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)
Stratigraphy and Palaeontology
Biostratigraphy, sequence stratigraphy and depositional environment of Dalan and Kangan formations in Lavan Gas Field in Persian Gulf, with emphasis on Permian-Triassic boundary

Somayeh Baharlouei Yancheshmeh; Ebrahim Ghasemi Nejad; Hossain Rahimpour-Bonab; Seyyed Ali Aghanabati

Volume 27, Issue 108 , September 2018, , Pages 169-180

https://doi.org/10.22071/gsj.2017.78903.1055

Abstract
  Permo- Triassic subsurface section at Lavan 3 Well in Lavan Gas Field exhibits a 85 m-thick succession of limy dolostone and dolomitic limestone bearing anhydrite in the upper Dalan Formation, as well as a 154 m-thick succession of limy dolostone and dolostone with anhydrite ...  Read More

Paleoclimate changes recorded in Gurpi Formation in south of Ilam based on Playnomorphs and Foraminifera

E. Zarei; E. Ghasemi-Nejad; A. Dehbozorgi

Volume 27, Issue 105 , December 2017, , Pages 245-252

https://doi.org/10.22071/gsj.2017.53956

Abstract
  The Gurpi Formation was studied from different aspects at two sections, Farhadabad and Kavar, in southwest and southeast of Ilam where it is composed of 205 m and 158 m of grey to blue marl and shale beds and occasionally thin beds of argillaceous limestones with two formal members of Seymareh (Lopha) ...  Read More

Palaeobathymetry of the Sarvak Formation in Well AZ 354 of Ahwaz Oil Field based on Foraminifera

M.H Kazemzadeh; E Ghasemi-Nejad; H Vaziri-Moghaddam

Volume 24, Issue 94 , March 2015, , Pages 81-90

https://doi.org/10.22071/gsj.2015.42585

Abstract
  The Sarvak Formation in Well AZ 354 of Ahwaz Oil Field attains a thickness of 1712 meters and contains creamy to white and occasionally gray limestone. The recorded foraminifera indicate upper Albian to lower Turonian age for this formation. In order to study paleobathymetry and sea level changes during ...  Read More

Paleoecology and Paleoenvironment of the Basal Purple Shales of the Pabdeh Formation at Bisheh-Deraz Section, Southwest of Iran

J Rabbani; E Ghasemi-Nejad; A.R Ashouri; M Vahidinia

Volume 24, Issue 94 , March 2015, , Pages 165-172

https://doi.org/10.22071/gsj.2015.42601

Abstract
  The basal unit of the Pabdeh Formation at Bisheh-Deraz section composes of 47m purple to green to grey shale and marl. These beds gradually change to shale and argillaceous limestone in the top of the section. In order to study paleoecology and paleoenvironment of these beds, palynological evidences ...  Read More

Palynostratigraphy of the Dalichai Formation at Talu section (NE Damghan) based on Dinoflagellate cysts

Z. Boroumand; E. Ghasemi- Nejad; M. R. Majidifard

Volume 22, Issue 87 , December 2013, , Pages 3-8

https://doi.org/10.22071/gsj.2013.53825

Abstract
  The Dalichai Formation at Talu section, 24 kilometers NE of Damghan is studied Palynologically. The Middle Jurassic sediments with a thickness of 168 meters in this section contain grey to green marl and grey marly limestone. A total of 35 samples were collected systematically and 200 palynological sildes ...  Read More

Palynostratigraphy and Reconsideration of the Shemshak Group Based on Dinoflagellate Cysts

E. Ghasemi-Nejad; M., Asadi; M. Shahmoradi; A. Aghanabati; T. Mohtat

Volume 22, Issue 86 , December 2012, , Pages 99-106

https://doi.org/10.22071/gsj.2012.54071

Abstract
  The Nayband Formation was sampled at Chal-Sefid and Zard mountains in central Iran, for palynology and palynostratigraphy in order to take the advantage of dinoflagellate cysts to locate the Triassic and so called Jurassic boundary. The Chal-Sefid section is located about 45 km southwest of Kashan city ...  Read More

Palaeobathymetry of the Ziarat-Kola Section at the Upper Maastrichtian, Central Alborz, through Planktonic and Benthic Foraminifera

M. Asgharian Rostami; E. Ghasemi-Nejad; M. Shafiee Ardestani

Volume 20, Issue 78 , December 2011, , Pages 27-34

https://doi.org/10.22071/gsj.2010.54585

Abstract
  At this research are studied late cretaceous sediments at Ziarat-kola section, Central Alborz, in order to Palaeobathymetry and sea level change. These sediments are with about 200m thickness consist of monotonous Marl and limy marl. Based on Planktonic foraminifera gain Upper Maastrichtian stage (Abathomphalus ...  Read More

Biostratigraphy and Studying the Hypothesis uses of Rugoglobigerina in Appointing the Paleosalinity in Central Alborz, Maastrichtian

M. Asgharian rostami; E. Ghasemi-Nejad; M. Shafiee ardestani; B. Balmaki

Volume 20, Issue 80 , January 2011, , Pages 23-32

https://doi.org/10.22071/gsj.2011.55133

Abstract
  In order to studying salinity and biostratigraphy in Central Alborz basin, two sections Jorband and Ziarat-kola are sampled and studied Planktonic foraminifera and Echinoids fossil. Studying of foraminifera In Ziarat-Kola section determining three biozone by planktonic foraminifera. 1: Racemiguembelina ...  Read More

Biostratigraphy of the Abderaz Formation at Type Section Using Planktonic Foraminifera

M. Shafiee Ardestani; E. Ghasemi-Nejad; H. Vaziri Moghaddam

Volume 19, Issue 75 , January 2010, , Pages 25-34

https://doi.org/10.22071/gsj.2010.55427

Abstract
  In order to study the fossil contents of the Abderaz Formation for biostratigraphical purposes the 300 meters thick section was sampled at type section. The sequence is mainly made up of grey shales and marls with two units of chalky limestone in upper part. The lower contact of the formation with Aitamir ...  Read More

Water-Level Fluctutions and Sequence Stratigraphy of the Ab-Talkh Formation at Type Section

E. Ghasemi-Nejad; & Z. Rezaei

Volume 20, Issue 77 , January 2010, , Pages 91-98

https://doi.org/10.22071/gsj.2010.55341

Abstract
  The Ab-Talkh Formation (Campanian- Maastrichtian) is one of the lithostratigraphic units of the Kopeh-Dagh sedimentary basin. So far no high resolution sequence stratigraphy has been done on this formation. In this study, we use the fossil evidences to analyse the formation in the sequence stratigraphy ...  Read More