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)
Tectonics
Estimated amount of shortening in Zagros crushed zone and crushed area based on transverse cutting equilibrium

Rojan Hemati; Manouchehr Ghorashi; Ali Solgi; Abdollah Saidi

Volume 31, Issue 3 , December 2021, , Pages 9-16

https://doi.org/10.22071/gsj.2019.97421.1249

Abstract
  The Zagros suture zone is one of Key regions. Continent - Continent collision between Arabian plate and Iranian Block. This region is coincided by High Zagros and Zagros Simply Fold Zones in Western side and in other side is the Sanandaj- Sirjan Zone. The region of this research in situated in Northern ...  Read More

Tectonics
Accommodation of Shortening in the Eastern-Central Alborz Range (North of Damghan)

Zeynab Taslimi; Abdollah Saidi; Mehran Arian; A. Solgi; Manouchehr Ghoreshi

Volume 29, Issue 116 , August 2020, , Pages 93-98

https://doi.org/10.22071/gsj.2017.108499.1331

Abstract
  The Alborz Mountains has been separated the subsiding Caspian Basin from the foreland basin of Central Iran. This mountain range from east to northwest, has changed greatly in structural trend formed spirally. Two orogenic phases, Cimmerian and Alpine events caused more changing in sedimentary basin ...  Read More

Tectonics
Recognition of Cenozoic stress field changes using brittle tectonic analysis in the Zagros simply folded belt (Shiraz Area)

Tahmoores Yousefi; Kouros Yazdjerdi; Manouchehr Ghorashi; Alireza Shahidi

Volume 29, Issue 115 , June 2020, , Pages 229-240

https://doi.org/10.22071/gsj.2018.133943.1483

Abstract
  The current form of the folded Zagros is the result of the oblique collision the Arabian and Iranian plates in Late Cenozoic. In this study, Cenozoic stress field changes in Zagros Simply folded belt and structural evolution after collision in Shiraz Area have been evaluated. The geological formations ...  Read More

Tectonics
Paleostress Reconstruction of Mesozoic deposits In Interior Fars Area( E-SE of Shiraz)

Tahmoores Yousefi; Kooros Yazdjerdi; 2Manouchehr Ghorash; Alireza Shahidi

Volume 28, Issue 111 , May 2019, , Pages 53-64

https://doi.org/10.22071/gsj.2017.97004.1245

Abstract
  Abstract: The brittle tectonic history expresses different tectonic events in the Zagros Simply Folded Belt. Consequence of Mesozoic extension, rifting and the shortening derived from the Cenozoic Eurasia – Arabia collision. In order to reconstruction the ancient tensions in the Mesozoic deposits ...  Read More

Geomorphology and faulting mechanism of 1-12 December 2017, Hojedk earthquakes

M. Talebian; M. Ghorashi; E. Kosari

Volume 28, Issue 110 , December 2018, , Pages 247-254

https://doi.org/10.22071/gsj.2019.84475

Abstract
  On 1-12 December 2017 three earthquakes (Mw 5.9 -6.1) shake Hojedk region in Kerman province.  We used satellite images, radar interferometry and field investigation to examine the sourceprocesses of these earthquakes in south–central Iran. The epicenter of first two events located near northern ...  Read More

Tectonics
Geomorphic Signatures of Active tectonics in the Kashafrood drainage basin, NE Iran

Mohamad Reza Sajadian; Manouchehr Ghorashi; Elahe Javadi Mosavi; Mohsen Pourkermani; Mehran Arian

Volume 28, Issue 110 , December 2018, , Pages 299-306

Abstract
  Geomorphic indices of active tectonics are useful tools to analyze the influence of active tectonics. These indices have the advantage of being calculate from ArcGIS and remote sensing packages over large area as a reconnaissance tool to identify geomorphic anomalies possibly related to active tectonics. ...  Read More

Computing maximum seismic acceleration of North Tabriz Fault using earthquake simulation based on finite fault source

