GEOCHEMICAL STUDY OF YOUNG BASALTS IN EAST AZERBAIJAN (NORTHWEST OF IRAN)

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AMEL NASIR; AKBARZADEH LALEH MOUSA

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Journal: PETROLOGY Year:2017 | Volume:7 | Issue:28 Page(s): 109-126

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Information Journal Paper

Title

GEOCHEMICAL STUDY OF YOUNG BASALTS IN EAST AZERBAIJAN (NORTHWEST OF IRAN)

Author(s)

AMEL NASIR | AKBARZADEH LALEH MOUSA | Issue Writer Certificate

Keywords

OLIVINE BASALTQ2

POST COLLISION ARCSQ1

EAST AZERBAIJANQ2

NORTHWEST OF IRANQ2

Abstract

The young basalts in EAST AZERBAIJAN are placed in West Alborz – Azerbaijan zone. Volcanic activities have extended from the Pliocene to the Quaternary by eruption from fracture systems and faults. Rocks under study are olivine-basalt and trachybasalts. The main minerals are olivine, pyroxene, plagioclase set in glassy or microcrystalline matrix and olivine are present as phenocryst. The textures in the studied rocks are mainly hyaloporphyric, hyalomicrolitic and porphyritic. Trace elements and rare earth elements on spider diagrams have high LREE/HREE ratio. Rare earth elements on diagram display negative slope indicating alkaline nature for the basalts under study. As it may be observed, on tectonic diagrams, the Marand basalts are placed on Island Arc basalt (IAB) field, whereas the Ahar, Heris, Kalaibar and Miyaneh basalts are classified as Ocean Island Basalts (OIB) and finally the basalts of Sohrol area are plotted on continental rift Basalt (CRB) field. The Marand and Sohrol basalts were likely originated from lithospheric - astenospheric mantle with 2 to 5 % partial melting whereas, the Ahar, Heris and Kalaibar basalts having same source experienced 1-2% partial melting rate and the Miyaneh basalts possibly produced from lithospheric mantle with 10-20% partial melting rate pointing to shallow depth of mantle and the higher rate of melting. Based on tectonic setting diagrams, all the rocks studied are plotted in post collisional environments.

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APA: Copy

AMEL, NASIR, & AKBARZADEH LALEH, MOUSA. (2017). GEOCHEMICAL STUDY OF YOUNG BASALTS IN EAST AZERBAIJAN (NORTHWEST OF IRAN). PETROLOGY, 7(28 ), 109-126. SID. https://sid.ir/paper/197063/en

Vancouver: Copy

AMEL NASIR, AKBARZADEH LALEH MOUSA. GEOCHEMICAL STUDY OF YOUNG BASALTS IN EAST AZERBAIJAN (NORTHWEST OF IRAN). PETROLOGY[Internet]. 2017;7(28 ):109-126. Available from: https://sid.ir/paper/197063/en

IEEE: Copy

NASIR AMEL, and MOUSA AKBARZADEH LALEH, “GEOCHEMICAL STUDY OF YOUNG BASALTS IN EAST AZERBAIJAN (NORTHWEST OF IRAN),” PETROLOGY, vol. 7, no. 28 , pp. 109–126, 2017, [Online]. Available: https://sid.ir/paper/197063/en

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