Original Research Paper
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

Original Research Paper
The Biostratigraphy of Lower Triassic Strata in Ruteh Section(Central Alborz) at North of Tehran

H. Pashaei; B. Hamdi; S. A. Aghanabati

Volume 22, Issue 86 , December 2012, Pages 11-18

https://doi.org/10.22071/gsj.2012.54051

Abstract
  The studied section (Ruteh) is situated in central alborz, 31km north of Tehran.The thikness of measured section is 312m. The Elika Fm in Ruteh section is located 1 km far from the north of  Ruteh village  and 3 km far from the north of Fasham city. Lowermost strata seems to be parallel to ...  Read More

Original Research Paper
Geometry, Kinematics and Structural Evolution of the Cheshmeh Nay Fault Zone in East Alborz-Allah Dagh

A. Naeimi; Gh. Heidarzadeh; M. R. Sheikholeslami

Volume 22, Issue 86 , December 2012, Pages 19-28

https://doi.org/10.22071/gsj.2012.54053

Abstract
  The ~100km-long NE-SW Cheshmeh nay fault zone is located in Alborz-Allah Dagh Mountains. This fault zone is composed of several faults with dips between 40 to 85° toward NW or SE. The Cheshmeh nay fault zone belongs to the Shahrud fault system and has a left-lateral motion. Geomorphic evidence such ...  Read More

Original Research Paper
Electrical Resistivity Structure of the Sabalan Geothermal System Inferred from Magnetotelluric and TDEM Data

B. Oskooi; G.A. Fanaee-Kheirabad

Volume 22, Issue 86 , December 2012, Pages 29-34

https://doi.org/10.22071/gsj.2012.54054

Abstract
  Geothermal energy is playing a large role as an alternative energy source for both electricity generation and space heating. Sabalan is a high temperature geothermal region in Ardabil province northwestern of Iran. In this study the conductivity structure of the top crust (depth lower than 2 kilometers) ...  Read More

Original Research Paper
Geochemical and Environmental Assessment of the Heavy Metals in the Soils Derived from the Gorgan Schists

H. Ghasemi; Mojtaba. Garavand; N. Hafezi Moghddas

Volume 22, Issue 86 , December 2012, Pages 35-46

https://doi.org/10.22071/gsj.2012.54055

Abstract
  In this paper, the role of Gorgan metamorphic complex, as a geogenic source of the heavy metals has been investigated in the soils of south Kordkoy and Gorgan areas. For this, some important soil chemical parameters such as pH, EC, CEC, and concentrations of the heavy metals in 14 soil samples and 6 ...  Read More

Original Research Paper
Petrography, Geochemistry, Mineralogy, Fluid Inclusions and Mineralization Study of Vorezg- Qayen Copper Deposit

V. Alizadeh; M. Momenzadeh; M. H. Emami

Volume 22, Issue 86 , December 2012, Pages 47-58

https://doi.org/10.22071/gsj.2012.54056

Abstract
  Based on Qayen 1:100000 geological map, the copper mineralization of Vorezg in volcanic rocks is attributed to Paleocene-Lower Eocene. Submarine volcanic rocks of the study area are found in two forms of lava and pyroclastics. Based on field and laboratory investigations, the outcropped rocks in Vorezg ...  Read More

Original Research Paper
Joint Sets Classification by 3-Parameters, Case Study: Neyriz Marble Mine (Fars Province, Iran)

M. Maghsoudi; F. Rafia; M. Ghorashi

Volume 22, Issue 86 , December 2012, Pages 59-64

https://doi.org/10.22071/gsj.2012.54063

Abstract
  Classification of discontinuities and fractures in rock plays an important role in study and problem solving in geosciences fields, especially in Engineering Geology and Rock Mechanics. Nowadays, joints are classified on the basis of two geometrical parameters of dip and dip direction, presented on stereonets. ...  Read More

Original Research Paper
Calcareous Nannofossils Biostratigraphy of the Gurpi Formation At the Bavan Section, Northwest Shiraz

