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)
Temporal and spatial changes in the seismicity parameters along Doruneh fault system

Mohammad Hossein Tahriri; Hamid Saffari

Volume 33, Issue 3 , August 2023, , Pages 85-96


  The Doruneh fault system with more than 700 km length, after the main Zagros fault, is known as the largest fault in Iran. In this research, this fault system is divided into 3 main parts because the mechanisms of its different parts are different. The western part is reported to have a left lateral ...  Read More

Strain and vorticity analyses using chert nodules, a criterion for estimation of bulk shortening in the Pyun anticline, Zagros, Iran

Babak Samani

Volume 33, Issue 3 , August 2023, , Pages 97-110


  In this research, using deformed chert nodules in the calcareous units of Sarvak Formation in Pyun anticline, quantitative strain values in different parts of this anticline have been investigated. In a perpendicular fold axis survey, the anticline was divided into seven different areas. At least 40 ...  Read More

The origin of orthogonal vein network in Paleocene-Eocene flysch south of Birjand, eastern Iran

Mohammad Amir Alimi

Volume 33, Issue 3 , August 2023, , Pages 111-122


  This paper presents the results of a field study aiming to describe and to interpret origin of the vein network in the south of Birjand. Adjacent to Birjand ophiolite in eastern Iran, the Paleocene-Eocene flysch facies was deposited in the Birjand foreland area concomitant with the Alpine orogeny (Laramide). ...  Read More

Investigating the temporal multifractal pattern of the aftershock sequence of the 2017 Ezgeleh earthquake (Mw: 7.3)

Khatoun Pirdadi; Maryam Agh-Atabai; Attieh Eshaghi

Volume 33, Issue 2 , June 2023, , Pages 169-182


  The 2017 Ezgeleh earthquake (Mw: 7.3), which occurred in the northwest of the Zagros, was followed by many aftershocks. The histogram of the monthly rate of aftershocks shows that, except for the first few months, the aftershock sequence did not follow the Omori law. Therefore, it is necessary to use ...  Read More

Investigating the stress regime in the Gorgan-plain, using inversion of earthquake focal mechanism solutions

Fereshteh Jafari-Hajati; Maryam Agh-Atabai; Majid Nemati; Ali Biglari-Fadafan

Volume 33, Issue 1 , February 2023, , Pages 69-86


  In this research, to understand the present-day tectonic situation of Gorgan-plain in the east of the South Caspian basin, the tectonic stress regime of this area and its adjacent areas was estimated using the inversion of the data of the earthquake focal mechanisms. For this aim, in addition to analyzing ...  Read More

Orogenic and epeirogenic events in Iran

Mohammad R. Ghassemi; Ali Aghanabti; Abdollah Saeidi

Volume 33, Issue 1 , February 2023, , Pages 87-106


  Correlation of the orogenic and epeirogenic events in Iran with the events that have been identified in different parts of the world and in different tectonic environments, has caused some confusion in the Iranian geological literature. After a brief review of the nature of known orogenic processes in ...  Read More

Effect of deep and surface thrust faults on structural geometry of the Ghalajeh anticline, Lurestan, West Zagros

Reza Alipoor; Ali Jahangiri; Zahra Ghasemi

Volume 32, Issue 4 , December 2022, , Pages 221-234


  The Ghalajeh anticline with about 60 km length and NW-SE trend is located in Lurestan sub-zone and the Zagros fold and thrust belt. Geometry and kinematic of the folds of this zone are controlled by thrust faults and detachment levels. In this research, geometry and deformational style analysis of the ...  Read More

The Geometric, Kinematics and Deformation stage analysis of Fariman complex, NE Iran

Mojtaba Ershadinia; Farzin Ghaemi; Massoud Homam

Volume 32, Issue 4 , December 2022, , Pages 235-244


  The Fariman complex is located in the northeast of Iran and southeast of Mashhad, contains a variety of rocks from the Permian to the present era that have undergone several stages of deformation. In this paper, the structural geometry of faults and folds of the region is analyzed and based on it, the ...  Read More

Polyphase deformation in Bajgan metamorphic complex, southeastern Sanandaj-Sirjan termination zone

