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
Middle Devonian-Early Carboniferous microscopic fish remains from Khoshyeilagh Formation, Mighan section, Eastern Alborz

Hamta Ranjbar; Abbas Ghaderi; Hossein Gholamalian; Vachik Hairapetian

Volume 34, Issue 1 , March 2024, , Pages 1-18

https://doi.org/10.22071/gsj.2023.389933.2076

Abstract
  Middle Devonian to Lower Carboniferous siliciclastic-carbonate successions in Eastern Alborz are characterized by Khoshyeilagh Formation. It is underlain by the Devonian red siliciclastic sequences and is overlain by the Carboniferous Mobarak Formation, can be divided into three different members; lower ...  Read More

Economic Geology
Investigation of structural characteristic and bond composition of coals of Gheshlagh region, Eastern Alborz: Using of XRD, FT-IR and Raman

nader taghipour; Tahereh Rabani; Reza Zahiri

Volume 29, Issue 113 , November 2019, , Pages 75-88

https://doi.org/10.22071/gsj.2018.82533.1092

Abstract
  Coal deposits in Gheshlagh region are embedded in the sediments of Shemshak formation with lithological units such as sandstone, conglomerate, siltstone, limestone and argillite. For investigation of mineralogy and structural characteristics of Gheshlagh coal seams sampled of eleven coal seams in four ...  Read More

Basic magmatism in the extentional back-arc basin of the Lower-Middle Jurassic on the Northern edge of Central Iran-South of Eastern Alborz zones, Shahrood-Damghan

H. Ghasemi; M. Rostami Hossuri; M. Sadeghian

Volume 27, Issue 107 , June 2018, , Pages 123-136

https://doi.org/10.22071/gsj.2018.63800

Abstract
  The Lower Jurassic basin of northern margin of central Iran structural zone and south of eastern Alborz in Semnan province, contains igneous rocks with basic composition, belonging to early stages of occurrence and development of an immature extensional back arc basin at this time. These basic igneous ...  Read More

Kinematic analysis of positioning of the Western part of Miami fault zone- Eastern Alborz - based on experimental evidence

M Rostamiyan; M Khademi; S.S Eslami; H Shahbazi

Volume 26, Issue 101 , December 2017, , Pages 79-86

https://doi.org/10.22071/gsj.2016.41033

Abstract
  In the western part of Miami fault zone (MFZ) as a partial boundary of two main structural zones (Centeral Iran and Binaloud) in the Iranian plateau, since the fault is covered by alluviums or displaced rocks, poor and limited field data cannot solve the problems concerning deformation history and evolutionary ...  Read More

Analysis of lithofacies and sedimentary conditions of Paleocene detrital succession in Eastern Alborz, Iran

R Farokhnejad; B Esfandiari; A Motamed

Volume 26, Issue 101 , December 2017, , Pages 211-218

https://doi.org/10.22071/gsj.2016.41068

Abstract
  In this paper the Fajan Formation of Paleocene age with a thickness of 172.5 meters is studied in northwest Shahroud (Eastern Alborz). Main lithology of this formation, at the studied section, consists of conglomerate and sandstone. The formation disconforably overlain  upper Cretaceous limestones ...  Read More

Palaeoenvironmental conditions of Gheshlagh coal deposits (Eastern Alborz) based on evidences of petrography and facies

T Rabani; N Taghipour; R Aharipour

Volume 25, Issue 99 , June 2016, , Pages 271-280

https://doi.org/10.22071/gsj.2016.40918

Abstract
  Gheshlagh district contains coal deposits in a large syncline in Shemshak group sediments in East Alborz. To determine the palaeoenvironmental setting of the coal deposits based on organic and mineral components, eleven samples from coal seams from four active mines are collected. Minerals such as quartz, ...  Read More

Geologyand Origin of Oras-kuh Pb-Zn Deposit in Eastern Albors (Semnan Province)

