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 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
Structural Analysis of the Kuh-Banan Fault System in the Tikdar-Goorchoieh Region, North of Kerman, Central Iran

T Naderi; A ShafieiBafti; M Shahpasand-zadeh

Volume 24, Issue 95 , June 2015, Pages 3-12

http://dx.doi.org/10.22071/gsj.2015.41778

Abstract
  Structural data from the Kuh-Banan oblique-slip fault system show that this active fault controls the structural architecture of the                Tikdar-Goorchoieh area, north of Kerman. The Kuh Banan fault system is consisted ...  Read More

Original Research Paper
Active Tectonics of Great Karoun River Basin

A Khodabakhshnezhad; M Pourkermani; M Arian; A.A Matkan; A Charchi

Volume 24, Issue 95 , June 2015, Pages 13-28

http://dx.doi.org/10.22071/gsj.2015.41779

Abstract
  Geomorphic indices of active tectonics are useful tools to analyze the influence of active tectonics in an area. These indices have the advantage of being calculated using ArcGIS and RS (Remote Sensing) packages over large areas as a reconnaissance tool to identify geomorphic anomalies possibly related ...  Read More

Original Research Paper
Geometry and Recent Kinematics of the North Qazvin Fault: Morphotectonics Approach

B Taherkhani; H Nazari; M Pourkermani; M Arian

Volume 24, Issue 95 , June 2015, Pages 29-38

http://dx.doi.org/10.22071/gsj.2015.41781

Abstract
  The E-W trending North Qazvin Fault is situated in north & northeast of Qazvin city in south-central Alborz. Across the fault, Karaj formation (Eocene) is thrusted over Hezardarreh Formation (A) and the alluvial B Formation. It could be the source for the 1119 AD earthquake with an estimated magnitude ...  Read More

Original Research Paper
Extension Analysis in Shemshak Sedimentary Basin (Balladeh Valley, Central Alborz)

M Mirzaei Souzani; A Shahidi; R Ramezani; F Alizadeh Sevari

Volume 24, Issue 95 , June 2015, Pages 39-48

http://dx.doi.org/10.22071/gsj.2015.41783

Abstract
  In order to survey the extensional forces dominated in central Alborz since Late Triassic (Norian) to Middle Jurassic (Early-Bajocian), synsedimentary normal and strike-slip fault systems in Balladeh valley which contains significant distribution of Shemshak Group have been studied. Analysis of σ3 ...  Read More

Original Research Paper
Crustal Structure in the Eastern Part of the Alborz Mountains (Iran) from Converted P wave Phases

N Afsari; F Taghizadeh-Farahmand; M.R Ghassemi

Volume 24, Issue 95 , June 2015, Pages 49-56

http://dx.doi.org/10.22071/gsj.2015.41849

Abstract
  The AlborzMountains are part of the Alpine-Himalayan orogenic belt, situated to the south of the Caspian Sea and north of the Central Iran. . The region is undergoing extensive crustal deformation and shortening between the north-central Iran and the rigid SouthCaspianBasin crust. In this study, we used ...  Read More

Original Research Paper
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

http://dx.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

Original Research Paper
Estimating Seismic Capability and Magnitudes of Prehistoric Earthquakes from Landslide Data: Case Study in Noor Valley (Central Alborz)

Z Asadi; M Zare

Volume 24, Issue 95 , June 2015, Pages 67-78

http://dx.doi.org/10.22071/gsj.2015.41851

Abstract
  Understanding paleoseismic characteristics and seismic capability of faults is very important for evaluation of seismic risk in any area. Using geomorphic markers as indirect method in paleoseismic studies is an appropriate and practical method in understanding the tectonic activity the mountainous areas. ...  Read More

Original Research Paper
Fold Style in the Fars Paleo-High, SE Zagros Fold-Thrust Belt

