Volume 33 (2023)
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)
Petrofabrics and Final Strain of Muteh-Golpayegan Amphibolites: Evidence of transpressional Deformation in Sanandaj-Sirjan Metamorphic Belt

Behnaz Bakhtiari; Nahid Shabanian; Alireza Davoudian; Hossein Azizi

Articles in Press, Accepted Manuscript, Available Online from 25 February 2023


  ABSTRACTThe Muteh–Golpaygan Metamorphic Complex is located within the center of the Sanandaj-Sirjan Metamorphic Zone. The strain parameter measurements including strain ratio in the XZ principal plane of strain ellipsoid (RXZ), strain ellipsoid shape (K), and strain intensity (D) exhibit constrictional ...  Read More

High-Cr chromium spinels in Golashkard ultramafic unit, Faryab complex, southeast of Sanandaj-Sirjan, Iran.

Afsaneh Naseri Esfandagheh; Mohammad Rahgoshay; Sasan Bagheri

Articles in Press, Corrected Proof, Available Online from 25 March 2023


  The Haji-Abad-Esfandagheh-Faryab ophiolitic belt is one of the most famous chromite-bearing occurrences in the south of Iran. In recent years, the ophiolitic belt of Haji-Abad-Esfandagheh-Faryab has been the focus of attention of many geologists interested in ophiolitic complexes and economic geology. ...  Read More

Amphibole crystallization and its role in the origin of the adakitic rocks from the Malayer-Boroujerd igneous complex

Amir Esna-Ashari; Massimo Tiepolo

Volume 33, Issue 1 , February 2023, , Pages 107-122


  The Malayer-Boroujerd plutonic complex (MBPC) is part of the Sanandaj-Sirjan continental arc of Iran resulted from subduction of Neotethys oceanic crust below Central Iran microcontinent. A number of adakitic samples have recently been reported in the MBPC. This study shows that among the various petrogenetic ...  Read More

Petrogenesis of granitoids from Dalfard area (Northwest of Jiroft): Evidence of Volcanic arc tectonic setting in Urumieh – Dokhtar magmatic belt

Zeinab Rahmanian; Gholam Reza Ghadami; Hamid Ahmadipour; Mohammad Poosti

Volume 33, Issue 1 , February 2023, , Pages 123-142


  Dalfard granitoids are located in the south-east of Kerman province and in the margins mainly include quartz diorite. Quartz diorites contain main minerals plagioclase, amphibole and biotite  and this work reveals that the rocks in this area are I type granitoides and they belong to calc-alkaline ...  Read More

Sr-Nd-Pb isotope and geochemistry of Anomaly 21 plutonic rock, Bafq metallogenic district (Central Iran): the evidence of Late Neoproterozoic magmatism

Niloofar Nayebi; Dariush Esmaeily; Soroush Modabberi; Ryuichi Shinjo

Volume 33, Issue 1 , February 2023, , Pages 143-160


  Anomaly 21A, as a part of Bafq iron-apatite ore metallogenic district, is located in Central Iran, and encompasses wide spectrume of igneous, sedimentary and metamorphic rocks. The igneous rocks that show narrow geochemical variations and dominantly plot in the monzonite to monzodiorite fields, are ...  Read More

Geochemistry and petrology of Upper Triassic basic volcanic rocks in the Central Alborz region, south of Pole Sefid

Saeid Samarbakhsh; Mohammad Hashem Emami; Seyed Mojtaba Mortazavi; Mansour Vosoughi-Abedini

Volume 33, Issue 1 , February 2023, , Pages 161-178


  The study area, situated 50 km north of Ghaemshahr, structurally belongs to the Central Alborz tectonic zone. The volcanic rocks of the area, including basalt, andesite, trachyandesite, and dolerite are the products of fractional crystallization and some contamination processes. Clinopyroxene, olivine, ...  Read More

Mineral chemistry, thermobarometry and genesis of clinopyroxenes in Silurian mafic metavolcanic rocks of Maku, North West of Iran

Farzaneh Valinasab Zarnagh; Mohsen Moayyed; Ahmad Jahangiri; Hossein Azizi

Volume 32, Issue 4 , December 2022, , Pages 15-28


  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

Geochemistry and petrogenesis of intrusive rocks of Chadormalu deposit; an implication on whole rock geochemistry and Sr-Nd-Pb isotopes

Niloofar Nayebi; Dariush Esmaeily; Sourosh Modabberi; Ryuichi Shinjo; Reza Deevsalar; Bernd Lehmann

Volume 32, Issue 4 , December 2022, , Pages 29-42


  Sr-Nd-Pb isotopes and whole-rock geochemical analyses were carried out on plutonic rocks of the Chadormalu district to constrain the magmatic history of the Cadomian orogeny of the northern Gondwana margin during Late Precambrian–Early Paleozoic times. Despite the similarities in the geochemical ...  Read More

Petrography and mineral chemistry of tephritic dykes and associated xenoliths, the northeast of Meshkinshahr (the northwest of Iran)

