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)
Paleoenvironmental reconstruction of Miocene clastic sedimentary rocks at Kuh-e Asaki and Horgan sections, Neyriz region, Zagros basin

P Gholami Zadeh; M.H Adabi; M Hosseini-Barzi; A Sadeghi; M.R Ghassemi

Volume 26, Issue 101 , December 2017, , Pages 23-34


  The Miocene sediments in Neyriz region crop out  in Zagros Crushed Zone, between Zagros Main Fault and Zagros Ophiolite Zone. For paleoenvironmental studies of these sediments, two stratigraphic sections (Kuh-e Asaki and Horgan sections) have been measured and sampled. The thicknesses of these two ...  Read More

The role of geological structures in fractal dimension of fractures and drainages in Southwestern Lenjan-Isfahan

A. S Khalifeh Soltani; S. A Alavi; M. R Ghassemi

Volume 26, Issue 101 , December 2017, , Pages 45-56


  Fractal analysis of drainages and fractures is a useful tool to determine the maturity structure of a region. With the help of fractal geometry, this study investigates the fractal dimension of drainages and fractures in the southwestern part of Lenjan, and examines the role of geological structures ...  Read More

Geometrical and Kinematic Analysis of the Vijenan Anticline – South of Gilan-e-Gharb

A Malaekeh; M.R Ghasemi; S Hakimi; A Bahroudi

Volume 25, Issue 97 , December 2016, , Pages 347-361


  The Vijehnan anticline is located to the south of the Gilan-e-Gharb, in the simply folded belt of the Zagros. For analyzing the geometry and kinematics of the anticline, we first produced a geological map using a variety of satellite imagery, published geological maps and field studies. Four structural ...  Read More

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


  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

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


  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


  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

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


  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

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


  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

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


  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

The Magnetic Characteristics of Sandstone Rocks of Shemshak Group in Response to Application of Geomagnetic Methods

Z Hamidi Beheshti; H Alimohammadian; M Talebian; A Shahidi; M.R Ghassemi

Volume 24, Issue 95 , June 2015, , Pages 153-164


  Geomagnetism is one of the most applied techniques of geophysics in geology. Today, this method is applied in different disciplines such as Magnetic fabric of rocks, palaeomagnetism and environmental magnetism. Each of these magnetic methods is suitable for a particular lithology. Therefore, the potential ...  Read More

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


  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