M Najafi; A Yassaghi; A Bahroudi; SH Sherkati; J Vergés

Volume 24, Issue 95 , June 2015, Pages 79-90

http://dx.doi.org/10.22071/gsj.2015.41878

Abstract
  The long-lived Fars paleo-high, located in SE Zagros Mountains is a prolific hydrocarbon province as it contains 15% of the world’s proven gas reserves. Subsurface data sets acquired during the recent hydrocarbon exploration in the region indicated fold style variation and structural complexity ...  Read More

Original Research Paper
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

http://dx.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

Original Research Paper
Dadenjan Salt Diapir: Evidence for Pre-Orogenic Activity, Rising Mechanism and Subsequent Influences on the Geometrical Adjustments of the Adjacent Structures (SW Shiraz, Iran)

J Hassanpour; S.A Alavi; S Jahani; M.R Ghassemi

Volume 24, Issue 95 , June 2015, Pages 101-114

http://dx.doi.org/10.22071/gsj.2015.41997

Abstract
  Located in the Fars region of Simply Folded Belt of the Zagros orogen, the Dadenjan salt diapir is exposed in the core, with a tendency toward the southwestern flank of the salt-cored Dadenjan anticline. The diapir is also currently situated within a transtension zone between overlapping segments of ...  Read More

Original Research Paper
A ML Scale for Local Earthquakes Magnitude in the Eastern-Middle Alborz

M Nemati; A.R Ghods; M.R Ghassemi

Volume 24, Issue 95 , June 2015, Pages 115-122

http://dx.doi.org/10.22071/gsj.2015.41998

Abstract
  Due to absence of an appropriate scale for estimation of ML for the earthquakes in eastern Alborz Range, we calculated 1113 synthetic Wood-Anderson peak amplitudes from waveforms of 215 earthquakes recorded by 23 stations at local hypocentral distances. The events were recorded by two local temporary ...  Read More

Original Research Paper
Evidences for Development of a Pull-Apart Basin in the Rostam-Abad Region, Gilan Province

R Razavi Pash; M.R Ghassemi; H Safari

Volume 24, Issue 95 , June 2015, Pages 123-132

http://dx.doi.org/10.22071/gsj.2015.41999

Abstract
  The study area is located in western Alborz range, and is part of the Lahijan sinistral strike-slip fault system. This area is observed as a depressed basin on the digital elevation model. This research uses field studies, remote sensing techniques and statistical methods to investigate and analyze geometry ...  Read More

Original Research Paper
Geomorphic Assessment of Lateral Growth of Active Folds in the Fars Arc, Zagros Fold-Thrust Belt, Iran (Case Study: Herang and Kuh-e-Namaki Anticlines)

A Faghih; A Jamshidi; A Nohegar

Volume 24, Issue 95 , June 2015, Pages 133-142

http://dx.doi.org/10.22071/gsj.2015.42000

Abstract
  The existence of lateral propagation of folds above blind reverse faults is an important hypothesis and is generally accepted. In this research, the growth pattern of active folds (e.g., Herang and Kuh-e-Namaki anticlines) in the Fars Arc located in the Zagros Fold-Thrust Belt is investigated from tectonic ...  Read More

Original Research Paper
Determination of Aftershocks Attenuation Behavior of Moderate to Large Earthquakes in Iranian Plateau

F Kamranzad; L Moussavi; M Mojarab; H Memarian

Volume 24, Issue 95 , June 2015, Pages 143-154

http://dx.doi.org/10.22071/gsj.2015.42001

Abstract
  In this study,attenuation behavior of moderate to large earthquake aftershock sequences occurred in Iranian plateauhas been investigated according to the empirical Omori Law. Due to proper recordings of instrumental earthquakes from 1990 to 2012, important earthquakes of this period were selected. After ...  Read More

Original Research Paper
a-bValues for the Ahar-Varzaghan Earthquake, Northwestern Iran

A Alizadeh; R Safari

Volume 24, Issue 95 , June 2015, Pages 155-160

http://dx.doi.org/10.22071/gsj.2015.42002

Abstract
  Seismic values are the main parameters in evaluating the neotectonic activity of a region. In August 11, 2011, two Mb=6.4 and Mb=6.3 earthquakes occurred in Ahar-Varzaghan region within 11 minutes. Seismotectonic investigations imply that the faults generating the events are the young faults of the regions. ...  Read More

