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)

Original Research Paper Exploration and Mining
Use of the Gray Wolf Optimizer algorithm in separating anomalies from the background, Case study: Alut area

Kamran Mostafaei; Mohammadnabi Kianpour; Mahyar Yousefi

Articles in Press, Corrected Proof, Available Online from 21 June 2024

https://doi.org/10.22071/gsj.2023.401546.2094

Abstract
  This article is devoted to introducing a novel application of the Gray Wolf Optimizer in one of the most challenging issues related to mineral exploration, anomaly separation from the background in stream sediment geochemical studies. The Alut geological sheet, located in the Sanandaj-Sirjan zone, which ...  Read More

Original Research Paper Exploration and Mining
Recovery of nickel from low-grade and high-grade arsenide (nickel) deposits based on comparing the performance of chemolithotrophic and heterotrophic bacteria and investigating the effect of different types of additives

zohreh boroumand; Hadi Abdollahi; Reza Shahbazi; Shabnam Asl Pashaki; MirSaleh MirMohamadi

Articles in Press, Corrected Proof, Available Online from 21 June 2024

https://doi.org/10.22071/gsj.2023.406372.2100

Abstract
  Microbial-leaching of nickel from two arsenide ores (low- and high-grade samples) was precisely investigated. The microbial leaching of nickeline was accomplished with the admixture of mesophilic cultures in shake flasks with pulp densities of 0.5, 1, and 5% as well as 0.5, 1, and 3% respectively. The ...  Read More

Original Research Paper Stratigraphy and Palaeontology
Biostratigraphy of the Gurpi Formation based on planktonic foraminifera in the Fars area, Zagros basin

Maryam Alavi; Abbas Sadeghi; Mohammad Hossein Adabi; Nasrin Hadavandkhani; Yadolah Ezampanah

Articles in Press, Corrected Proof, Available Online from 21 June 2024

https://doi.org/10.22071/gsj.2023.406025.2098

Abstract
  In order to study the biostratigraphy of the Gurpi Formation in the Fars area, a stratigraphic section is selected and sampled in the Sarbalesh anticline. The thickness of the Gurpi Formation in this section is 346.3 meters and its main lithology includes argillaceous limestone and shale. The lower boundary ...  Read More

Original Research Paper Exploration and Mining
Using U-spatial statistics method to identify and classify intensity of geochemical anomalies in the Neysian area

Amir Salimi; Samaneh Barak; Mahyar Yousefi

Articles in Press, Corrected Proof, Available Online from 22 September 2024

https://doi.org/10.22071/gsj.2023.409411.2104

Abstract
  An accurate threshold value makes a precise geochemical separation into anomaly and background areas. The threshold assignment using structural methods are preferred to non-structural methods. In this research, the U-spatial statistics, a structural based method, was used to study soil type geochemical ...  Read More

Original Research Paper Petroleum geology
Geochemical evaluation of potential source rocks based on Rock-Eval Pyrolysis and Vitrinite reflectance analyses in Foroozan oil field

Sadegh Barati Boldaji; Ebrahim Sefidari; Houshang Mehrabi; Seyed Mohammad Zamanzadeh

Articles in Press, Corrected Proof, Available Online from 21 June 2024

https://doi.org/10.22071/gsj.2023.422750.2119

Abstract
  Geochemical evaluation of potential source rocks in Foroozan Field is carried out based on Rock-Eval pyrolysis and vitrinite reflectance analyses. For getting the results, 101 samples for Rock-Eval pyrolysis and 11 samples for vitrinite reflectance analysis were selected from Gurpi, Sarvak, Kazhdumi, ...  Read More

Original Research Paper Stratigraphy and Palaeontology
Biostratigraphy and sequence stratigraphy of the Guadalupian deposits of the Dalan Formation in the eastern of the Qatar-Persian Arc, Persian Gulf.

