Geochemistry of mid- upper eocene intra-continental alkaline volcanic range, south part of central alborz mountains, north of Iran.

Authors

  • Leila Abbaspour Shirjoposht Department of Geoscience, Science and Research Branch, Islamic Azad University (IAU), Tehran, Iran
  • Sayed Jamal al-Din Sheikh Zakariaee Department of Geoscience, Science and Research Branch, Islamic Azad University (IAU), Tehran, Iran
  • Mohammad Reza Ansari Department of Geoscience, Science and Research Branch, Islamic Azad University (IAU), Tehran, Iran
  • Mohammad Hashem Emami Department of Geoscience, Science and Research Branch, Islamic Azad University (IAU), Tehran, Iran

DOI:

https://doi.org/10.5377/nexo.v33i02.10788

Keywords:

Ziaran area, Iran, garnet lherzolite, partial melting

Abstract

The Ziaran volcanic Belt (ZVB), North of Iran contains a number of intra-continental alkaline volcanic range situated on South part of central Alborz Mountains, formed along the localized extensional basins developed in relation with the compressional regime of Eocene. The mid-upper Eocene volcanic suite comprises the extracted melt products of adiabatic decompression melting of the mantle that are represented by small volume intra-continental plate volcanic rocks of alkaline volcanism and their evaluated Rocks with compositions representative of mantle-derived, primary (or near-primary) melts. Trace element patterns with significant enrichment in LILE, HFSE and REEs, relative to Primitive Mantle. Chondrite-normalized of rare earth elements and enrichment in incompatible elements and their element ratios (e. g. LREE/HREE, MREE/HREE, LREE/MREE) shown these element modelling indicates that the magmas were generated by comparably variable degrees of partial melting of garnet lherzolite and a heterogeneous asthenospheric, OIB mantle sources.

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Published

2020-12-31

How to Cite

Abbaspour Shirjoposht, L., Sheikh Zakariaee, S. J. al-D., Reza Ansari, M., & Hashem Emami, M. (2020). Geochemistry of mid- upper eocene intra-continental alkaline volcanic range, south part of central alborz mountains, north of Iran. Nexo Scientific Journal, 33(02), 511–524. https://doi.org/10.5377/nexo.v33i02.10788

Issue

Vol. 33 No. 02 (2020)

Section

Articles

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