M Lotfi; M Hekmatian; A.A Shabani; M.A Mokhtari

Volume 24, Issue 96 , September 2015, , Pages 73-84

https://doi.org/10.22071/gsj.2015.41679

Abstract
  Oras-kuh lead-zinc deposit is located at about 79 km north-east of Semnan city. This deposit is considered as stratabound and occurs in the upper part of the Triassic dolomitic limestone of the Elika formation. Oras-kuh structure includes a northeast - southwest trending normal anticline and follows ...  Read More

Comparision of the Mafic Igneous Rocks from the Ghelli Formation (Upper Ordovician) and the Gorgan Schists in the Eastern Alborz Zone

H Ghasemi; Z Kazemi; SH Salehian

Volume 24, Issue 96 , September 2015, , Pages 263-276

https://doi.org/10.22071/gsj.2015.41771

Abstract
  On the basis of stratigraphical studies, parental rocks of the Gorgan schists have same petrological features and fossil contents as the Ghelli formation in the eastern Alborz Zone and despite to the previous theories, these schists are not Precambrian in age. Also, the mafic igneous rocks of these two ...  Read More

Mineralogy and Geochemistry of Potentially Hazardous Trace Elements (PHTEs) in Coal Deposits of the Olang Region, Eastern Alborz

Z Solaymani; N Taghipour

Volume 24, Issue 95 , June 2015, , Pages 207-218

https://doi.org/10.22071/gsj.2015.42433

Abstract
  The Olang area is located in 70 km of northeast Shahroud. This area is situated in Gheshlagh Olang syncline, which is a member of the EasternAlborzCoalBasin. The optical microscopes and X-ray diffraction (XRD) analysis on coal and coal ash samples and also SEM-EDX results revealed kaolinite, quartz, ...  Read More

Lithostratigraphy and Biostratigraphy of the Middle Part of the Shemshak Group at GolbiniSection Based on Ammonites, NE Jajarm, Eastern Alborz

Z Kiadaliri; M.R Majidifard

Volume 24, Issue 94 , March 2015, , Pages 91-100

https://doi.org/10.22071/gsj.2015.42586

Abstract
  The Lower- Middle Jurassic strata are well developed in northeast of Jajarm (E Alborz). At the study section, the Shemshak Group has a maximum thickness of 585 m, consisting of grey silty sandstones and light- green siltstones with brown sandstones, subdivided into 3 formations ofAlasht, Shirindasht ...  Read More

Seismotectonic of the Eastern Alborz with a Point of View to the South of Damghan MW=5.7 Earthquake

M. Nemati; D. Hatzfeld; M. R. Gheitanchi; M. Talebian; N. Mirzaei; A. Sadidkhouy

Volume 22, Issue 86 , December 2012, , Pages 87-98

https://doi.org/10.22071/gsj.2012.54070

Abstract
  The Shahroud fault system plays important role in seismotectonic of the eastern Alborz. In this paper we have surveyed the seismicity of the middle-eastern Alborz and its southern area. At this investigation, the data of the Geological Survey of Iran local seismological networks, the seismological networks ...  Read More

Lithostratigraphy and Biostratigraphy of the Dalichai Formation at Talu (Northeast Damghan, Alborz) based on Ammonoids

K. Seyed Emami; N. Behfar; M. R. Majidifard; A. Behfar

Volume 21, Issue 82 , December 2011, , Pages 39-52

https://doi.org/10.22071/gsj.2011.54439

Abstract
  Middle Jurassic strata are well developed northeast of Damghan (E Alborz). At the study section the Dalichai Formation has a maximum thickness of 156 m, consisting of an alternation of bluish-grey limestones and marls, being subdivided into 4 members. The lower boundary with the siliciclastics of the ...  Read More

Biozonation of Geirud Formation in the Eastern Alborz (Damghan Region) based on the Brachiopoda

M. R. Kebria-ee

Volume 18, Issue 71 , January 2009, , Pages 19-30

https://doi.org/10.22071/gsj.2010.56983

Abstract
  Geirud Formation has a wide distribution in the Damghan region. The Formation Lithology is mostly composed of limestone, marly limestone, shale and quartizic sandstone and its thickness ranges from 10 - 200 meters. Brachiopoda of Geirud Formation in the southwest, north and northeast of Damghan region ...  Read More