Volume 32 (2022)
Volume 31 (2021)
Volume 30 (2020)
Volume 29 (2020)
Volume 28 (2019)
Volume 27 (2018)
Volume 26 (2017)
Volume 25 (2016)
Volume 24 (2015)
Volume 23 (2014)
Volume 22 (2013)
Volume 21 (2012)
Volume 20 (2011)
Volume 19 (2010)
Volume 18 (2009)
Volume 17 (2008)
Volume 16 (2007)
Petrology
Mineral chemistry, thermobarometry and genesis of clinopyroxenes in Silurian mafic metavolcanic rocks of Maku, North West of Iran

Farzaneh ValinasabZarnagh; Mohsen Moayyed; Ahmad Jahangiri; Hossein Azizi

Articles in Press, Corrected Proof, Available Online from 16 February 2022

http://dx.doi.org/10.22071/gsj.2022.307112.1944

Abstract
  There are discontinuous outcrops of volcanic rocks in the West Azarbaijan province and in the north of Maku city. These volcanic complex were bimodal and compose of acidic and basic lava and pyroclastic rocks. Mineral chemistry studies show that clinopyroxenes in the studied rocks are diopside. These ...  Read More

Petrology
Petrography and Petrology of early Paleozoic bimodal metavolcanic rocks in North of Maku, North West of Iran

Mohsen Moayyed; Farzaneh ValinasabZarnagh; Ahmad Jahangiri; Hosein Azizi

Volume 30, Issue 118 , January 2021, , Pages 109-122

http://dx.doi.org/10.22071/gsj.2020.196325.1693

Abstract
  there are Discontinuous outcrops of volcanic rocks in the northern regions of Maku. The volcanic rocks were metamorphosed in the green schist facies. These volcanic complex were bimodal and compose of acidic and basic lava and pyroclastic rocks. The lava of this unit covers the Cambrian and equivalent ...  Read More

Petrology
Mineral chemistry and geothermobarometry of xenoliths within Peliocene volcanic rocks from the Ghikhlar area (Northwest of Marand, NW Iran)

Mohsen Moayyed; Mohamad Amin Safikhani; Robab Hajialioghli; Nasir Amel; Ahmad Jahangiri

Volume 29, Issue 114 , December 2019, , Pages 153-164

http://dx.doi.org/10.22071/gsj.2019.125627.1435

Abstract
  The study area is located at the Mishow mountain ranges in NW Marand town. The main outcropping rocks are Pliocene volcanic and volcaniclastic rocks. Lamprophyre, mica pyroxenite, amphibolite and carbonate rocks occure as xenoliths within andesites. The main rock forming minerals for lamprophyre xenolith ...  Read More

Petrology
Petrography, mineral chemistry and P-T estimation of pelitic schists from north of Golpayegan, Isfahan province

Seyyed Navid Seyyed Mardani; M. Moazzen; Ahmad Jahangiri

Volume 29, Issue 113 , November 2019, , Pages 3-12

http://dx.doi.org/10.22071/gsj.2018.134649.1493

Abstract
  The Muth-Golpayegan metamorphic complex is situated at north of Golpayegan city in the Isfahan province. This complex is constituted from different metamorphic rocks including variety of pelitic schists, amphibolite, gneiss, quartzite and marble. Garnet schists are dominant lithology in the area and ...  Read More

Economic Geology
Mineralization and geochemistry of Arsenic in alteration system of Qezelbalaq district, Hashtrud, southeast of Tabriz

shirin fatahi; Ahmad Jahangiri; Farhad Maleckqasemi; seyedhasan tabatabaei

Volume 28, Issue 110 , December 2018, , Pages 149-160

http://dx.doi.org/10.22071/gsj.2018.99081.1266

Abstract
  Abstract Qezelbalaq Arsenic ore deposite is located in Hashtrud, 120 km from southeast of Tabriz. In this district effect of dacitic Sahand domes on sandy limestones and Qom formation sandstone with Oligomiocene age and pyroclacitic units with Miocene age leads to formation of various types of alteration ...  Read More

