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Geochemistry and petrogenesis of volcanic associations in Zouzan area, East of Iran

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Abstract

Eocene volcanism in the Zouzan area, NE of Lut block, Eastern Iran, is presented by compositional range of different volcanic rocks include basalts, basaltic andesites, andesites, and dacites. This magmatic assemblage exhibits high-K calc-alkaline affinities. The chemical variations of major and trace elements suggest key role for fractional crystallization of amphibole + clinopyroxene ± magnetite in the magmatic evolution of Zouzan volcanic rocks. All volcanic rocks display large-ion lithophile element (LILE) and light rare earth element (LREE) enrichment and negative high field strength element (HFSE) anomalies with high Ba/Nb, low Nb/Y, and high Zr/Nb ratios indicative of arc and subduction-related nature of their magmas. Geochemical data show that volcanic rocks have been formed from shallow level fractionation of an enriched mantle (most likely mixing of slab and OIB-like melts) during subduction of oceanic crust between Lut and Afghan blocks in Tertiary.

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Acknowledgments

I am grateful to Geological Survey of Iran, North-East Territory for financial support of field sampling. Some parts of analytical costs were funded by a grant from Payame Noor University. I thank anonymous referees for their constructive reviews of the manuscript. I would also like to thank Domenico Doronzo for advantageous editorial suggestions.

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  1. Department of Geology, Payame Noor University, 19395-4697, Tehran, Iran

    Seyed Ali Mazhari

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Mazhari, S.A. Geochemistry and petrogenesis of volcanic associations in Zouzan area, East of Iran. Arab J Geosci 9, 37 (2016). https://doi.org/10.1007/s12517-015-2125-8

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