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)
Sedimentology
Provenance of siliciclastic deposits of Jeirud Formation in central Alborz

Majid Khazaee; Mahbobeh Hosseini-Barzi; Abbas Sadeghi; Hossein Mosaddegh

Volume 27, Issue 108 , September 2018, , Pages 45-56

https://doi.org/10.22071/gsj.2017.78582.1047

Abstract
  The provenance of Jeirud Formation deposits (upper Devonian) in central Alborz has been investigated from study of siliciclastic sandstones (petrography, modal analysis and Heavy minerals assemblage) and mudstones (major and minor elements geochemistry). An integration of results suggest a mixture of ...  Read More

Paleobiodiversity of Permian (Yakhtashian-Dzhulfian) small foraminifera in Abe-Garm, Gazvin section,

M Medadi; H Mosaddegh; S.H Aleali; M.R Majidifard

Volume 26, Issue 101 , December 2017, , Pages 127-138

https://doi.org/10.22071/gsj.2016.41048

Abstract
  Some  paleobiodiversity  indices such as total diversity, stand diversity, origination and extinction rates of Permian (Yakhtashian- Dzhulfian) small foraminifera were analyzed based from an outcrop in Abe-Garm area, Gazvin. Some important bizones that recognized by Taraz (1969), Taraz et al. ...  Read More

Biostratigraphy of the Eocene carbonate deposits in the eastern part of the central Iran (Torbat-e-Jam area): stratigraphic significance of Nummulites perforatus and calcareous nannofossils

H Mosaddegh; M Hadi; M Parandavar

Volume 26, Issue 102 , March 2017, , Pages 91-100

https://doi.org/10.22071/gsj.2017.44127

Abstract
  The Eocene marine deposits in the Chenarbu section in Torbat-e-Jam region (eastern part of Central Iran Zone) have been biostratigraphically studied based on large benthic foraminifera coincide with Shallow Benthic Zones (SBZ) and Calcareous Nannofossils, according to standard worldwide zones (NP). This ...  Read More

Depositional environment and sequence stratigraphy of the Jeirud Formation in Deh-Sufian section, central Alborz

M Khazaee; M Hosseini-Barzi; A Sadeghi; H Mosaddegh

Volume 26, Issue 102 , March 2017, , Pages 101-116

https://doi.org/10.22071/gsj.2017.44130

Abstract
  The Jeirud Formation (Upper Devonian) in Deh-Sufian section of northeast of Shahmirzad consists of siliciclastic and carbonate deposits. In the study area lower boundary of the Jeirud Formation with fine grain clastic deposits of the Mila Formation is erosional (Disconform) and has been conformably overlain ...  Read More

Biostratigraphic Interpretation and Systematics of Some Alveolina Species Assemblages in the Ziarat Formation from Soltanieh Mountains (Western Alborz)

M Hadi; H Mosaddegh; N Abbassi

Volume 24, Issue 95 , June 2015, , Pages 39-44

https://doi.org/10.22071/gsj.2015.42254

Abstract
  Carbonate successionsof the Ziarat Formation with introduce the Baghdareh and Gheynarjehsections in the Soltanieh Mountains(southern Zanjan) are rare locality in the western Alborzzone,which are contains of great abundance oflarge benthic foraminifera (LBF), particularly species of Alveolina. In fact, ...  Read More

Geochemical Changing of the Devonian–Carboniferous Transition in the Labnesar Section, N Damghan, Iran

K Mohammadi; N Taghipour; H Mosaddegh

Volume 24, Issue 94 , March 2015, , Pages 217-228

https://doi.org/10.22071/gsj.2015.42621

Abstract
  Due to some environmental variations such as sea level fluctuation and the Hangenberg mass extinction event, geochemical variations of elements have occurred in the Devonian-Carboniferous transition, which some of these elements are useful indicators to display the source of sediments and the sea level ...  Read More