Original Research Paper
Processing of Sedimentary and Low Grade Dalir Area Phosphate Rocks by Flotation

S. Khoshjavan; B. Rezai; A. Amini

Volume 22, Issue 85 , December 2013, Pages 3-8

https://doi.org/10.22071/gsj.2012.54013

Abstract
  In this research, processing of Dalir area phosphate ore was investigated for reduction of its gangue minerals such as carbonates (mainly calcite and poorly dolomite) and silicates minerals. According to characterization studies, phosphate mineral content of the ore  was sedimentary collophane mineral ...  Read More

Original Research Paper
Geochemistry and Fluid Inclusions Studies of Low-Sulfidation Epithermal Gold Mineralization in the Mirkuh Ali Mirza Area, Sarab, NW Iran

A. Maghsoudi; M. Yazdi; M. Mehrpartou; M. Vosooghi Abedini

Volume 22, Issue 85 , December 2013, Pages 9-14

https://doi.org/10.22071/gsj.2012.54015

Abstract
  The Mirkuh Ali Mirza gold mineralization is located in north Sarab in the Western Alborz–Azerbaijan structural zone. Mineralization was formed in the form of a vein occurring in Neogene dacitic and rhyodacitic tuff along a series of NW–SE trending fault; Mineralization associated with quartz-sericite-adularia-calcite ...  Read More

Original Research Paper
Slip Rate Partitioning in Active Faults System of Oblique Collision Zone of Arabia-Eurasia Plates based on Boundary Elements Method

A. Rastbood; B. Vosooghi

Volume 22, Issue 85 , December 2013, Pages 15-26

https://doi.org/10.22071/gsj.2012.54017

Abstract
  In this research, fracture mechanic concepts and dislocation modeling is used to examine the velocity field of GPS observables on the oblique collision zone of Arabia-Eurasia plates. For this purpose, the significant active faults in the study area were selected and proper boundary conditions applied. ...  Read More

Original Research Paper
Comparison the AHP and FUZZY-AHP Decision Making Methods in Underground DAM Site Selection in Taleghan Basin

V. Esavi; J. Karami; A. Alimohammadi; S. A. Niknezhad

Volume 22, Issue 85 , December 2013, Pages 27-34

https://doi.org/10.22071/gsj.2012.54018

Abstract
  In recent decades digging deep wells and a half deep flume was gradually replaced aqueduct that by the relative merits is attended the great environmental effects such as loss underground water level and creating subsidence phenomenon for most regions of interest. Recent studies have been accomplish ...  Read More

Original Research Paper
Biostratigraphy and Lithostratigraphy of the Middle and Late Jurassic Rocks West of Binalud Range Northwest of Neyshabour, Northeast Iran

F. Dabbaghi Sadr; K. Seyed-Emami; M. Majidi Fard

Volume 22, Issue 85 , December 2013, Pages 35-46

https://doi.org/10.22071/gsj.2012.54019

Abstract
  Upper Jurassic rocks are well developed at the western part of the Binalud Range (northeast Iran). These consist mainly of limestone, marlstone and marl with few intercalations of sandstone and conglomerate. The thickness of this succession in the study section (Bormahan, northwest of Neyshabour) ...  Read More

Original Research Paper
Mechanism of Deformation and the Associated Microstructures in the Basic Mylonitic Rocks, NW Urumieh

K. Mohammadiha; M. Sabzehie; M. Ghahraie pour; J. Radfar

Volume 22, Issue 85 , December 2013, Pages 47-54

https://doi.org/10.22071/gsj.2012.54020

Abstract
  A large widespread outcrop of granitoid - mylonitic gabbros complexes is observed in northeastern part of Serow, NW Iran. Those rocks were considered as Precambrian gneiss and metamorphic rocks (Haghipour and Aghanabati, 1977), or alternatively, a complex of acidic to basic igneous rocks which have undergone ...  Read More

Original Research Paper
Improving the Threshold of Detectable Co-Seismic Displacements by Using High Rate GPS Measurements