Fatemeh Rezvannia; Hossein Mosaddegh; Bijan Biranvand; Vahid Tavakoli; Galina Nestell; َAhmad Yahyaei

Articles in Press, Corrected Proof, Available Online from 20 January 2024

https://doi.org/10.22071/gsj.2024.417435.2116

Abstract
  One of the most important carbonate gas reservoirs in the Zagros and Persian Gulf sedimentary basins is the Dalan Formation. This research investigates the microfacies, lithostratigraphy, and sequences of carbonate-evaporite deposits in the Lower member of the Dalan and the Nar member belonging to the ...  Read More

Original Research Paper Economic Geology
The condition of sulfidation state and hydrothermal fluid evolution on genesis of the quartz-sulfide ± gold veins in the Mouchesh deposit (southern Kurdistan): constraints on mineralization, fluid inclusions, and stable isotope of sulfur

Mehdi Moradi; Ebrahim Tale Fazel

Articles in Press, Corrected Proof, Available Online from 29 January 2024

https://doi.org/10.22071/gsj.2024.416998.2115

Abstract
  Mouchesh gold deposit (0.7 Mt @ 1.3 g/t gold) is located in the Takab-Delijan gold belt. Mineralization with several 28 gold-bearing quartz-sulfide veins (N40E-trending, 1 to 10 m wide, and 5 to 200 m long) has been formed in the host of Lower Cretaceous andesite and andesitic lithic tuff units. Open ...  Read More

Original Research Paper Economic Geology
Hydrothermal alteration and gold mineralization in Kharestan-Bidester, Taftan area, southeast Iran

Pooya Seyed Salehi Naeini; Saeid alirezaei

Articles in Press, Corrected Proof, Available Online from 07 February 2024

https://doi.org/10.22071/gsj.2024.436419.2130

Abstract
  The Kharestan-Bidester area, northwest of the Taftan volcano, is covered by a series of Plio-Quaternary lava flows and pyroclastic materials. The area is marked by extensive silicic and argillic alterations. The silicic zones, distinguished by vuggy texture, are bordered by advanced-intermediate argillic ...  Read More

Original Research Paper Petrology
Mineral characteristics and geodynamic setting of Kuh-siah peridotites, N Sabzevar ophiolite, NE Iran

Ghasem Ghorbani; Hanieh Dadgar; Hadi Shafaii Moghadam

Articles in Press, Corrected Proof, Available Online from 17 February 2024

https://doi.org/10.22071/gsj.2024.409365.2110

Abstract
  The mantle sequence of the Kuh Siah ophiolitic suite is located at N Sabzevar and consists of harzburgite, dunite,, lherzolite, pyroxenite, and chromitite lenses. Fo% of olivines in peridotites are between 90-97%, and they have a relatively low NiO and are plotted in the Ezubonin-Mariana peridotites. ...  Read More

Original Research Paper Petrology
Mineralogy and Geochemistry of Biotite in granodiorites of Dalayon Area (South of Borujerd-Iran)

Seyevahid Shahrokhi

Articles in Press, Corrected Proof, Available Online from 10 March 2024

https://doi.org/10.22071/gsj.2024.419564.2117

Abstract
  The Dalayon granitoid is located in the south of Borujerd and, is part of the Sanandaj-Sirjan zone. The lithological composition includes granodiorite, granite, pegmatite-granite, tonalite, quartz diorite, tourmaline-bearing pegmatite, and quartz-tourmaline veins intruded into volcanic and metamorphic ...  Read More

Original Research Paper Geological Environment and Engineering
the 28th July, 2022 Imamzadeh Davood flood ; Lessons for understanding the flood risk in the north of Tehran

razieh Lak; Ali Mohammadi; Javad Darvishikhatooni; Elnaz Aghaali

Articles in Press, Corrected Proof, Available Online from 16 March 2024

https://doi.org/10.22071/gsj.2024.370503.2038

Abstract
  Heavy rain falls in dray seasons with extreme water flow is one of the important factors in very intense damage urban areas and agricultural lands of the of arid and semi-arid plateaus and highlands. In semi-arid area such as southern flank of Alborz Mountain, neglecting the effect of geomorphologic ...  Read More

Original Research Paper Stratigraphy and Palaeontology
Plant Macrofossils of the Kalariz Formation (Rhaetian) in the Javaherdeh region (North of Iran): Dating, Geographical Expansion and their Correlation with the other Rhaetic Florizone in Iran

JAVAD SAADATNEJAD

Articles in Press, Corrected Proof, Available Online from 26 March 2024

https://doi.org/10.22071/gsj.2024.437370.2131

Abstract
  Kalariz formation beds in Javaherdeh area has well exposure for plant macrofossils study. The studied area is located at the northern Alborz structural-facies zone, The Kalariz formation in Javaherdeh section consists of shale, siltstone, sandstone and conglomerate beds with coal veins and intrusive ...  Read More