M. Azizi; S. Senemari

Volume 22, Issue 86 , December 2012, Pages 65-74

https://doi.org/10.22071/gsj.2012.54068

Abstract
  Using calcareous nannofossils is a powerful way for biozonation in sub-stage level, especially in the Late Cretaceous and Cenozoic, because they are planktonic, cosmopolitan, abundant and have very short age. Considering lack of any precise paleontological studies about the Gurpi Formation in the NW ...  Read More

Original Research Paper
A Study of Ophiolitic Extrusive Sequence and Supraophiolite Series in Gez-Afchang Area, Tectonomagmatic Constrains

M. Khalatbari Jafari; M. Ghani

Volume 22, Issue 86 , December 2012, Pages 75-86

https://doi.org/10.22071/gsj.2012.54069

Abstract
  The extrusive sequence exposed in the vicinity of Gez village located in the NW Sabzevar, comprises a diversity of rocks which could be divided in three main parts. The lower part contains abundance hyaloclastic breccia and tuff, and the middle part comprises vesicular pillow lava and the upper part ...  Read More

Original Research Paper
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

Original Research Paper
Palynostratigraphy and Reconsideration of the Shemshak Group Based on Dinoflagellate Cysts

E. Ghasemi-Nejad; M., Asadi; M. Shahmoradi; A. Aghanabati; T. Mohtat

Volume 22, Issue 86 , December 2012, Pages 99-106

https://doi.org/10.22071/gsj.2012.54071

Abstract
  The Nayband Formation was sampled at Chal-Sefid and Zard mountains in central Iran, for palynology and palynostratigraphy in order to take the advantage of dinoflagellate cysts to locate the Triassic and so called Jurassic boundary. The Chal-Sefid section is located about 45 km southwest of Kashan city ...  Read More

Original Research Paper
Ground Water Exploration in Karst Terrains using Geoelectrical Tomography, Southwest Izeh

H. R. Nassery; F. Alijani; M. Nakhaei

Volume 22, Issue 86 , December 2012, Pages 107-118

https://doi.org/10.22071/gsj.2012.54074

Abstract
  To determine the ground water potential of the karst aquifers, in the southwest of Izeh, three profiles and 62 vertical electrical sounding (VES) conducted by Schlumberger array, eight profiles were performed using dipole-dipole configuration, and 3-D configuration applied in two sites. However, Schlumberger ...  Read More

Original Research Paper
Chemical Variations of Metamorphic Minerals in Basic Mylonitic and Metasomatized Rocks, NW Urumieh

K. Mohammadiha; M. Sabzehie; M. Ghahraei pour; A. Kosari Torbehbar

Volume 22, Issue 86 , December 2012, Pages 119-130

https://doi.org/10.22071/gsj.2012.54075

Abstract
  Located in the NW Iran, in Sanadaj-Sirjan metamorphic belt, the studied area mainly comprises of metamorphic and varied acidic-basic igneous originated rocks. Basic metamorphic rocks have been chemically controlled by two main metamorphic processes including metasomatism and dynamic deformation. Amphibole ...  Read More

Original Research Paper
Crustacean Microcoprolites from the Upper Jurassic – Lower Cretaceous of the Northern East and East Shiraz (Fars Province)

F. Rostami; V. Ahmadi

Volume 22, Issue 86 , December 2012, Pages 131-134

https://doi.org/10.22071/gsj.2012.54077

Abstract
  In this research two stratigraphic sections of Lower Cretaceouse to Upper Jurassic sedimentary (Surmeh and Fahliyan Formation in Folded-Zagros Zone) have been selected. Based on microfacies studies (in 400 thin-sections) three species of Ichnofossils microcoprolites from Crustaceans related as the Follow: ...  Read More

Original Research Paper
Kinematic Analysis of Geomorphic Markers and Estimation of the Relative Rate of Active Deformations along the Hormud Quaternary Fault- East of Central Zagros

Kh. Hashemi; B. Oveisi; A. Saeedi

Volume 22, Issue 86 , December 2012, Pages 135-142

https://doi.org/10.22071/gsj.2012.54078

Abstract
  Young deformations and folds are one of the impressive characteristics of Zagros simple folded belt. The studied structure is Hormud fault-related fold which is situated in the coastal Fars and the southward of Lar town. In order to illustrate the geometry of the studied structure and its kinematic relationship ...  Read More