Yahya Djamour; S. Tabibi; M. M. Hossainali

Volume 22, Issue 85 , December 2013, Pages 55-62

https://doi.org/10.22071/gsj.2012.54021

Abstract
  The accuracy of GPS derived positions in short term measurements largely depends on the better modeling of residual errors which is normally reduced in long term measurements by averaging the obtained results. To increase the accuracy of the movements obtained through the analysis of high rate data in ...  Read More

Original Research Paper
Study of Occam’s Inversion Results on AEM Data in Kalat-e-Reshm Area

F. Shirzaditabar; B. Oskooi; M. Bastani

Volume 22, Issue 85 , December 2013, Pages 63-70

https://doi.org/10.22071/gsj.2012.54022

Abstract
  Airborne electromagnetic data can be obtained in time and frequency domains. In time domain, data consist of the time derivative of the secondary field while in frequency domain it is the absolute value of the secondary field. Here, we have used Occam’s inversion method on airborne electromagnetic ...  Read More

Original Research Paper
Rare Earth Minerals in Esfordi Magnetite-Apatite ore Deposit, Bafq District

M. Boomeri

Volume 22, Issue 85 , December 2013, Pages 71-82

https://doi.org/10.22071/gsj.2012.54023

Abstract
  The Esfordi magnetite-apatite ore deposit is located in 35 Km northeast of Bafq city in Central Iran. Bafq is an important mining district which hosts more than 45 iron deposits and a few Zn-Pb massive sulfides, Mn and U deposits. The district is restricted by two main strike-slip faults of Kuhbanan ...  Read More

Original Research Paper
Morphology and Seismology of MW=5.8 2010 July 20 Koodian Earthquake, Southeast Zagros

M. Nemati; B. Oveisi; M. Foroutan; M. J. Bolourchi

Volume 22, Issue 85 , December 2013, Pages 83-90

https://doi.org/10.22071/gsj.2012.54024

Abstract
  A MN=5.8 (Institute of Geophysics Seismological Center, University of Tehran) earthquake in 2010 July 20 shook southeastern Zagros, over the active ramp of the Mountain Front Fault (MFF). A body killed during the earthquake and it’s aftershocks have affected hundreds of square kilometers around ...  Read More

Original Research Paper
Geochemistry and Petrogenesis of the Raveh Neogene Volcanic andSub-Volcanic Rocks in the Urumieh – Dokhtar Magmatic Belt (Central Iran)

M. H. Emami; R. Monsef; N. Rashid Nejad Omran

Volume 22, Issue 85 , December 2013, Pages 91-104

https://doi.org/10.22071/gsj.2011.54025

Abstract
  Miocene to Pliocene volcanic rocks in the Raveh region have exposed northern part of the Urumieh - Dokhtar Magmatic Belt. Neogene volcanic rocks are situated on Upper Red Formation. Magmatic activity separated in two phase. The first phase is composed of basic to intermediate volcanic rocks such as basaltic-andesite ...  Read More

Original Research Paper
Time Series Analysis of Hashtgerd Subsidence Using Radar Interferometry and Global Positioning System

P. Haghighatmehr; M. J. Valadanzouj; R. Tajik; S. Jabari; M. R. Sahebi; R. Eslami; M. Ganjiyan; M. Dehghani

Volume 22, Issue 85 , December 2013, Pages 105-114

https://doi.org/10.22071/gsj.2012.54026

Abstract
  A large area in Hashtgerd plain, in southwest of Tehran, is subject to the land subsidence induced by overexploitation of groundwater. In this paper, in order to study the subsidence SAR interferometry (InSAR) and global positioning system (GPS) are used. The small baseline subset (SBAS) algorithm is ...  Read More

Original Research Paper
Correlating Primary and Secondary Geochemical Halos with Copper-Gold Mineralization Evidence in Rahimi Area, South Kajeh, Ferdows

