MAGMATIC ORIGIN AND TECTONIC SETTING OF THE EOCENE-OLIGOCENE VOLCANIC AND PLUTONIC ROCKS FROM THE ZAND-ABAD AREA, NW AHAR (TAROM-QAREDAGH ZONE)

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AZIMZADEH Z.; EMAMI M.H.; HAJIALIOGHLI R.

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Journal: GEOSCIENCES Year:2011 | Volume:20 | Issue:79 Page(s): 113-120

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Title

MAGMATIC ORIGIN AND TECTONIC SETTING OF THE EOCENE-OLIGOCENE VOLCANIC AND PLUTONIC ROCKS FROM THE ZAND-ABAD AREA, NW AHAR (TAROM-QAREDAGH ZONE)

Author(s)

AZIMZADEH Z. | EMAMI M.H. | HAJIALIOGHLI R. | Issue Writer Certificate

Keywords

DILATORY CREEP DOWNQ2

POST-COLLISION ACTIVITYQ2

PARTIAL MELTINGQ2

FRACTIONAL CRYSTALLIZATIONQ2

MAGMA MIXINGQ2

CRUSTAL CONTAMINATIONQ2

HYBRID MAGMAQ2

ZAND-ABADQ2

TAROM-QAREDAGH ZONEQ2

Abstract

The ZAND-ABAD area is located in NW Ahar of north Azerbaijan. Magmatic rocks in this area consists of granitoids including monzogranite, granodiorite, monzonite and syenogranite as well as mafic rocks mainly diorite and associated extrusive rocks as andesite, trachyandesite, dacite, trachydacite, rhyolite. Subvolcanic rocks are porphyritic diorite and porphyritic monzodiorite. According to the different geochemical studies, the tectonic environment of ZAND-ABAD volcanic and plutonic rocks is determined as continental arc setting related to DILATORY CREEP DOWN subduction. This will be interpreted in relation with the Neotethyse post-collision activities. Considering the mineralogy and chemical evidence, we suggest that the ZAND-ABAD magmatic rock types (i.e. volcanic, sub-volcanic and plutonic rocks) have been derived from single magmatic source and undergone FRACTIONAL CRYSTALLIZATION, MAGMA MIXING and CRUSTAL CONTAMINATION, resulting from hybrid granitoids. Magmatic series of the different types of magmatic rocks is alkaline. Calc-alkaline and shoshonite property of some samples is interpreted related to MAGMA MIXING and CRUSTAL CONTAMINATION processes.

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APA: Copy

AZIMZADEH, Z., EMAMI, M.H., & HAJIALIOGHLI, R.. (2011). MAGMATIC ORIGIN AND TECTONIC SETTING OF THE EOCENE-OLIGOCENE VOLCANIC AND PLUTONIC ROCKS FROM THE ZAND-ABAD AREA, NW AHAR (TAROM-QAREDAGH ZONE). GEOSCIENCES, 20(79), 113-120. SID. https://sid.ir/paper/31559/en

Vancouver: Copy

AZIMZADEH Z., EMAMI M.H., HAJIALIOGHLI R.. MAGMATIC ORIGIN AND TECTONIC SETTING OF THE EOCENE-OLIGOCENE VOLCANIC AND PLUTONIC ROCKS FROM THE ZAND-ABAD AREA, NW AHAR (TAROM-QAREDAGH ZONE). GEOSCIENCES[Internet]. 2011;20(79):113-120. Available from: https://sid.ir/paper/31559/en

IEEE: Copy

Z. AZIMZADEH, M.H. EMAMI, and R. HAJIALIOGHLI, “MAGMATIC ORIGIN AND TECTONIC SETTING OF THE EOCENE-OLIGOCENE VOLCANIC AND PLUTONIC ROCKS FROM THE ZAND-ABAD AREA, NW AHAR (TAROM-QAREDAGH ZONE),” GEOSCIENCES, vol. 20, no. 79, pp. 113–120, 2011, [Online]. Available: https://sid.ir/paper/31559/en

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