H. Amiranlou; M. Pourkermani; R. Dabiri; M. Qoreshi; S. Bouzari

Volume 27, Issue 105 , December 2017, , Pages 193-198

https://doi.org/10.22071/gsj.2017.53948

Abstract
  The occurrence of historical and instrumental earthquakes near the North Tabriz Fault in NW Iran is an evidence for seismic activity of this fault, which recorded historical earthquakes with magnitudes greater than 7. In this study, existing experimental relations, historical seismicity, and the fault ...  Read More

Investigation of geomorphological changes and sediment characteristics of Napag mud volcano, Makran, Iran

K. Nezhadafzali; R. Lak; M. Ghoreshi

Volume 26, Issue 104 , September 2017, , Pages 261-266

https://doi.org/10.22071/gsj.2017.50279

Abstract
  Mud volcano is a natural and spectacular phenomenon that usually appear in form of a dome but some are found as a basin. Mud volcanoes comprise a mixture of water, gas and mud. They are found in most parts of the world, particularly in the Alps and Himalayas belts.  In Iran, most of the mud volcanoes ...  Read More

Separation of paleostress phases using fault slip data in the Khalkhal region

R Sadeghi; A Saidi; M Arian; M Ghorashii

Volume 26, Issue 102 , March 2017, , Pages 297-302

https://doi.org/10.22071/gsj.2017.44066

Abstract
  In this study, separation of paleostress phases in the Khalkhal region has been doneusing paleostress analysis based on heterogeneous fault slip data and related slip lineations.The data have been measured and collected from the Jurassic, Cretaceous and Eocene units.To determine the sense of shear or ...  Read More

Identifying the Jozak-Ghetlish fault system in western Kopet-Dagh and its tectonic implications

Z Tashakkori; M Ghorashi; M Pourkermani

Volume 25, Issue 99 , June 2016, , Pages 295-304

https://doi.org/10.22071/gsj.2016.40945

Abstract
  The Kopet Dagh zone has been an area interest for geologists due to its sedimentary and structural similarities to the Zagros zone. In this study, the Jozek-Ghetlish main fault is introduced using the results of field studies, remote sensing, stratigraphic changes and seismic activities. The studies ...  Read More

Determination, geochemical investigation and sediment provenance in the Makran coasts

K Nezhadafzali; S Shayn; R Lak; M Yamani; M Ghorashi

Volume 25, Issue 98 , March 2016, , Pages 249-254

https://doi.org/10.22071/gsj.2016.41224

Abstract
  Mud volcano is a natural and attractive phenomenonwhich is generally found as a dome-like feature and basin-shaped in some cases. Mud volcanoes comprise mixtures of water, mud and gas. They are found in most parts of the world particularly in the Alps and Himalaya belts. In Iran, most of the mud volcanoes ...  Read More

Geology and structural pattern of Anarak-Talmessi sedimentary basin

M Shayanfar; M Ghorashi; S.J Ahmadi; A Saeedi; A.R Shahidi

Volume 25, Issue 98 , March 2016, , Pages 315-320

https://doi.org/10.22071/gsj.2016.41231

Abstract
  The existence of a sedimentary basin with a large thickness of Neogene sediments(Lower Red Formation) in the Anarak-Talmessi region of central Iran with a basement of Precambrian metamorphic rocks, high rate of erosion processes, and more importantly its safety necessity led us to define the structural ...  Read More

Structural Maturity of Active Faults and Evolutionionary Pattern of Seismic Activity in Eastern Iran

N Saboor; M.R Ghassemi; M Eskandari; A Nazari.F; M Ghorashi; F Seenaian

Volume 24, Issue 95 , June 2015, , Pages 57-66

https://doi.org/10.22071/gsj.2015.41850

Abstract
  Depending on their structural maturity, seismogenic faults, , may rupture in one segment or as multiple segments; they also may show different slips on their segments. Mature faults break in long ruptures with small slip, while immature faults rupture as short segments but are more energetic. On the ...  Read More