Original Research Paper
Rhenium Distribution and Its Controlling Factors in Molybdenite Types of Kerman Porphyry Copper Deposits

B. Shafiei; S. Lali faz; Gh. H. Shamanian; H. Taghizadeh; M. Hossaini; R. Mathur

Volume 22, Issue 86 , December 2012, Pages 143-154

https://doi.org/10.22071/gsj.2012.54079

Abstract
    In present study, Re concentration determined in 30 hexagonal (2H) and trigonal (3R) molybdenite samples belong to veinlets of different stages of hypogene mineralization from 7 porphyry Cu and Mo deposits from Kerman region. Re concentration in molybdenites of these ore deposits varied from 49 ...  Read More

Original Research Paper
Microbiostratigraphy and Microfacies of Tale-Zang Formation in Lorestan Basin

P. Rajabi; I. M. Moghadam; F. Gharib

Volume 22, Issue 86 , December 2012, Pages 155-160

https://doi.org/10.22071/gsj.2012.54080

Abstract
  In this study, the Sediments of Taleh-Zang Formation was investigated in South West of Khoramabad. The thickness of Taleh-Zang Formation in Qalebi section measured 200m. In this section the sediment of Taleh-Zang Formation is isoclines between Amiran Formation at the base, and Kashkan Formation at the ...  Read More

Original Research Paper
Changing Rare Earth and Trace Elements during the Migmatization of the Qori Metabasic Rocks, Neyriz, SW Iran

A. N. Fazlnia

Volume 22, Issue 86 , December 2012, Pages 161-170

https://doi.org/10.22071/gsj.2012.54082

Abstract
  A barrovian-type metamorphism occurred in the mafic rocks from the Qori complex (South Sanandaj - Sirjan zone), because of a regional arc-related metamorphism with a peak metamorphic condition of 700 °C and 8.5 kbar at 147 million years ago. As a result of the process, the rocks changed to migmatite. ...  Read More

Original Research Paper
Engineering Geological Model of the Western Caspian Sea Coast

M. R. Nikudel; M. Hashemi; N. Hafezi Moghaddas; M. Khamehchiyan

Volume 22, Issue 86 , December 2012, Pages 171-182

https://doi.org/10.22071/gsj.2012.54083

Abstract
  The overview of geological condition of an area is too important for land-use planning. An engineering geological model can provide this overview. In this research, based on carried out studies and investigations, a model is given that shows the general engineering geological conditions of sediments ...  Read More

Original Research Paper
Comparison of Seismic, Geodetic and Geologic Moment Rates in Eastern Alborz and Kopeh Dagh

M. Talebian

Volume 22, Issue 86 , December 2012, Pages 183-192

https://doi.org/10.22071/gsj.2012.54084

Abstract
  The north east of Iran, extending from central Alborz to Kopeh Dagh Mountains, is one of the most seismically active regions of Iran. Several large and ancient cities are located in this region and thus provide relatively reach documented history of earthquakes. Numerous active faults have been known ...  Read More

Original Research Paper
Structure in the Chah Gaz Zn-Pb-Cu Massive Sulfide Deposit,South of Shahr-e -Babak

K. Orang; Mohammad Mohajjel; F. Mousivand; E. Rastad

Volume 22, Issue 86 , December 2012, Pages 193-202

https://doi.org/10.22071/gsj.2012.54085

Abstract
  The Chah Gaz Zn-Pb-Cu volcanogenic massive sulfide (VMS) deposit is a polydeformed, polymetamorphosed ore body in southern part of the Sanandaj-Sirjan zone. The ore bodies are comprised predominantly of stratiform, tabular and lenticular massive sulfide lenses and are elongated in 0600-0700 orientation. ...  Read More

Original Research Paper
Microfacies Analysis, Sedimentary Environments and Diagenesis of the upper Carbonates of the Dalan Formation in the Persian Gulf, Iran

S. Parham; M. R. Kamali; F. Fayazi

Volume 22, Issue 86 , December 2012, Pages 203-212

https://doi.org/10.22071/gsj.2012.54086

Abstract
  The Dalan Formation (Upper Permian) is mainly composed of limestone and dolostone with minor evaporite interbeds. Upper carbonates of the Dalan Formation constitute one of the main gas reservoirs in the Zagros fold thrust belt especially in the Fars and the Persian Gulf. The upper part of the Dalan Formation ...  Read More

