THE AGE AND THE ORIGIN OF KASHMAR GRANITOID, NE CENTRAL IRAN

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SOLTANI A.A.F.; CARR P.F.

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Journal: JOURNAL OF SCIENCE (KHARAZMI UNIVERSITY) Year:2007 | Volume:7 | Issue:3-4 Page(s): 241-249

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Title

THE AGE AND THE ORIGIN OF KASHMAR GRANITOID, NE CENTRAL IRAN

Author(s)

SOLTANI A.A.F. | CARR P.F. | Issue Writer Certificate

Keywords

IRANQ3

KASHMARQ3

EOCENEQ3

ISOTOPEQ3

I-TYPE GRANITOIDQ3

METALUMINOUSQ3

Abstract

The KASHMAR granitoid is a major plutonic suite occurring in north-Doruneh-Fault magmatic belt of IRAN. It intrudes into the Early-Eocene volcanic rocks and crops out as extensive I-type plutons of mainly granitic and granodioritic composition. The plutons show characteristics of low-temperature and low-pressure granites, emplaced in a sub– volcanic environment. Rb/Sr dating on biotite–whole rock pairs from granite, granodiorite and alkali feldspar granite yield ages ranging from 43.5 to 42.4±0.4 Ma which indicate Middle EOCENE (Lutetian) times and a short time interval for emplacement of different plutons of the KASHMAR granitoid. The Sr and Nd ISOTOPEs represent low initial 87Sr/86Sr, intermediate initial 143Nd/144Nd and low, negative eNd values for KASHMAR granitoid. Field, geochemistry and isotopic data indicate that magmas of the KASHMAR granitoid are relatively similar in source composition and originated from partial melting of quartzofeldspathic rocks of the lower crust (infra-crustal). Also, these magmas have been dominantly evolved through the mechanism of fractional crystallization.

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APA: Copy

SOLTANI, A.A.F., & CARR, P.F.. (2007). THE AGE AND THE ORIGIN OF KASHMAR GRANITOID, NE CENTRAL IRAN. JOURNAL OF SCIENCE (KHARAZMI UNIVERSITY), 7(3-4), 241-249. SID. https://sid.ir/paper/44140/en

Vancouver: Copy

SOLTANI A.A.F., CARR P.F.. THE AGE AND THE ORIGIN OF KASHMAR GRANITOID, NE CENTRAL IRAN. JOURNAL OF SCIENCE (KHARAZMI UNIVERSITY)[Internet]. 2007;7(3-4):241-249. Available from: https://sid.ir/paper/44140/en

IEEE: Copy

A.A.F. SOLTANI, and P.F. CARR, “THE AGE AND THE ORIGIN OF KASHMAR GRANITOID, NE CENTRAL IRAN,” JOURNAL OF SCIENCE (KHARAZMI UNIVERSITY), vol. 7, no. 3-4, pp. 241–249, 2007, [Online]. Available: https://sid.ir/paper/44140/en

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