. AMPHIBOLE and PLAGIOCLASE are of the most significant minerals occurring in the rocks. Here we represent the CHEMICAL VARIATIONS of those metamorphic minerals in relation to their host rocks and prograde metamorphism. Mineral chemistry analyses of AMPHIBOLE minerals reveal an increase in Al2O3, TiO2 and a decrease in MgO, MnO during mylonitization of gabbroic rocks. Affected by METASOMATISM, the Al2O3 and Na2O contents of AMPHIBOLEs have been also increased. CaO content of PLAGIOCLASE has declined; in contrast, Al2O3 and Na2O have raised during mylonitization and METASOMATISM processes. These variations are overally ruled by chemical composition of the intruded pluton, pressure-temperature condition, oxygen fugacity and occurrence of equilibrant phases. Increasing Al and Na brings about tschermakite substitution in the deformed AMPHIBOLEs and edinite substitution in the metasomatized rocks respectively.

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APA: Copy

MOHAMMADIHA, K., SABZEHIE, M., GHAHRAIE POUR, M., & KOSARI TORBEHBAR, A.. (2013). CHEMICAL VARIATIONS OF METAMORPHIC MINERALS IN BASIC MYLONITIC AND METASOMATIZED ROCKS, NW URUMIEH. GEOSCIENCES, 22(86), 119-130. SID. https://sid.ir/paper/32042/en

Vancouver: Copy

MOHAMMADIHA K., SABZEHIE M., GHAHRAIE POUR M., KOSARI TORBEHBAR A.. CHEMICAL VARIATIONS OF METAMORPHIC MINERALS IN BASIC MYLONITIC AND METASOMATIZED ROCKS, NW URUMIEH. GEOSCIENCES[Internet]. 2013;22(86):119-130. Available from: https://sid.ir/paper/32042/en

IEEE: Copy

K. MOHAMMADIHA, M. SABZEHIE, M. GHAHRAIE POUR, and A. KOSARI TORBEHBAR, “CHEMICAL VARIATIONS OF METAMORPHIC MINERALS IN BASIC MYLONITIC AND METASOMATIZED ROCKS, NW URUMIEH,” GEOSCIENCES, vol. 22, no. 86, pp. 119–130, 2013, [Online]. Available: https://sid.ir/paper/32042/en

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