Morphotectonics Features of Alluvial Fans Associated with Active Tectonics (Shotori Mountains, East of Tabas- Central Iran)

M Nazemi; M Qurashi; M.R Ghassemi; M Arian

Volume 24, Issue 95 , June 2015, , Pages 91-100

https://doi.org/10.22071/gsj.2015.41996

Abstract
  Geomorphic characteristics of alluvial fans on the sides of the ShotoriMountains in east of Tabas represent two different groups . The first group is older and is more dominant with their heads near the ShotoriMountains' hillside and their toe spreading to the central parts of the plain. These alluvial ...  Read More

Geomorphic Signatures of Active Tectonics in the Jarahi-Hendijan Drainage Basin (Marun-Zohreh Rivers) in South-West Iran

J Ehsani; M Arian; M Ghorashi

Volume 24, Issue 95 , June 2015, , Pages 211-219

https://doi.org/10.22071/gsj.2015.42047

Abstract
  This paper aims at evaluating relative active tectonics in the Jarahi-Hendijan drainage basin based on geomorphic indices. Indices used include: stream length-gradient index (SL), drainage basin asymmetry (Af), hypsometric integral (Hi), ratio of valley-floor width to valley height (Vf), index of drainage ...  Read More

Geomorphic Signatures of Active Tectonics in the Chalus Drainage Basin in Alborz, Iran

M Haj Manuchehri; M Arian; M Ghorashi; A Solgi; A Sorbi

Volume 24, Issue 95 , June 2015, , Pages 273-280

https://doi.org/10.22071/gsj.2015.42072

Abstract
  Geomorphic indices of active tectonics are useful tools to analyze the influence of active tectonics. These indices have the advantage of being calculated from ArcGIS and Remote Sensing software packages over large areas as a reconnaissance tool to identify possible geomorphic anomalies related to active ...  Read More

Neotectonic Analysis of Mosha-North Tehran Fault Zone, Based on Morphotectonic Features, Central Alborz, Northern Iran

N Bagha; M Ghorashi; M Arian; M Pourkermani; A Solgi

Volume 24, Issue 1393 , March 2015, , Pages 41-52

https://doi.org/10.22071/gsj.2015.43329

Abstract
  Structural development, caused by active tectonics leads to deformation of morphology features. The Mosha-North Tehran fault zone, located in south edge of the Central Alborz consists of significant tectonic structures. Hence, study on morphotectonic signs is a proper method for evaluation of relative ...  Read More

The Movement Potential Evaluation of the Mosha Fault (from the West of Firoozkuh to the Shahrestanak)

S Bahiraee; M Arian; M Qorashi; A Solgi

Volume 24, Issue 1393 , March 2015, , Pages 123-126

https://doi.org/10.22071/gsj.2015.43387

Abstract
  The Mosha fault is the most important fault structures in the south of Central Alborz. According to the activity of this fault, confirmation of the morphological evidences, and large historical earthquakes occurred by its activity, also proximity to Tehran metropolitan, the study of this area is very ...  Read More

Determination of Porphyry Copper Deposit Locations Using Photo Lineament Factor in Northern Parts of the Dehaj-Sardoiyeh Belt

H Alizadeh; M Aryan; M Lotfi; M Ghorashi; M Ghorbani

Volume 24, Issue 94 , March 2015, , Pages 247-252

https://doi.org/10.22071/gsj.2015.42935

Abstract
  The Dehaj-Sardoiyeh Belt, which is a part of the Urmia-Dokhtar Volcanic-Plutonic Zone, consists of several economic porphyry copper deposits. This area is located on the right lateral shear zone surrounded by the Rafsanjan fault in the north and the Shahr-e Babak fault in the south. In this research, ...  Read More

Morphotectonic Markers and Active Faulting Research In Hashtgerd New Town, West Of Karaj