Original Research Paper
The Mineralogy and Petrology of Kamtal Skarn (North of Kharvana, Eastern Azarbaijan)

M. A. A. Mokhtari; H. Moinvaziri; M. R. Ghorbani; M. Mehrpartou; G. Hosseinzadeh

Volume 22, Issue 86 , December 2012, Pages 213-220

https://doi.org/10.22071/gsj.2012.54089

Abstract
  Kamtal skarn zone is located in the 20km north of Kharvana in the Eastern Azarbaijan. Skarn-type metasomatic alteration is the result of Kamtal monzonitic intrusion into the Upper Cretaceous impure carbonates. Kamtal skarn include exoskarn and endoskarn zones. Exoskarn is the major zone that its thickness ...  Read More

Original Research Paper
Archaeological Studies by Electrical Resistivity and Induced Polarization in Shadmehrak, Neyshabour

M. K. Hafizi; H. Ranjy Roodposhti

Volume 22, Issue 86 , December 2012, Pages 221-228

https://doi.org/10.22071/gsj.2012.54090

Abstract
  In this paper, the results of recent archaeological studies in Neyshabour, Iran, by the application of Electrical Resistivity (ER) and Induced polarization (IP) methods have been presented. The aim of this study was to verify the effectiveness and suitability of these techniques in detecting of the buried ...  Read More

Original Research Paper
Deep Marine Trace Fossil Assemblages and their Palaeo- Environmental Significance from the Paleocene Amiran Formation in SW Lorestan

S. R. Moussavi-Harami; Y. Nasiri; A. Mahboubi; A. Bayetgoll

Volume 22, Issue 86 , December 2012, Pages 229-244

https://doi.org/10.22071/gsj.2012.54091

Abstract
  Amiran Formation (Paleocene) in Lorestan, folded Zagros zone, contains a diverse and exceptionally well preserved ichnofauna. A quantitative study of trace fossil in the Paleocene deep-marine clastic systems, this Formation, shows that they are powerful discriminators of submarine fan and related environments. ...  Read More

Original Research Paper
Petrography, Geochemistry, Origin and Tectonic Setting of Khoshoumi – DarAnjir Intrusive Complex, SW Saghand (Central Iran)

N. A. Rashidnejad Omran; A. A. Fattahi; F. Masoudi

Volume 22, Issue 86 , December 2012, Pages 245-260

https://doi.org/10.22071/gsj.2012.54092

Abstract
  The late Eocene post-collisional Khoshoumi- Dar-Anjir intrusive complex consist of two adjacent Khoshoumi granite and Dar Anjir diorite plutons  in Saghand area, located in 120 km northeast of Yazd in Central Iran structural zone. This complex intruded within high-grade metamorphic rocks of Chapedony ...  Read More

Original Research Paper
Kinematic Analysis of Folding Geometry in Aghajari Anticline (Dezful Embayment), Iran

N. Kharazizadeh; M. Almasian; Sh. Sherkati

Volume 22, Issue 86 , December 2012, Pages 261-272

https://doi.org/10.22071/gsj.2012.54094

Abstract
  Geometric style and deformation analysis of folding are two important aims of geological studies in Zagros, which is related to concentration of considerable of hydrocarbon reservoirs in anticlinal traps of the belt. In this study, evolution and geometry of Aghajari subsurface anticline (Dezful embayment) ...  Read More

Original Research Paper
Proposing a New Strategy to Make Precise Re-leveling Observations of Iran in Vertical Geodynamical Studies

Yahya Djamour; M. M. Hossainali; Y. H. Chavari; P. Vanicek; H. Nazari; M. Amighpey; S. Arabi

Volume 22, Issue 86 , December 2012, Pages 273-260

https://doi.org/10.22071/gsj.2012.54096

Abstract
  The technique of precise leveling is certainly the most precise in gathering height difference observations. The main limitation of the mentioned technique is its high cost and low speed characteristics. Hence, for the purpose of repeating the precise leveling measurements (re-leveling), which is necessary ...  Read More