Original Research Paper
Relative Timing of Mylonitization Event in North Golpayegan Metamorphic Rocks

E Moosavi; M Mohajjel; N Rashidnejad-Omran

Volume 24, Issue 95 , June 2015, Pages 161-168

http://dx.doi.org/10.22071/gsj.2015.42043

Abstract
  Extensive mylonitic fabrics are observed in the north Golpayegan metamorphic rocks in the Sanandaj-Sirjan zone. Earlier researchers did not present any evidence for the relative timing of mylonitic fabrics development. In this paper, the relation between folding and metamorphism events and formation ...  Read More

Original Research Paper
Detachment Folding in Mianeh-Mahneshan Area: Interaction Between Sedimentation in the Upper Red Formation Basin and Shortening

M Baghernejhad; M.R Ghassemi; B Oveisi

Volume 24, Issue 95 , June 2015, Pages 169-180

http://dx.doi.org/10.22071/gsj.2015.42044

Abstract
  There is a close relationship between resistance to slip along decollement surfaces and presence of deep and shallow decollement levels in thin-skinned fold and thrust wedges. Decollement units in lower (Upper Red Formation) stratigraphic levels in Mianeh-Mahneshan fold belt have an effective role onthe ...  Read More

Original Research Paper
Structural Analysis of the Southern Segments of the Karehbas Transverse Fault Zone in the South of Firuzabad, Zagros Fold-Thrust Belt

N Sahabi-Fard; A Yassaghi; M.G Hassan-Goodarzi

Volume 24, Issue 95 , June 2015, Pages 181-190

http://dx.doi.org/10.22071/gsj.2015.42045

Abstract
  Zagros fold-thrust belt has been crossed by different transverse faults with NNW-SSE trend and dextral mechanism. These faults often show en-echelon geometries on the surface because of presence of detachment layers at base and within the cover sequence. The Karehbas fault is one these faults located ...  Read More

Original Research Paper
Geometric Analysis of Tukak and Kamarun Anticlines in Izeh Zone, Zagros

F Baratpour; M Arian; A S

Volume 24, Issue 95 , June 2015, Pages 191-200

http://dx.doi.org/10.22071/gsj.2015.42046

Abstract
  Situated 15 km NW of the Izeh city, Tukak and Kamarun anticlines are located in northwest of the Izeh zone in the Zagros fold-and-thrust belt. The Tukak anticline measures about 17 km length by 3.3 km width on the Asmari formation outcrop, while the Kamarun anticline shows a maximum length and width ...  Read More

Original Research Paper
Fold Style Variations In Cover Sediments above Oblique Basement Faults, Qitoleh Anticline As a Case Study, North-West Zagros

S Rezaei; A Yassaghi

Volume 24, Issue 95 , June 2015, Pages 201-210

http://dx.doi.org/10.22071/gsj.2015.41852

Abstract
  The aspect ratio of folds is among the most important parameters indicating geometrical features of folds. Based on the aspect ratio, folds are categorized into two groups of buckle and forced folds. The NW-SE trending Qitoleh anticline, which is located in NW of the Lurestan structural subzone and in ...  Read More

Original Research Paper
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

http://dx.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

Original Research Paper
Analysis of Neo-Tectonic Stress State of Zagros Orogeny and Separation of Stress Regimes by Earthquake Data

B Zamani G; N Kiyanizadeh; H Parhizgari

Volume 24, Issue 95 , June 2015, Pages 219-230

http://dx.doi.org/10.22071/gsj.2015.42065

Abstract
  In this research, the stress state in the Zagros fold and thrust belt is studied using inversion method analysis of focal mechanisms of earthquakes related to active faults of this region. Geological, structural and seismic differences throughout the Zagros fold and thrust belt led us to divide it into ...  Read More

Original Research Paper
Folding Style and its Role in Location of Ore in Anjireh-Vejin Mines, Tiran, West of Isfahan