S Alimardan; Sh Solaymani Azad; M Ghorashi; M.R Ghorashi; B Oveisi; A Hatami

Volume 24, Issue 1393 , March 2015, , Pages 227-234

https://doi.org/10.22071/gsj.2015.43417

Abstract
  Due to urban population growth in recent decades and the need for decentralization of cities with limited facilities and increasing marginalization in the larger cities, construction of new cities around large towns has been considered by decision makers to develop a plan to create new cities around ...  Read More

The Study of Uplift Movements of Jorjafk Fault by North Front Davaran Mountains Rivers

A Shafiei Bafti; M Pourkermani; M Arian; M ghorashi

Volume 23, Issue 92 , September 2014, , Pages 115-122

https://doi.org/10.22071/gsj.2014.43690

Abstract
  One of the most important tools of recognition for uplifting Movements in an area is study of rivers. The Davaran Mountain Range, which situated between Zarand and Rafsanjan cities, is limited by the Jorjafk fault in the north face. This fault is 160 km long and divided into two northern and southern ...  Read More

Late Pliestocene-Holocene Paleoseismicity, Temporal Clustering, & Probabilities of Future Large (M>7) Earthquake on the Dehshir Fault, Central Iran

M Foroutan; H Nazari; B Meyer; M Sébrier; M Fattahi; K Le Dortz; M Ghorashi; Kh Hessami; M. R Ghassemi; M Talebian

Volume 23, Issue 90 , March 2014, , Pages 75-90

https://doi.org/10.22071/gsj.2014.43958

Abstract
  The Dehshir fault system (DFS) including six fault segments forms the western border of NS-striking active dextral strike-slip fault cutting the Sanandaj-Sirjan, Uromieh-Dokhtar magmatic arc, and Central Iran. This active fault system right-laterally offset Eocene volcanic rocks and Quaternary alluvial ...  Read More

The Effect of Upper Red Formation Salt Unit on Structures of South Central Alborz "An Analogue Modelling Approach"

M Royatvand; A Bahroudi; M. Qoreshi; M. R. Ghasemi; S. A. Aghahosseini

Volume 22, Issue 88 , December 2013, , Pages 87-98

https://doi.org/10.22071/gsj.2017.53676

Abstract
  The Oligocene salt in the Garmsar and Eyvankey plateau, south–central Alborz, has extruded on the quaternary sediments and formed a salt glacier. This open-toe salt glacier is about 24×17 km that is unique continental salt glacier in the world, dimensionally. Also, this ductile substrate ...  Read More

Determination of Clustering Pattern of Paleoearthquakes Occurrences on the Golbaf Fault, SE Kerman

M. Basiri; H. Nazari; M. Foroutan; S. Solaymani Azad; M. A. Shokri; M. Talebian; M. Ghorashi; M. J. Bolourchi; A. Rashidi

Volume 22, Issue 87 , December 2013, , Pages 171-180

https://doi.org/10.22071/gsj.2013.53848

Abstract
  The Golbaf area in Kerman province (SE Iran) has experienced five earthquake of Mw 5.4-7.1 between 1981 and 1998. Occurrences of these earthquakes in seventeen years time interval indicate that occurrences of earthquakes on the Golbaf (Gowk) fault system have a clustering model. In this study we use ...  Read More

New Paleoseismological Results within the Overlap Zone of NW and SE Segments of North Tabriz Fault (NW Iran)

A. Fathian Baneh; S. Solaymani Azad; H. Nazari; M. Ghorashi; M. Talebian

Volume 22, Issue 86 , December 2012, , Pages 3-12

https://doi.org/10.22071/gsj.2012.54048

Abstract
  Tabriz city, the most highly population city of NW Iran, is located close to the North Tabriz Fault (NTF). This 150 km right-lateral strike-slip fault consists of two major fault segments arranged in right-stepping pattern. A pull-apart basin has been formed within the overlap zone of these fault segments ...  Read More