PETROGRAPHY AND GEOCHEMISTRY OF MIO-PLIOCENE VOLCANIC MASSES IN THE SOUTHWEST OF BOSTANABAD, AND COMPARE IT WITH THE CLASSIC ADAKITE

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PIRMOHAMMADI ALISHAH FARHAD

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Journal: GEOCHEMISTRY Year:2016 | Volume:5 | Issue:2 Page(s): 131-143

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Title

PETROGRAPHY AND GEOCHEMISTRY OF MIO-PLIOCENE VOLCANIC MASSES IN THE SOUTHWEST OF BOSTANABAD, AND COMPARE IT WITH THE CLASSIC ADAKITE

Author(s)

PIRMOHAMMADI ALISHAH FARHAD | Issue Writer Certificate

Keywords

MIO-PLIOCENEQ2

DACITE-ANDESITEQ2

CLASSIC ADAKITEQ2

BOSTANABADQ2

UROMIEH-DOKHTAR MAGMATIC BELTQ2

Abstract

The MIO-PLIOCENE volcanic rocks are exposed in the Southwest of BOSTANABAD (Arvanehkuh, Biukdagh and Ghapandagh masses) East-Azerbijan province. These rocks formed a part of UROMIEH-DOKHTAR MAGMATIC BELT and consist of andesites and dacites. The rocks studied have porphyritic texture and Phenocrysts wiht plagioclase, sanidine, amphibole, biotite and quartz. Based on geochemical data and multielements pattern, these rocks are medium to high K calc-alkaline suite and show LILE and LREE enriched normalized multi-element patterns, and Nb and Ti deplated. Chondrite normalized REE patterns of the studied volcanic rocks display a decrease from LREE to HREE without any Eu anomaly and formed in subduction zone in an active continental margin. They have higher SiO2, Sr content, Sr/Y and La/Yb ratios and lower MgO, Y and Yb contents in compare to those of normal calc-alkaline volcanic rocks and show characteristics of HSA (high SiO2 adakites). HREE and Y depleted patterns suggest the existence of garnet and amphibole as a residue in the source. The source of these rocks was probably garnet-amphibolite possibly generated during subduction of the Neo-Tethyan oceanic slab beneath the Central Iran zone and in fact are CLASSIC ADAKITE.

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APA: Copy

PIRMOHAMMADI ALISHAH, FARHAD. (2016). PETROGRAPHY AND GEOCHEMISTRY OF MIO-PLIOCENE VOLCANIC MASSES IN THE SOUTHWEST OF BOSTANABAD, AND COMPARE IT WITH THE CLASSIC ADAKITE. GEOCHEMISTRY, 5(2), 131-143. SID. https://sid.ir/paper/230907/en

Vancouver: Copy

PIRMOHAMMADI ALISHAH FARHAD. PETROGRAPHY AND GEOCHEMISTRY OF MIO-PLIOCENE VOLCANIC MASSES IN THE SOUTHWEST OF BOSTANABAD, AND COMPARE IT WITH THE CLASSIC ADAKITE. GEOCHEMISTRY[Internet]. 2016;5(2):131-143. Available from: https://sid.ir/paper/230907/en

IEEE: Copy

FARHAD PIRMOHAMMADI ALISHAH, “PETROGRAPHY AND GEOCHEMISTRY OF MIO-PLIOCENE VOLCANIC MASSES IN THE SOUTHWEST OF BOSTANABAD, AND COMPARE IT WITH THE CLASSIC ADAKITE,” GEOCHEMISTRY, vol. 5, no. 2, pp. 131–143, 2016, [Online]. Available: https://sid.ir/paper/230907/en

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