Volume 34 (2024)
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)
Petrology
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

https://doi.org/10.22071/gsj.2020.237027.1809

Abstract
  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

Petrology
Petrology and geochemistry of adakitic dacites of the Qarah Chay Neogene caldera, SE Quchan

Marzieh Asadi-Avargane; Mehdi Rezaei-Kahkhaei; Habibollah Ghasemi

Volume 29, Issue 114 , December 2019, , Pages 241-250

https://doi.org/10.22071/gsj.2019.171867.1614

Abstract
  The Qarah Chay Neogene caldera is located at 30 km SE Quchan in the Binalud Zone. The volcanic rocks of the caldera are mainly dacite in composition and composed of plagioclase and amphibole. The rocks present a variety of porphyry, microlitic porphyry, sieve, trachytic and glomeroporphyritic textures. ...  Read More

Economic Geology
Geology, geochemistry and genesis of the Darreh Amrood Pb (Ag) deposit in the Urumieh-Dokhtar magmatic arc, south of Ghohrood

Fardin mousivand; Fayeq Hashemi; Mehdi Rezaei-Kahkhaei; Amir Pakizeh

Volume 29, Issue 114 , December 2019, , Pages 259-268

https://doi.org/10.22071/gsj.2018.122431.1438

Abstract
  The Darreh Amrood Pb (Ag) deposit is located in south of Ghohrood, in the Urumieh-Dokhtar magmatic arc (UDMA). Host rockes to the deposit are Middle to Late Eocene grey-green siliceous tuff and crystal lithic tuff. Geometry of orebodies is stratabound, irregular, and semiconcordant to discordant to layering ...  Read More

Petrology
Evaluation of impact processes in the formation of Neshveh volcanic rocks, NW Saveh

Mehdi Rezaei-Kahkhaei; Dariush Esmaeily; Hanieh Sahraei

Volume 28, Issue 109 , September 2018, , Pages 285-294

https://doi.org/10.22071/gsj.2017.91461.1190

Abstract
  Neshveh volcanic rocks located in the NW Saveh are parts of the Uromeyeh-Dokhtar magmatic arc. The rocks are mainly basalt, basaltic andesite, andesite and trachyandesite in composition. Petrographical studies represent some evidences for the lack of equilibrium between crystals and magma, such as sieve ...  Read More