GEOCHEMISTRY, PETROGENESIS AND TECTONIC SETTING OF SAHAND SUBVOLCANIC AND VOLCANIC DOMES

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PIRMOHAMMADI ALISHAH FARHAD

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: GEOCHEMISTRY Year:2015 | Volume:4 | Issue:3 Page(s): 209-218

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Information Journal Paper

Title

GEOCHEMISTRY, PETROGENESIS AND TECTONIC SETTING OF SAHAND SUBVOLCANIC AND VOLCANIC DOMES

Author(s)

PIRMOHAMMADI ALISHAH FARHAD | Issue Writer Certificate

Keywords

HIGH SIO2 ADAKITEQ2

DACITEQ2

YOUNG SAHANDQ2

TABRIZQ2

CENTRAL IRANQ2

Abstract

The Sahand volcano is located in the NW of Iran. Shand is a stratovolcano and is dominated by pyroclastic materials and lava flows of the Miocene-Quaternary. The last eruptions include subvolcanic and volcanic domes with dacitic to rhyolitic composition, which are studied in this paper as the YOUNG SAHAND. These rocks indicate petrological features including sieve texture and zoning in plagioclases. Common features in the young subvolcanic and volcanic rocks of the Sahand are abundance of plagioclase and amphibole, enrichment of Ba, Rb and Sr and negative Nb and Y anomalies in primitive mantle normalized multi-element diagrams and enrichment of LREE compared to HREE in chondrite-normalized REE patterns. These characteristics and the location of the rocks studied in the Y-Sr/Y diagram implying an adakitic composition for these rocks. The YOUNG SAHAND rocks are high SiO2 adakitic rocks. These rocks have been derived from partial melting of garnet-bearing crustal sources (thickened lower continental crust or oceanic crust) and underwent magmatic evolution during their ascent. The formation of studied rocks is related to the Arabian-Eurasia collision zone.

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APA: Copy

PIRMOHAMMADI ALISHAH, FARHAD. (2015). GEOCHEMISTRY, PETROGENESIS AND TECTONIC SETTING OF SAHAND SUBVOLCANIC AND VOLCANIC DOMES. GEOCHEMISTRY, 4(3), 209-218. SID. https://sid.ir/paper/230882/en

Vancouver: Copy

PIRMOHAMMADI ALISHAH FARHAD. GEOCHEMISTRY, PETROGENESIS AND TECTONIC SETTING OF SAHAND SUBVOLCANIC AND VOLCANIC DOMES. GEOCHEMISTRY[Internet]. 2015;4(3):209-218. Available from: https://sid.ir/paper/230882/en

IEEE: Copy

FARHAD PIRMOHAMMADI ALISHAH, “GEOCHEMISTRY, PETROGENESIS AND TECTONIC SETTING OF SAHAND SUBVOLCANIC AND VOLCANIC DOMES,” GEOCHEMISTRY, vol. 4, no. 3, pp. 209–218, 2015, [Online]. Available: https://sid.ir/paper/230882/en

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