Mineral chemistry, thermobarometry and genesis of Clinopyroxenes in dyke swarm of northeast of meshkinshahr, NW Iran

M Fadaeian; A Jahangiri; M Moayyed

Volume 25, Issue 100 , September 2016, , Pages 19-36

http://dx.doi.org/10.22071/gsj.2016.40672

Abstract
  The study area is located in the Ardabil province and in the north east of Meshkinshahr city.More than 200 small and large Eocene age dykes have outcrops in this area with basaltic, tephritic, andesitic and trachy andesit composition. Clinopyroxene, plagioclase, analcime and sometimes coarse olivine ...  Read More

Using Clinopyroxene Composition in the Petrogenesis of the Gabbros from Misho Mountain in SW Marand- Northwestern Iran

Z Azimzadeh; A Jahangiri; E Saccani; Y Dilek

Volume 24, Issue 94 , March 2015, , Pages 61-72

http://dx.doi.org/10.22071/gsj.2015.42743

Abstract
  The Misho gabbroic massif with an east- west trend, 30 Km length and 7 Km wıdth is penetrated in the Infra-Cambrian Kahar  formation. The micro-gabbroic dykes have cut this intrusive massif. Gabbros have homogenous compositions and major phases are plagioclase and pyroxene and minor minerals are ...  Read More

Petrogenesis of Plio-Quaternary Post-Collisional Potassic and Ultra-Potassic Rocks in Northwest Marand

G. Ahmadzadeh; A. Jahangiri; M. Mojtahedi; D. Lentz

Volume 20, Issue 78 , December 2011, , Pages 79-86

http://dx.doi.org/10.22071/gsj.2010.54602

Abstract
  In this paper the study of Plio-Quaternary post-collisional magmatism in northwest of Iran and northwest of Marand is considered. The studied Potassic and ultrapotassic (UP) alkaline rocks were erupted at northern part of Urumieh-Dokhtar magmatic arc (UDMA). The studied rocks dispaly microlithic porphyritic ...  Read More

Source and Tectonic Setting East of Sahand (Southeast of Tabriz) Volcanic Rocks Using Geochemical Evidences

F. Pirmohammadi; A. Ameri; A. Jahangiri; Ch. Chen; M. Keskin

Volume 21, Issue 81 , December 2011

http://dx.doi.org/10.22071/gsj.2017.54382

Abstract
  In southeast Tabriz, as a part of Western Albourz-Azarbaijan magmatic belt the vocanic and pyroclastic rocks of Sahand cover vast areas. The volcanic rocks include andesite, dacite, rhyodacite and rhyolite and pyroclastic rocks largely occur as vast ignimbritic outcrops. Based on high LILE/HFSE and LREE/HREE ...  Read More

Petrology and Geochemistry of Shah Ashan Dagh Mafic Rocks and A-type Granite in NE of Khoy, NW Iran

M. Advay; A. Jahangiri; M. Mojtahedi; J. Ghalamghash

Volume 20, Issue 77 , January 2010, , Pages 83-90

http://dx.doi.org/10.22071/gsj.2010.55342

Abstract
  The study area as a part of Maku-Tabriz zone is located in about 20 km NE of Khoy, NW Iran. Shah Ashan Dagh granite covers about 60 km2 of the area and emplaced into Permian host rocks and covered by Oligo-Miocene sedimentary rocks (Qom Formation). The Shah Ashan Dagh intrusive rocks composed of gabbro ...  Read More

Mineral Chemistry and Crystallization Pressure and Temperature of the Quartz-Diorites from the Takht-e-Soleyman Area, NW Iran

R. Hajialioghli; A. Jahangiri; M. Moazzen; G.T.R. Droop; R. Bousquet

Volume 18, Issue 72 , January 2009, , Pages 139-144

http://dx.doi.org/10.22071/gsj.2010.57159

Abstract
  The igneous rocks of Takht-e-Soleyman area in the north western Iran crop out in association with the amphibolites. The contact between igneous rocks and amphibolites is sharp. Igneous rocks in the study area are mainly granodiorite, quartz-monzodiorite and quartz-diorite. Plagioclase and hornblende ...  Read More