GEOCHEMISTRY AND PETROGENESIS OF AN ALKALINE-CALC ALKALINE VOLCANIC SUITE NORTH CENTRAL IRAN: THE ROLE OF CRYSTAL FRACTIONATION AND ENRICHMENT PROCESSES IN A BACK-ARC ENVIRONMENT

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TOUTI F.; YAZDANI SIMA; BAZARGANI GILANI KAMAL ALDIN

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Journal: GEOSCIENCES Year:2008 | Volume:17 | Issue:67 Page(s): 210-223

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Title

GEOCHEMISTRY AND PETROGENESIS OF AN ALKALINE-CALC ALKALINE VOLCANIC SUITE NORTH CENTRAL IRAN: THE ROLE OF CRYSTAL FRACTIONATION AND ENRICHMENT PROCESSES IN A BACK-ARC ENVIRONMENT

Author(s)

TOUTI F. | YAZDANI SIMA | BAZARGANI GILANI KAMAL ALDIN | Issue Writer Certificate

Keywords

SOUTH KAHRIZAKQ3

CENTRAL IRANQ2

SUBALKALINE- ALKALINE LAVAQ3

BACK-ARCQ2

EXTENTIONAL REGIONQ2

SUBDUCTION ZONEQ2

Abstract

SOUTH KAHRIZAK volcanic rocks with Eocene age are located in the north part of CENTRAL IRAN. These rocks are mainly composed of pyroclastics (tuff and ignimbrites) and lava flows (rhyolite, trachyandesite, basaltic trachyandesite and basalt). Petrographic evidence such as: zoning, sieve texture and rounded crystals in plagioclase and pyroxene phenocrysts show the non-equilibrium conditions between melt and crystals during magma cooling. Geochemical characteristics indicate that these rocks locate in the subalkaline to alkaline domain. The highly enrichment of LREE compared to HREE, high content of LILE relative to HFSE and significant anomalies of Nb, Ta and Ti reveal the characteristics of a subduction - related volcanism. Whereas, the alkaline affinity of rocks shows that they may have formed in an EXTENTIONAL REGION, most probably a BACK-ARC basin.

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APA: Copy

TOUTI, F., YAZDANI, SIMA, & BAZARGANI GILANI, KAMAL ALDIN. (2008). GEOCHEMISTRY AND PETROGENESIS OF AN ALKALINE-CALC ALKALINE VOLCANIC SUITE NORTH CENTRAL IRAN: THE ROLE OF CRYSTAL FRACTIONATION AND ENRICHMENT PROCESSES IN A BACK-ARC ENVIRONMENT. GEOSCIENCES, 17(67), 210-223. SID. https://sid.ir/paper/31872/en

Vancouver: Copy

TOUTI F., YAZDANI SIMA, BAZARGANI GILANI KAMAL ALDIN. GEOCHEMISTRY AND PETROGENESIS OF AN ALKALINE-CALC ALKALINE VOLCANIC SUITE NORTH CENTRAL IRAN: THE ROLE OF CRYSTAL FRACTIONATION AND ENRICHMENT PROCESSES IN A BACK-ARC ENVIRONMENT. GEOSCIENCES[Internet]. 2008;17(67):210-223. Available from: https://sid.ir/paper/31872/en

IEEE: Copy

F. TOUTI, SIMA YAZDANI, and KAMAL ALDIN BAZARGANI GILANI, “GEOCHEMISTRY AND PETROGENESIS OF AN ALKALINE-CALC ALKALINE VOLCANIC SUITE NORTH CENTRAL IRAN: THE ROLE OF CRYSTAL FRACTIONATION AND ENRICHMENT PROCESSES IN A BACK-ARC ENVIRONMENT,” GEOSCIENCES, vol. 17, no. 67, pp. 210–223, 2008, [Online]. Available: https://sid.ir/paper/31872/en

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