A Nakini; M Mohajjel; A Yarmohammadi

Volume 24, Issue 95 , June 2015, Pages 231-243

http://dx.doi.org/10.22071/gsj.2015.42066

Abstract
  Anjireh-Vejin Mines of Tiran are located 60 km west of Isfahan. Exposed rocks in these mines are Early Cretaceous (Early Baremian-Albian) in age. These rock units are exposed in NW-SE trending anticlines plunging shallowly to SE in three Vejin Paein, Vejin Bala and Anjireh-Chekab Mines. Folding in all ...  Read More

Original Research Paper
Tectonostratigraphic Units of Southeastern Part of the Sanandaj-Sirjan Zone

M.R Sheikholeslami

Volume 24, Issue 95 , June 2015, Pages 243-253

http://dx.doi.org/10.22071/gsj.2015.42068

Abstract
  Different characteristics of the rock units and their stratigraphic relationships, as well as magmatic and metamorphic activities in the southern part of the Sanandaj-Sirjan Zone resulted in identification of different tectono-stratigraphic units based on their tectonic environments reflecting the opening ...  Read More

Original Research Paper
Structural and Aeromagnetic Evidence for Formation of the Shusf Hidden Fault in East Neh-Esmaeilabad Restraining Stepover (Eastern Iran)

M.A Alimi; M.M Khatib; KH Hessami Azar; M.R Hayhat

Volume 24, Issue 95 , June 2015, Pages 253-265

http://dx.doi.org/10.22071/gsj.2015.42069

Abstract
  An array of en-echelon strike-slip faults in eastern Iran results in the formation of releasing and restraining bends or stepovers, within which some faults are hidden in the extensional and contractional parts of the structures. This is investigated in the East Neh-Esmaeilabad left-stepping restraining ...  Read More

Original Research Paper
Investigation on Seismicity of Recent Earth Movements in Sanandaj- Sirjan Structural Zone, by using RS & GIS Techniques

H Safari; M.R Ghassemi; M Bahrami

Volume 24, Issue 95 , June 2015, Pages 265-272

http://dx.doi.org/10.22071/gsj.2015.42071

Abstract
  This opinion exist that basement of the Sanandaj-Sirjan Zone was cratonized during Cimmerian and Laramide Orogenic phases and so, therefore it is considered as an aseismic (or low-sesimicity) zone. The Shahreza area in the central part of the zone is selected as a case study area for investigation on ...  Read More

Original Research Paper
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

http://dx.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

Original Research Paper
Geological and Seismic Study of the August 27, 2010 Touchahi Earthquake MN=5.9 (South of Damghan City)

M.A Shokri; M Foroutan; M Nemati; M.J Bolourchi; SH Javadipour; B Oveisi

Volume 24, Issue 95 , June 2015, Pages 281-292

http://dx.doi.org/10.22071/gsj.2015.42073

Abstract
  The Touchahi earthquake of Aug 27, 2010 (MN 5.9; IRSC- Mw 5.7; USGS) occurred at 19:23:49 UTC (23:53:49 local time on 5 Shahrivar 1389) in south of Damghan city. No foreshock were reported before this earthquake whereas 85 aftershocks (MN 1-5) were registered by IRSC until 1 month after the mainshock. ...  Read More

Original Research Paper
Analysis Elements of Fold Style in the Karbasi Anticline, Interior Fars Region, Zagros

Z Maleki; M Arian; A Solgi; M.A Ganjavian

Volume 24, Issue 95 , June 2015, Pages 293-302

http://dx.doi.org/10.22071/gsj.2015.42074

Abstract
  The Karbasi anticline is located to the west-northwest of the Jahrom town, and 40 km to the northwest of Aghar gas anticline in interior Fars region. The anticline has an asymmetric structure, and some faults with large strike separations are observed in it. Because of the importance of comparison between ...  Read More

Original Research Paper
Structural Analysis of Remnants of Neotethyan Marginal Basin Along the North Tabriz Fault