Mohammad Fadaeian; Aminollah Kamali; Kourosh Mohammadiha

Volume 32, Issue 4 , December 2022, , Pages 43-64


  The studied area is located in Ardabil province and the northeast of Meshkinshahr city and structurally in Alborz-West-Azerbaijan zone. Tephritic dykes have pyroxenite and gabbro xenolites. Mineralogy of tephritic dykes and xenolites includes plagioclase, clinopyroxene, analcime, amphibole, olivine and ...  Read More

Geochemical variation and petrogenesis of magmatic rocks in the north of Ardabil: Implications for determination of the tectonomagmatic pattern of northwestern Iran

Ali Lotfi Bakhsh

Volume 32, Issue 4 , December 2022, , Pages 65-82


  In the north of Ardabil (from Namin to Lahroud) there are widespread sequences of Eocene and Quaternary mafic to intermediate and felsic magmatic activities with different compositions. The composition of these rocks varies from basaltic lavas as well as dacitic and rhyolitic domes in Namin to basalt ...  Read More

Geology, geochemistry and petrogenesis of Taftan volcano: An approach to geodynamic of Makran-Chagai magmatic arc

Jalil Ghalamghash; Meysam Akbari; Reza Jamal

Volume 32, Issue 4 , December 2022, , Pages 83-102


  The Taftan volcano hosts an extensive volcanic activity during Late Miocene to Quaternary where took place over Makran-Chagai subduction zone. Taftan rocks are mainly basaltic andesite, andesite, trachyandesite, and dacite that occur as lavas and pyroclastic rocks. They are characterized by basic-intermediate ...  Read More

Mineral chemistry of Cr-Spinel in the Sargaz-Abshur ultramafic-mafic intrusion, SE of Iran : An implication to tectonic setting of the intrusion

Seyed Ali Akbar Asadi; Habibollah Ghasemi; Mohsen Mobasheri

Volume 32, Issue 4 , December 2022, , Pages 103-118


  Sargaz-Abshur (Sikhoran) ultramafic-mafic complex, which is situated in Esfandagheh area, SE Sanandaj-Sirjan metamorphic- magmatic zone,  intruded into Upper Paleozoic- Triassic metamorphic rocks and covered by Jurassic sedimentary rocks. This complex consists of harzburgite and porphyroclastic ...  Read More

Petrography and application of mineral chemistry and thermobarometry of amphibolites in Jandaq metamorphic complex: Evidence of paleo-tectonic events in Central Iran

Arefeh Heidarianmanesh; Seyed Mohsen Tabatabaimanesh; Narges Shirdashtzadeh

Volume 32, Issue 4 , December 2022, , Pages 119-142


  Based on field observation and petrographic evidence, by progress in metamorphic degrees, a wide variety of metabasites have formed following the metamorphism at amphibolite facies (metamorphism M1) in the east of Jandaq. Thermobarometry of plagioclase- amphibole pairs indicate temperature ranges were ...  Read More

Tephra, Lava flow, Nuee Ardente and Lahar Hazard Zoning of Damavand Volcano

Ahmad Khaiatzadeh; Ahmad Abbasnejad; Hojjatolah Ranjbar; Hamid Ahmadipour; Behnam Abbasnejad

Volume 32, Issue 4 , December 2022, , Pages 355-366


  Damavand is one of the most potential volcanoes of Iran for future eruption. Such indicators as having a slightly- eroded cone, presence of many thermal springs, eruption activity in Late Quaternary, as well as the progression of the generating tectonic regime, all, attest this claim. The intensity of ...  Read More

Application of plagioclase mineral textures in lava, ash fall and surge deposits to examine young Damavand magmatic processes

Mohsen Zadsaleh; Fariborz Masoudi; Hamed Pourkhorsandi; Karen Fontijn

Volume 32, Issue 2 , July 2022, , Pages 13-30


  Damavand is a young volcanic edifice with an elevation of 5610 meters formed in the middle of the central Alborz Mountain range (N Iran) during the Quaternary. Its edifice is composed of trachyte and trachyandesite rocks, pyroclastic fall and flow deposits and lahars, formed during several eruptions ...  Read More

Tectonic environment and petrogenesis of igneous rocks of Tashvir area, Tarom mountains, northwest of Iran

Reza Jamal Omidi; Saeid Hakimi Asiabar; Shahrooz Haghnazar; Mansour Vosoghi Abedini

Volume 32, Issue 2 , July 2022, , Pages 105-120


  Tarom mountains are located at the southwestern end of the Alborz mountain range with an approximate northwest-southeast direction. Tashvir region is a part of the northern margin of the Tarom mountains. Most igneous rocks in this area include basalt, andesitic basalt, and interlayers of tuff. Enrichment ...  Read More

Geochemistry and origin of the ortho- amphibolites inTakhte-Soleyman (NE Takab)

Ziba Khodaean Chegeni; Nematollah Rashidnejad Omran; Ali Akbar Baharifar; Reza Nozaem; Carmela Vaccaro; José Francisco Santos

Volume 32, Issue 2 , July 2022, , Pages 133-148


  Takhte-Soleyman ortho-amphibolites as a part of Takab metamorphic complex are located in Northeast Takab. These rocks consist of amphibolite, Garnet-amphibolite, Kyanite-Garnet-amphibolite, Hornblendite and Epidote-amphibolite. Petrography and whole- rock geochemistry show that basalt, andesite and/or ...  Read More

