PETROGRAPHY, GEOCHEMISTRY, GENESIS AND TECTONIC SETTING OF MESGARAN AREA GRANITOIDS (SOUTH-EAST OF BIRJAND)

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MOHAMMADI S.S.; VOSOUGHI ABEDINI M.; POURMOAFI S.M.; EMAMI M.H.; KHATIB M.M.

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Journal: JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY) Year:2007 | Volume:17 | Issue:65 (GEOLOGY ISSUE) Page(s): 1-15

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Title

PETROGRAPHY, GEOCHEMISTRY, GENESIS AND TECTONIC SETTING OF MESGARAN AREA GRANITOIDS (SOUTH-EAST OF BIRJAND)

Author(s)

Keywords

GRANITOIDQ3

MESGARANQ3

EAST OF IRANQ3

CALC-ALKALINEQ3

VAGQ3

Abstract

Mesgaran area GRANITOIDic bodies has 5km2 expose, is located at West margin of EAST OF IRAN Ophiolite melange belt at Sistan suture zone. These GRANITOIDs consists of granodiorite, tonalite and aplitic granite dikes and main mafic mineral of them is biotite. Most plagioclases showing zoning textures, indicative of uncomplete chemical equilibrium between magma and these zoned crystals.Existence of studied GRANITOIDic bodies in active shear zone of Nehbandan fault system with north-south trend, caused deformation and appearance of orientation in micas of GRANITOIDic rocks. Brokenness of most quartz crystals and undulatory extinction of them, recrystallization in quartz crystals, bending and strong curvature of cleavage surface of micas, fracture in plagioclases and appearance of deformational twins, are instances of deformation in studied rocks. Existence of chlorite and epidote-zoisite group minerals is demonstrative low grade metamorphism (green schist) in studied area. Geochemical study ofthe investigated samples shows ca1c-alkalineand metaluminous to peraluminous characteristics of these rocks. It seems that contamination of original magma by crustal materials is an effective process in generation of studied rocks. Most of the characteristics of studied rocks are comparable with I-type GRANITOIDs. Due to tectonic setting these GRANITOIDs are orogenic type and VAG.

Cites

GEOCHEMISTRY, PETROLOGY AND ZIRCON U-PB DATING FOR BIBI MARYAM GRANITOID, NE OF NEHBANDAN, EAST OF IRAN

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APA: Copy

MOHAMMADI, S.S., VOSOUGHI ABEDINI, M., POURMOAFI, S.M., EMAMI, M.H., & KHATIB, M.M.. (2007). PETROGRAPHY, GEOCHEMISTRY, GENESIS AND TECTONIC SETTING OF MESGARAN AREA GRANITOIDS (SOUTH-EAST OF BIRJAND). JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY), 17(65 (GEOLOGY ISSUE)), 1-15. SID. https://sid.ir/paper/70503/en

Vancouver: Copy

MOHAMMADI S.S., VOSOUGHI ABEDINI M., POURMOAFI S.M., EMAMI M.H., KHATIB M.M.. PETROGRAPHY, GEOCHEMISTRY, GENESIS AND TECTONIC SETTING OF MESGARAN AREA GRANITOIDS (SOUTH-EAST OF BIRJAND). JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY)[Internet]. 2007;17(65 (GEOLOGY ISSUE)):1-15. Available from: https://sid.ir/paper/70503/en

IEEE: Copy

S.S. MOHAMMADI, M. VOSOUGHI ABEDINI, S.M. POURMOAFI, M.H. EMAMI, and M.M. KHATIB, “PETROGRAPHY, GEOCHEMISTRY, GENESIS AND TECTONIC SETTING OF MESGARAN AREA GRANITOIDS (SOUTH-EAST OF BIRJAND),” JOURNAL OF SCIENCES (ISLAMIC AZAD UNIVERSITY), vol. 17, no. 65 (GEOLOGY ISSUE), pp. 1–15, 2007, [Online]. Available: https://sid.ir/paper/70503/en

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