F Mesbahi; M Mohajjel; M Moazzen; L Namaki

Volume 24, Issue 95 , June 2015, Pages 303-312

http://dx.doi.org/10.22071/gsj.2015.42082

Abstract
  In the east of Tabriz city, south of Eskandar village, Upper Cretaceous rock units are exposed. The structures in these rock units include meso-scale folds inclined towards NNE, and a thrust system which has transported Upper Cretaceous units in three thrust sheets towards NW. This thrust system has ...  Read More

Original Research Paper
The Movement Potential Evaluation of the North Tabriz Fault

A Nouri Mokhoori; B Zamani; M Moayyed

Volume 24, Issue 95 , June 2015, Pages 313-322

http://dx.doi.org/10.22071/gsj.2015.42083

Abstract
  Tabriz Fault is one of the major faults of Iran that is situated in the northwest of Iran and central part of the Iranian Azerbaijan. The fault has a well-known paleoseismological history, and being situated adjacent to the Tabriz city with two millions ofinhabitants makes ita big seismic hazard. In ...  Read More

Original Research Paper
Effect of Structural Controllers on Ore Mineral Deposits of Cheshmeh Khouri Area (Northwest of Birjand)

KH Kavyani Sadr; M.M Khatib; M.H Zarrinkoub

Volume 24, Issue 95 , June 2015, Pages 323-342

http://dx.doi.org/10.22071/gsj.2015.42086

Abstract
  Cheshmeh Khouri is an area which mainly comprises a zone of parallel, en-echelon faults along which metallic and non-metallic mineralization is observed. Structural controllers are important factors in the formation of the structural elements of the area such as dykes, faults, joints, folds, and particularly ...  Read More

Original Research Paper
Geotechnical Investigation and Seismic Zonation of Alluvial Deposits in Western Tehran

U Alladin; M Talebian; M Arian; M.M Ahmadi

Volume 24, Issue 95 , June 2015, Pages 333-343

http://dx.doi.org/10.22071/gsj.2015.42087

Abstract
  Earthquake is an undeniable phenomenon that can cause financial and social damage if occur in populated areas.  Vulnerability of buildings is not just function of magnitude and distance from the epicenter but also depends on physical properties of soil. In this study we evaluate physical properties ...  Read More

Original Research Paper
Assessment of Source Parameters of Qeshm 2005 Earthquake Based on InSAR Observation Inversion Using Genetic Algorithm

M Amighpey; B Vosooghi; M Motagh

Volume 24, Issue 95 , June 2015, Pages 343-350

http://dx.doi.org/10.22071/gsj.2015.42124

Abstract
  An earthquake with the magnitude of 5.9 ML shocked the Qeshm island located in the Persian Gulf on 27 November, 2005 at 13:53:22 local time. The earthquake occurred due to the reactivation of a NE-SW fault with a major reverse mechanism accompanied by a minor strike-slip component. Another earthquake ...  Read More

Original Research Paper
Compilation of Seismic Attributes and Artificial Neural Networks in Identifying Fault Systems in the Hormuz Strait Area

M.S Mirkamali; H.R Ramazi; M.R Bakhtiari; H Ramesh

Volume 24, Issue 95 , June 2015, Pages 351-358

http://dx.doi.org/10.22071/gsj.2015.42125

Abstract
  This study has focused on identifying fault systems in the HormuzStrait area using compilation of seismic attributes and artificial neural networks. Faults and fractures play an important role in creating areas of high porosity and permeability. In addition, they cut off the cap and reservoir rocks along ...  Read More

Original Research Paper
Moment Tensor Solution of the Central - Western Alborz (Iran) Earthquakes Based on Regional Data

S Ansari; F Yaminifard; M Tatar

Volume 24, Issue 95 , June 2015, Pages 359-368

http://dx.doi.org/10.22071/gsj.2015.42126

Abstract
  In this study, 23 focal mechanisms were calculated by moment tensor inversion of small regionalـlocal earthquakes in the Western Alborz and surrounding areas using wave-form inversion method. Calculated reverse-fault focal mechanisms around the Khazar and Alborz Faults in the Central Alborz, considering ...  Read More