Geochemistry and Petrogensis of Mafic Dykes of Zarrin District, NE Ardekan, Central Iran

Nasim Askari; reza Zarei Sahamieh; Jafar Omrani; Mohamad Heshem Emami; C., Vaccaro; J. F. Santos

Volume 31, Issue 3 , December 2021, , Pages 17-28


  Zarrin Mafic dikes, which outcrop in the Western Yazd block, Central Iran, trending NW–SE, emplaced into the Zarrin granitoid. They are sub-alkaline gabbro; characterized by intergranular and mylonitic foliated texture. Geochemical data reveal the Zarrin mafic dikes are from the partial melting ...  Read More

Geochemistry and tectono-magmatic setting of Gezeldash daghi Miocene andesitic lavas (NW Marand), Eastern Azerbijan.

Ismail KhanChuban; Behzad Haj alilou; Mohsen Moayyed; Mohamadreza Hosseinzadeh; Morovat Faridazad

Volume 31, Issue 4 , December 2021, , Pages 29-42


  In the Gezeldash_daghi region, there is a significant outcrop of Miocene volcanic activity with andesitic composition associated with pyroclastic deposits including tuff, breccia and agglomerate. These rocks have porphyry to microporphyry texture with coarse crsytals of pagioclase, and matrix includes ...  Read More

Petrology and geochemistry of Oligocene rhyolite lavas, from south of Qezel Ozan River: post- collision acidic volcanism

Tahereh Parsa; Monireh Kheirkhah; Mir Ali asghar Mokhtari

Volume 31, Issue 3 , December 2021, , Pages 49-60


  Cenozoic acidic volcanic rocks at the south of Qezel Ozan River are located within the Western Alborz-Azarbaijan magmatic zone and northern part of the Iranian-Turkish Plateau. The Oligocene acidic lavas in north part of Zanjan show rhyolitic to dacitic composition.  Hyaloporphyritic to hyalomicrolithic ...  Read More

Oligo-Miocene extrusive rocks of Razan-Avaj area (Urumieh-Dokhtar magmatic belt): evidence of OIB- like magmatism in supra-subduction zone setting

Morteza Delavari; Khadijeh Ghorbani; Amir Ali Tabbakh Shabani

Volume 31, Issue 4 , December 2021, , Pages 97-110


  The Urmieh- Dokhtar magmatic belt (UDMB) lying parallel to the Zagros suture zone is resulted from the subduction of Neotethyan oceanic lithosphere beneath the southern margin of Eurasia. The studied volcanic rocks of the Razan- Avaj area are part of UDMB magmatism. These rocks are composed of olivine-basalts, ...  Read More

Geothermobarometry of volcanic rocks from N Torud, NE Iran

Najla Saki; Ghasem Ghorbani

Volume 31, Issue 3 , December 2021, , Pages 95-108


  The study area is located in the N Turood, S Shahrood, and NE of Central Iran structural zone. Many basaltic dikes in this area intruded into the Eocene volcanic rocks and they also contain many gabbroic enclaves. Plagioclase (labradorite, bytownite-anorthite), amphibole (calcic, pargasite- magnesiohastingsite), ...  Read More

Thermo-barometery of Permo-Triassic mafic Igneous intrusion, Talu, Eastern Alborz Zone

shirin shahabi; Habibollah Ghasemi; Mehdi Rezaei-Kahkhaei; Zhai Minggou

Volume 31, Issue 2 , September 2021, , Pages 173-188


  In the Talu area at NE Damghan in the Eastern Alborz Zone, the Permo-Triassic carbonate sequences host several mafic igneous inrusions with olivine gabbro, gabbro and alkali-diorite compositions. The most important rock-forming minerals of these intrusions are olivine, clinopyroxene, amphiboles and plagioclase. ...  Read More

Petrography and geochemistry of Zardkuh igneous complex, Southeast of Iranshahr

Mostafa Delkhah; Habib Biabangard; Hamedreza Soloki

Volume 31, Issue 2 , September 2021, , Pages 189-198


  Zardkuh igneous complex is located in 35 km Southeast of Iranshahr and is geologically situated flysh zone and the Sistan-suture zone. Rock units in the area are Ophilitic rocks (upper Cretaceous), Eocene flysh and Oligomiocene intrusive and extrusive rocks (Zardkuh igneous complex). Patterns of minor ...  Read More

Mineralogy, geochemistry and protolith of Neoproterozoic gneisses in Ghoshchi (North Urmia)

Mahsa Jamshidnia; manijeh Asadpour; Masoumeh Ahangari

Volume 31, Issue 1 , June 2021, , Pages 1-12


  Qushchi gneisses in the north of Urmia city are a part of magmatic-metamorphic complex in NW of Sanandaj-Sirjan zone. Gneiss, with eldsparses and schist, form Precambrian basement of the area. These rocks contain lipidogranoblastic, augen, porphyroblastic and myrmekite textures, and composed of quartz+ ...  Read More