Mohammad Reza Sheikholeslami

Volume 32, Issue 4 , December 2022, , Pages 245-258


  Bajgan metamorphic complex is located at the southeastern termination of the Sanandaj-Sirjan zone in north of Makran. The metamorphic rocks, having igneous and sedimentary origins, are in tectonic contact with ophiolite assemblages and colored mélange. The rocks can be divided in four units based ...  Read More

Faghan fault system, constrain on the late Cenozoic kinematics of the Northern Lut Block, Central Iran

Mohammad Reza Mazinani; Ali Yassaghi; Reza Nozaem

Volume 32, Issue 3 , September 2022, , Pages 103-118


  The E-W trending Faghan fault system with >180 km in length located in the northern part of the Lut Block and south of the Dorouneh Fault in central Iran. The fault cut through basement rocks and all other younger units from Cambrian to Cenozoic. Kinematic and dynamic analyses of the Faghan fault ...  Read More

Paleostress Analysis in North Makran Ophiolite Mélange, Southeast of Iran

Azizollah Tajvar; mohammadmahdi Khatib; mohammadhosein Zarrinkoub

Volume 32, Issue 1 , March 2022, , Pages 1-14


  The north Makran ophiolite mélange, is located on the northern part of Makran accretionary wedge, southeast of Iran. In this study, we investigate geometry and kinematic properties of structural elements, and analyze the deformation style of the north Makran ophiolite mélange. Based on ...  Read More

Structure-thermal evolution and erosion pattern in Central Zagros

Esmail Farahzadi; Seyed Ahmad Alavi; Mohammad Reza Ghassemi; Shahram Sherkati

Volume 32, Issue 1 , March 2022, , Pages 57-72


  AbstractUnderstanding the history of uplift and folding in an area helps inferring the history of hydrocarbon genesis,‌migration ‌and‌ trapping and reducing exploratory drilling risks.‌Thermal model along with structural cross sections help understanding of this history and future plannings for ...  Read More

Analysis of deformation models based on sigmoidal vein arrays in the Bahlgerd shear zone

MohammadAmir Alimi

Volume 32, Issue 1 , March 2022, , Pages 89-102


  The Bahlgerd shear zone in the northern margin of Bagheran Mountain is separated Eocene flysch from the Cretaceous ophiolite sequence and Quaternary sediments by southern Birjand and Bahlgerd faults. In the deformation evaluation , sigmoidal array arrays located in sandstone units have been used as strain ...  Read More

Surface temperature pattern analysis of Gach and Siah Tagh salt domes using remote sensing methods, Zagros area

babak Samani; Sajad Zareie; Atefeh Ghanbari

Volume 32, Issue 1 , March 2022, , Pages 137-148


  Split-window algorithm is the effective method for determination of land surface temperature. The results of temperature pattern show that the Gach salt dome has a higher temperature than the Siah Tagh salt dome. From a structural point of veiw, the higher temperature of the Gach salt dome can be related ...  Read More

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


  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

Structural study of Strait of Hormuz by using of 3D seismic data

Nayyer Bayeste Hasti; Hosein Motamedi; Mahmoud Almasian

Volume 31, Issue 3 , December 2021, , Pages 73-82


  This study has focused on the result of seismic data. The first stage of basin formation is the opening of Neo- Tethys Sea which is Simultaneous with Dashtak, Kangan and Khaneh kat Formation and after that on the early to middle Triassic sediments an unconformity that can be named as an expansion of ...  Read More

Low temperature Thermochronometry and Structural constrains on evolution pattern of the Bozgoosh and Chehel-Nour Mountains intersection, NW Iran

Ebrahim Gholami; Asghar Ahmadi; mohammadmahdi Khatib; Saeed Madanipour

Volume 31, Issue 4 , December 2021, , Pages 123-138


  Located at the Arabia-Eurasia collision zone, the E-W trending Bozgoosh Mountain aligned perpendicularly to N-S trending Chehel-Nour Mountain in the northwest of the Iranian Plateau. There is not any thermochronometry study has been performed to determine the initial time of their uplift and exhumation. ...  Read More

Physical modeling of block rotation and the role of ductile sediments in the structural evolution of Kopeh Dagh and Zagros

