Volcanological and geochemical features of the products of Sabalan’ s Last Eruption (NW Iran)

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Fahim Guilany Reza; Sheikhzakariaee Seyed Jamal; DARVISHZADEH ALI; Vosoughi Abedini Mansour

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Journal: PETROLOGY Year:2019 | Volume:10 | Issue:37 Page(s): 125-146

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Information Journal Paper

Title

Volcanological and geochemical features of the products of Sabalan’ s Last Eruption (NW Iran)

Author(s)

Fahim Guilany Reza | Sheikhzakariaee Seyed Jamal | DARVISHZADEH ALI | Vosoughi Abedini Mansour | Issue Writer Certificate

Keywords

pyroclasticQ1

PlinianQ1

volcanic explosivity indexQ1

ignimbriteQ1

Sabalan volcanoQ1

west AlborzQ1

Abstract

Sabalan volcano is located in the northwest part of Iran, 25km south of Meshkinshahr in the west Alborz-Azerbaijan structural zone. The eastern and the northern slopes of Sabalan are predominantly covered with significant amounts of white-gray pyroclastic deposits indicating a very intense explosive activity at the last stage of this huge volcano activity. After conducting field studies and analyzing the results obtained using the mathematical calculations, a Plinian eruption was detected, and the extrapolated volume of the latest pyroclastic fall eruption was estimated 3. 24 km3, and the eruption of Sabalan rated a VEI of 5. Also, due to the shape of the isopach curve, the role of wind is significant in dispersing these deposits from the west to the east. The overall geochemical features of the Sabalan’ s ignimbrite including the rhyodacitic nature with calc-alkaline signatures as well as the high ratios of Ba/Nb>28 and Ba/Ta>450 are consistent with subduction related zone.

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APA: Copy

Fahim Guilany, Reza, Sheikhzakariaee, Seyed Jamal, DARVISHZADEH, ALI, & Vosoughi Abedini, Mansour. (2019). Volcanological and geochemical features of the products of Sabalan’ s Last Eruption (NW Iran). PETROLOGY, 10(37 ), 125-146. SID. https://sid.ir/paper/383628/en

Vancouver: Copy

Fahim Guilany Reza, Sheikhzakariaee Seyed Jamal, DARVISHZADEH ALI, Vosoughi Abedini Mansour. Volcanological and geochemical features of the products of Sabalan’ s Last Eruption (NW Iran). PETROLOGY[Internet]. 2019;10(37 ):125-146. Available from: https://sid.ir/paper/383628/en

IEEE: Copy

Reza Fahim Guilany, Seyed Jamal Sheikhzakariaee, ALI DARVISHZADEH, and Mansour Vosoughi Abedini, “Volcanological and geochemical features of the products of Sabalan’ s Last Eruption (NW Iran),” PETROLOGY, vol. 10, no. 37 , pp. 125–146, 2019, [Online]. Available: https://sid.ir/paper/383628/en

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