A. Najafi; M.H. Karimpour; M. Ghaderi

Volume 22, Issue 85 , December 2013, Pages 115-124

https://doi.org/10.22071/gsj.2012.54027

Abstract
  Based on data processing for 51 stream sediment, 115 rock and 22 heavy mineral samples, together with field evidence for mineralization and alteration, mineralization pattern for Rahimi copper-gold prospecting area was analyzed. Twelve primary and secondary geochemical halo maps for Au-Ag-As-Ba-Cu-Co-Hg-Mo-Pb-Sb-W-Zn ...  Read More

Original Research Paper
The Major Asperities of the Alborz Tectonic Region and Finding the Maximum Probable Location of Future Large Eearthquake

Kh. Hessami Azar; Kh. Motaghi; M. Mostafazadeh

Volume 22, Issue 85 , December 2013, Pages 125-134

https://doi.org/10.22071/gsj.2012.54028

Abstract
  In this study, we estimated a local seismic hazard map for the Alborz tectonic region located in north of Iran. The technique of mapping local recurrence time, TL, was used to map major asperities of the region and the asperities considered as the area with maximum hazard probability. The analysis was ...  Read More

Original Research Paper
Biostratigraphy and Biogeography of the Gurpi Formation in Mish-khas Section, South of East Ilam Province, Based on Foraminifera

M. Asgharian Rostami

Volume 22, Issue 85 , December 2013, Pages 135-148

https://doi.org/10.22071/gsj.2012.54029

Abstract
  In order to study the Gurpi formation for biostratigraphical purposes the 310 meters thick section was sampled at Mish-khas Sectiona, Ilam province. The sequence is mainly made up of monotonous marl, limy marl and Limestone and contains two formal members of Lopha (with brachiopod, Echinoid and Bivalve) ...  Read More

Original Research Paper
Landslide Hazard Zonation by Using Statistical Methods (Pishkuh Region in Fereydonshahr Province)

K. Shirani; A. Seif

Volume 22, Issue 85 , December 2013, Pages 149-158

https://doi.org/10.22071/gsj.2012.54030

Abstract
  The landslide hazard zonation was executed by different methods and many of these methods were based on special condition of the study area. This research, at first, Pishkuh region (fereyidonshahr administration) was selected with 77646 hectars area in west of Esfahan province. Then, landslide inventory ...  Read More

Original Research Paper
Tehran Seismic Vulnerability Assessment Due to the North City Fault by a Multi Attribute Decision Making Approach Based on Evidential Reasoning

M. Jahankhah; M. R. Delavar; B. Moshiri; M. Zare

Volume 22, Issue 85 , December 2013, Pages 159-166

https://doi.org/10.22071/gsj.2012.54031

Abstract
  Seismic vulnerability assessment is a multi attribute decision making problem based on geospatial information where the weight and importance of each of the criteria is determined by experts. Geospatial information deals with some uncertainties. One of the ways for integrating this information is evidential ...  Read More

Original Research Paper
Petrographic Features and Geochemical Studies of East Qazvin Volcanic Rocks in Order to Determine Natural Pozzolan Capable Units

Rahimzadeh Bahman; F. Masoudi; S. M. Fatemi Aghda; T. Parhizkar; A. Pour Khorshidi

Volume 22, Issue 85 , December 2013, Pages 167-172

https://doi.org/10.22071/gsj.2012.54033

Abstract
  In the north of Abyek - Qazvinmain road, various volcanic units contain olivine basalt, basalt, andesitic basalt, dacite, andesite and their associated tuffs with Eocene to Quaternary age are exposed. In order to examine geochemical and petrographic features effect on pozzolan activity, five samples ...  Read More

Original Research Paper
Effect of Natural and Anthropogenic Factors on Water Resources Quality in Lenjanat Plain, Esfahan, Iran

H. R. Nassery; Z. Kayhomayoon; M. Nakhaei

Volume 22, Issue 85 , December 2013, Pages 173-186

https://doi.org/10.22071/gsj.2012.54034

Abstract
  Hydrochemical properties of water resources in Lenjanat plain and the effect of natural and anthropogenic factors have been determined. For this purpose, 162 water samples including groundwater, surface water and industrial wastewater seasonally in 1387 were collected. The results of field and laboratory ...  Read More