Marzieh Rostami; Morteza Talebian; Abbas Bahroudi

Volume 31, Issue 3 , December 2021, , Pages 135-144


  Anticline axes in both orogenic belts of the Zagros and Kopeh Dagh are offset by NW-SE trending transvers faults. These faults are rotating anticlockwise due to their oblique orientation relative to maximum stress vector, causing shortening across the belt and elongation along the strike. The transverse ...  Read More

Strain analysis of the marbles from north Golpaygan metamorphic complex using Mohr circle

mohammadreza sheikholeslami; Shirin Elyasi; Mohamad Reza Ghasemi

Volume 31, Issue 2 , September 2021, , Pages 31-38


  The Mohr circle is a well-known method for two-dimensional strain analysis. Due to the formation of the boudins during two stages of the progressive deformation (D1 and D4) in cherty marbles, from north Golpaygan metamorphic complex, they have been analyzed for strain in two-dimension. This analysis ...  Read More

Tectono-stratigraphy investigation of the Handun Salt Diapir (Bandar-Abbas Hinterland) Using Exposed Halokinetic Sequences

Parvaneh Faridi; Payman Rezaee; AliReza Piryaei; Mehdi Masoodi

Volume 31, Issue 2 , September 2021, , Pages 39-52


  Halokinetic Sequences are used for analyzing and connecting endogenous and exogenous influencing factors on the sedimentary sequences around the diapir. The most important effect of the diapir movement is the creation of different sedimentary spaces in the result of uplift and subsidence. So, the Handun ...  Read More

Morphotectonics and Slip rate of the Khazar fault in Central Alborz, (North of Iran)

Hamid Nazari; Jean-Francois Ritz; Ara Avagyan

Volume 31, Issue 2 , September 2021, , Pages 101-110


  The Alborz mountain range accommodates some of the convergence between Central Iran and Eurasia. At present, the kinematics of the range involves a strain partitioning mechanism, and is associated with clockwise rotation of the South Caspian Basin. left-lateral strike-slip faulting is present along the ...  Read More

Structural Analysis Sirri Oil Field, Using Seismic And Well Logging Data

shima afkhami; Ahmad Alavi; Mohammad Reza Yamini; Mohamad Reza Ghasemi

Volume 31, Issue 1 , June 2021, , Pages 111-120


  The main purpose of this study is to investigate and structureral analyzes of Sirri oil field by subsurface geophysical data. In order to Seismic interpretation from 3 seismic lines (LL3, LL4 and LL5) picked up by Iranian Offshore Oil Company and SIC-1 well Data was used. In addition to interpreting ...  Read More

Seismotectonics of the East Alborz and Kopeh- Dagh zones using local seismic network data

M. Kouhpeyma; M. Talebian; L. Chen; A. Ghods; M. Ghorashi

Volume 31, Issue 1 , June 2021, , Pages 199-208


  The Kopeh Dagh and Binalud-Alla Dagh mountains are important structural elements located in the northeastern boundary of Arabia-Eurasia collision zone. Due to existence of large cities with a long history of civilization, there is a relatively rich body of data on historical seismicity in this area. ...  Read More

Geometry, Kinematic and dynamic analysis of Bamu fault zone in north of Shiraz, Zagros Folded Belt Zone

Ali Bandegani; Ali Yassaghi; Mohsen Eliassi

Volume 30, Issue 118 , January 2021, , Pages 215-224


  In this paper, the structural evolution of Bamu fault zone located in the Zagros folded belt zone is presented as an example of northeast-trending fault zone in the Zagros, using the kinematic and dynamic analysis of accompanied structures. Based on structural and paleostress analyzes two phases of shortening ...  Read More

Structural analysis of the South Nataz Region, evidence for interaction of the dextral transpression on earlier thrust faults in central Iran

Firouzeh Shavvakhi; Saeed Madanipour; Ebrahim Rastad

Volume 30, Issue 118 , January 2021, , Pages 255-268


  South Natanz Area is structurally located in the western part of the Central Iranian structural zone and central part of the Orumieh-Dokhtar magmatic belt at southwestern termination of the Qom-Zefreh Fault. Our structural data represents older generation of E-W to NW-SE thrust faults as Fasakhod Fault ...  Read More