PETROGENESIS OF CHAH SALAR GRANITOIDIC PLUTON (SW OF NEISHABOUR)

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SADEGHIA MAHMOUD; GHASEMI HABIB ELAH; FARSI Z.

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Journal: GEOSCIENCES Year:2010 | Volume:19 | Issue:75 Page(s): 133-150

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Information Journal Paper

Title

PETROGENESIS OF CHAH SALAR GRANITOIDIC PLUTON (SW OF NEISHABOUR)

Author(s)

SADEGHIA MAHMOUD | GHASEMI HABIB ELAH | FARSI Z. | Issue Writer Certificate

Keywords

PETROGENESISQ3

GRANITOIDIC PLUTONQ3

CONTINENTAL ARC GRANITOIDSQ3

FRACTIONAL CRYSTALLIZATIONQ2

CHAH SALARQ3

NEISHABOURQ2

Abstract

Chah Salar GRANITOIDIC PLUTON is located in the N of Chah-Salar village, SW of NEISHABOUR, in the northern margin of structural Central Iran zone. This pluton intruded in Sabzevar ophiolitic Zone and based on the field observations, petrographical and geochemical classification diagrams, its lithological composition composed of diorite, quartzdiorite, granodiorite and alkali feldspar granite. Alkali feldspar granites as a much fractionated end-members of this rock association are intruded in this pluton in the form of dikes or apophyse shapes.Granitic pegmatites and their associated quartzolites are the most differentiated end-member of this rock association. Their subvolcanic equivalents such as pyroxene-bearing andesite, andesite; trachyandesite and dacite cut this pluton in the forms of dikes or domes. The studied rocks show variety of textures including granular, mynnekitic, graphic, porphyritic, microlitic porphyry and pilotaxitic. Except alka1i feldspar granites which are highly fractionated, the other lithological compositions, on the variations diagrams of major, trace and rare earth elements versus SiO2, or differentiation index show continuous compositional variations. This pluton has calc-alkaline and metaluruinous nature and belongs to I-type granitoids.Also tectonic setting discrimination diagrams indicate that the CHAH SALAR GRANITOIDIC PLUTON belongs to volcanic arc granitoids (VAG) and CONTINENTAL ARC GRANITOIDS (CAG). Detailed investigations offield geology, petrography and geochemical characteristics indicate that magma-fonning of this pluton is resulted from partial melting of subducted oceanic slab (metabasite) or metasomatized mantle wedge and then evolved by FRACTIONAL CRYSTALLIZATION, magma contamination or magma mixing.

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References

پترولوژی و ژئوشیمی توده های آذرین بعد از ائوسن نوار افیولیتی سبزوار (همایش)

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APA: Copy

SADEGHIA, MAHMOUD, GHASEMI, HABIB ELAH, & FARSI, Z.. (2010). PETROGENESIS OF CHAH SALAR GRANITOIDIC PLUTON (SW OF NEISHABOUR). GEOSCIENCES, 19(75), 133-150. SID. https://sid.ir/paper/31286/en

Vancouver: Copy

SADEGHIA MAHMOUD, GHASEMI HABIB ELAH, FARSI Z.. PETROGENESIS OF CHAH SALAR GRANITOIDIC PLUTON (SW OF NEISHABOUR). GEOSCIENCES[Internet]. 2010;19(75):133-150. Available from: https://sid.ir/paper/31286/en

IEEE: Copy

MAHMOUD SADEGHIA, HABIB ELAH GHASEMI, and Z. FARSI, “PETROGENESIS OF CHAH SALAR GRANITOIDIC PLUTON (SW OF NEISHABOUR),” GEOSCIENCES, vol. 19, no. 75, pp. 133–150, 2010, [Online]. Available: https://sid.ir/paper/31286/en

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