Volume 33 (2023)
Volume 32 (2022)
Volume 31 (2021)
Issue 4
Issue 3
Volume 31, Issue 3, Serial Number 121, Autumn, 2021
Issue 2
Volume 31, Issue 2, Serial Number 120, Summer 2021
Issue 1
Volume 31, Issue 1, Serial Number 121, Spring, 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)
Original Research Paper Stratigraphy and Palaeontology
Circulichnis and other trace fossils from Member 5 of Mila Formation in Tuyeh-Darvar section, Eastern Alborz Mountain, north Iran

Nasrollah Abbassi; Reza Aharipour

Volume 31, Issue 4 , December 2021, Pages 1-12


  Mila Formation includes five members in the Tuyeh-Darvar section, west Damghan. Fifth Member of formation comprises alternations of calcareous shale, limestone and green shales. Trace fossils of this member includes Cruziana problematica, Gordia isp., Helminthopsis abeli, Helminthopsis tenuis, Palaeophycus ...  Read More

Original Research Paper Sedimentology
Geochemistry, and Geodynamic of Upper Cretaceous shale, Northern Sanandaj-Sirjan Zone, Western Iran

Hadi Amin-Rasouli; Hossein Azizi; shahla mahmodyan

Volume 31, Issue 4 , December 2021, Pages 13-28


  The Upper Cretaceous succession (UCS) of the north Sanandaj-Sirjan zone consists of five units. The units are 2000 m thick, including shale, sandstone, limestone, intrafomational conglomerate with interbedded basaltic- andesitic lava. This succession is unconformably underlain by Lower Cretaceous and ...  Read More

Original Research Paper Petrology
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

Original Research Paper Stratigraphy and Palaeontology
Lithostratigraphy and Biostratigraphy of the Cheleken Formation Based on Calcareous Nannoplankton in Gorgan Plain (South Caspian Bain)

Mahmoud sharafi; Nasim Mousavi; Mehran Moradpour; Bijan Biranvand; ebrahin Abdollahi; Hossein Soltani

Volume 31, Issue 4 , December 2021, Pages 43-56


  Based on lithostratigraphy analysis, Cheleken Formation in the studied section of the Gorgan plain, subdivided into lower sandstone and upper mudstone/marl units. Based on petrographic analysis, the sandstone sediments include low textural and compositional maturity litharenite and sublitharenite. Conglomerates ...  Read More

Original Research Paper Remote Sensing
Combination of Remote Sensing and Fractal Modeling for Identification of Alteration Zones in Tirka Area, NE Iran

Mina Zamyad; Peyman Afzal; Mohsen Pourkermani; Reza Nouri; Mohammadreza Jafari

Volume 31, Issue 4 , December 2021, Pages 57-68


  Tirka area is situated in NE Iran as a part of the TCMB which consists of Paleogene sediments and volcanic rock units with a combination of Eocene intermediate to basic rocks. The research aim is to determine the alteration zones using C-N fractal model based on ASTER satellite images. First, the ASTER ...  Read More

Original Research Paper Hydrology
Introduction of geomorphological rock mass strength classification as a criterion for estimating the groundwater inflow into tunnels

Masoud Morsali

Volume 31, Issue 4 , December 2021, Pages 69-78


  Prediction of groundwater inflow into tunnels during excavation is one of the most important problems of tunneling projects. There are many analytical and empirical methods to predict the amount of groundwater entering the tunnels, which are generally not highly accurate. Permeability and water head ...  Read More

Original Research Paper Economic Geology
Application of Singularity Index (SI), Fuzzy-Gamma and AHP methods for Pb-Zn Prospecting in the Khondab sheet, Malayer-Isfahan Metallogenic Zone, Iran

Mohammad Amin Jafari; Ahad Nazarpour; Ghodratollah Rostami Paydar

Volume 31, Issue 4 , December 2021, Pages 79-96


  In this research, using fuzzy logic (gamma) methods, analytic hierarchical analysis (AHP), and based on the weighting of exploratory layers by the opinion of geoscientists, modeling of mineral potential for lead and zinc metals in the Khondab sheet. The geochemical layer related to Pb-Zn metals has been ...  Read More

Original Research Paper Petrology
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

Original Research Paper Economic Geology
Determination of mineralization conditions based on fluid inclusions data in the Oshvand- Skarn deposit, W of Iran

Mehrdad Movahedi; Mohammad Yazdi; Mehrdad Behzadi

Volume 31, Issue 4 , December 2021, Pages 111-122


  The Oshvad skarn type deposit was formed during the intrusion of a felsic mass into the Permian and Triassic carbonate rocks and ion exchange occurred between the intrusion mass and these units. In order to determine the properties of the mineralizing fluid in this skarn, several fluid inclusions in ...  Read More

Original Research Paper Tectonics
Low temperature Thermochronometry and Structural constrains on evolution pattern of the Bozgoosh and Chehel-Nour Mountains intersection, NW Iran

Ebrahim Gholami; Asghar Ahmadi; mohammadmahdi Khatib; Saeed Madanipour

Volume 31, Issue 4 , December 2021, Pages 123-138


  Located at the Arabia-Eurasia collision zone, the E-W trending Bozgoosh Mountain aligned perpendicularly to N-S trending Chehel-Nour Mountain in the northwest of the Iranian Plateau. There is not any thermochronometry study has been performed to determine the initial time of their uplift and exhumation. ...  Read More