Original Research Paper
Study of Blasting Effects on Toyserkan Sarabi Dam's Floodgate

A. Sharifi; A. Sadidkhouy; F. Rezaie

Volume 22, Issue 85 , December 2013, Pages 187-198

https://doi.org/10.22071/gsj.2012.54041

Abstract
  Blasting processes as an essential phase in processing circulation is used in blasting of mines and development operations. Released energy in a blasting of an open mine, in addition to breakdown stones and heat them up, causes propagation of seismic energy around the environment of mine. In order to ...  Read More

Original Research Paper
Using Numerical Modeling for Estimation of Rate of Nucleation and Growth Time of Plagioclase Microlites from Quaternary Gandom Beriyan Basaltic Flows, NE of Kerman

D. Raeisi; S. Dargahi; H. Moeinzadeh; M. Arvin

Volume 22, Issue 85 , December 2013, Pages 199-204

https://doi.org/10.22071/gsj.2012.54042

Abstract
  Gandom Beriyan, as a part of Quaternary volcanism of Iran, is a kind of messa which is covered by very dark lava flows. The flows are generally fresh to rarely altered alkali olivine basalts and cover an area around 480 km2 in southern part of the Lut desert in northeast of Kerman. The common textures ...  Read More

Original Research Paper
Petrology, Geochemistry and Tectonomagmatic Settinng of Kaleybar Intrusion (Eastern Azarbaijan)

Gh. Tajbakhsh; M. H. Emami; H. Moine Vaziri; N. Rashidnejad Omran

Volume 22, Issue 85 , December 2013, Pages 205-224

https://doi.org/10.22071/gsj.2012.54044

Abstract
  Nepheline syenite intrusive of Kaleybar is located in South and West of the Kaleybar city in eastern Azarbayjan province. This zoned intrusive complex is formed by penetration of two separated silica undersaturated and saturatated magmatic phases with Oligocene-Miocene ages. Undersaturated rocks are ...  Read More

Original Research Paper
Microbiostratigraphy of the Aitamir Formation in North West of Kopeh Dagh Basin (Maraveh Tappeh Section)

M. Motamedalshariati; A. Sadeghi; H. Vaziri Moghadam; R. Moussavi Harami

Volume 22, Issue 85 , December 2013, Pages 225-236

https://doi.org/10.22071/gsj.2012.54045

Abstract
  A stratigraphic section in west of Maraveh Tappeh town has been selected and measured in order to study the Aitamir Formation in north west of Kopeh Dagh. The Aitamir Formation with 1070 m thickness, consists of sandstone in the lower part and shale and marl in the upper part. The lower and upper boundaries ...  Read More

Original Research Paper
Landslide Monitoring Using Moiré Technique

S. Rasouli; Z. Eskandari; Y. A. Abedini

Volume 22, Issue 85 , December 2013, Pages 237-240

https://doi.org/10.22071/gsj.2012.54046

Abstract
  In this work a new method for measuring landslide displacements using moiré technique is presented. A linear periodic pattern (carrier grating) is pasted on the surface of a wall that has a crack due to the landslide displacements. The crack has been opening in the last few years. Lines of the ...  Read More

Original Research Paper
The Role of Subduction Components in the Generation of the Crustal Sequence of Dehshir Ophiolite

M. Khalatbari Jafari; H. Sepehr

Volume 22, Issue 85 , December 2013, Pages 241-268

https://doi.org/10.22071/gsj.2012.54047

Abstract
  The south Dehshir tectonized Ophiolite located at the extreme northern part of Sharbabak-Dehshir Ophiolite belt comprise of mantle peridotite and crustal sequence. The mantle peridotites are well serpentinized and consist of cpx- bearing harzburgite and lherzolite, cross cut by isolated diabasic dikes. ...  Read More