Original Research Paper
2. Interpretation and Exploratory Application of Enzyme LeachSMData Analysis at AyQalesi Polymetal Deposit, Southeast of Takab

M. Shirkhani; Majid Ghaderi; N. Rashidnejad-Omran; R. Mohammadi-Niaei

Volume 19, Issue 73 , Winter 2009, Pages 3-10


  AyQalesi polymetal deposit is located 30 km southeast of Takab in Orumieh-Dokhtar structural zone. For Enzyme LeachSM analysis at the deposit, 723 samples were collected from B-horizon soils. Based on the analytical results and data interpretation, six oxidation anomalies, A through F, have been defined. ...  Read More

Original Research Paper
3. Study of Chemical and Structural Changes and Determination of Temperature in a Progressive Deformation: Evidences from Zarrin Shear Zone, Ardekan

F. Masoudi; M. Mohajjel; F. Shaker Ardekani

Volume 19, Issue 73 , Winter 2009, Pages 11-16


  The Zarrin area in the north of Ardekan is the part of Central Iran Zone. Some homogenous parts of Zarrin granite located in the shear zone changed to mylonites and ultramylonites. Microstructural evidence and deformation investigation show that chemical and structural changes occurred during the progressive ...  Read More

Original Research Paper
4. Effects of Caspian (Khazar) Fault Activity on Geomorphology of Qaemshahr area

A. Lashkari; M. R. Ghassemi; M. Qorashi

Volume 19, Issue 73 , Winter 2009, Pages 17-28


  The Caspian (Khazar) fault is the boundary between the Caspian plain and AlborzMountain. As a major tectonic feature, this fault may be considered as the northern mountain front fault of the AlborzRange. Subsidence of the Caspian Sea in north, uplift of the Alborz Mountain, and its over thrusting on ...  Read More

Original Research Paper
5. Regional Modeling of Iandslide Hazard, Using Multivariate Statistic Method in Lajemrood- Sari Basin

P. Garaei; K. Soleimani; S.R. Mousavi; A. Kavian

Volume 19, Issue 73 , Winter 2009, Pages 29-36


  In basins of the northern part of Iran, combination of natural and human factors has intensified landslide and related numerous damages. The investigation importance of this phenomena and effective factors of landslide occurrence and also determining susceptible zones it order to preventing and avoiding ...  Read More

Original Research Paper
6. Geochemical Study of Vein-Type Tungsten-Copper Mineralization in Southwest of Shazand

M. Abdi; Majid Ghaderi; N. Rashidnejad-Omran; A. Najafi

Volume 19, Issue 73 , Winter 2009, Pages 37-50


  Two cases of tungsten-copper vein-type mineralization have been studied in the Nezam-abad and Deh-hossein areas, in southwest of Shazand. The hydrothermal quartz-tourmaline mineralized veins have different host rocks (biotitic-granite and meta-sandstone). Considering similar ore metals (tungsten-copper-tin-lead-zinc) ...  Read More

Original Research Paper
7. Geochemical Investigation in Exploration Kahang Area

A. Khakzad; A. Khakzad; H. Asadi; M.H. Emami; I. Rasa

Volume 19, Issue 73 , Winter 2009, Pages 51-56


  Regional exploration of Kahang is located at 73 km of north east of Esfahan city and 10 km of east of Zefreh town. This deposit is located in Uromieh-Dokhtar volcanoplotonic belt. For the first time this deposit was investigated with using the satellite images processing (TM). Base on the primary study, ...  Read More

Original Research Paper
8. Effect of Crashed Areola during Blast Advancing on 3dimention Numerical Analysis of Tunnel's Displacements "With Respect to 10th km of Gavooshan Tunnel"

H. Bahrami; A. Uromiahy; M. Ahmadi; S. Soleymani

Volume 19, Issue 73 , Winter 2009, Pages 57-64


  In a perfect design of underground spaces, amount of total displacement from the point of stability analysis is fundamental. In empirical and numerical stability analysis periphery of excavated area is consider as a continued mass. When an underground space is excavated by blasting process, so periphery ...  Read More

Original Research Paper
9. Comparing Fractures in a Unique Structural Setting of an Oilfield, Acquired from FMI

F. Khoshbakht; H. Memarian; M. Mohammadnia

Volume 19, Issue 73 , Winter 2009, Pages 65-70


  Natural fractures are the main factor which control hydraulic behavior of oil and gas reservoir in naturaly fractured reservoirs. Thus it is important to fully characterize these features in fractured reservoirs. Image logs are one of powerful tools in fracture study in wells. ‎Image log is high ...  Read More

Original Research Paper
10. Investigation of Plate Bearing and Settlement in South-Eastern and East Tehran

F. Rezaei; M. Eivazi

Volume 19, Issue 73 , Winter 2009, Pages 71-78


  The Tehran city, capital of Iran is located on young alluvium deposits which mostly cover due to rapid urban development. This urban development without proper geotechnical and geological assessment may cause great engineering and economic problems. Survey of geotechnical problems are one of the most ...  Read More

Original Research Paper
11. Depositional Environment and Sequence Stratigraphy of the Pabdeh Formation in Shiraz area

R. Mirzaee Mahmoodabadi; Y. Lasemi; M. Afghah

Volume 19, Issue 73 , Winter 2009, Pages 139-146


  Shaley Pabdeh Formation (Paleocene-Oligomiocene) expanded in Fars, Khozestan and Lorestan. Lower Lithostratigraphical limit with Gurpi Formation recognized by purple shale. Upper Lithostratigraphical limith with Asmari Formation is transitional. In order to study sedimentary environments and sequence ...  Read More

Original Research Paper
12. Mineralogy Studies of Mehdiabad Zinc-Lead Deposit- Yazd, Central Iran

M. Ghasemi; M. Momenzadeh; A. Yaghubpur; A. A. Mirshokraei

Volume 19, Issue 73 , Winter 2009, Pages 89-98


  Mehdiabad Zn-Pb-Ba deposit is located 110 km south-east of Yazd, in the Central Iran structural zone. The stratigraphic succession consists of three sedimentary formations of lower Creataceous age. The Sangestan formation, the lowest unit of shale and siltstone with calcarenitic interbeded layers. This ...  Read More

Original Research Paper
13. Study of the Hydrogeochemistry of Taftan Volcano’s Mineral Springs and their Relation to Hard-Rock Masses of Region

H. Biabangard; A. Moradian; Y. Bavali

Volume 19, Issue 73 , Winter 2009, Pages 99-108


  Taftan is a stratovolcano, located to the SE of Zahedan, eastern Iran. Due to the highlands of the volcano, a microclimate is created in the region where precipitation provides some water in the arid region that the volcano is located. Field studies and chemical analyses of thirteen mine springs from ...  Read More

Original Research Paper
14. Linear Structures in South of Tehran (Reys and Kahrizak "Faults"): Fault Scarps or Geomorphologic Phenomenon?!

H. Nazari; J-F. Ritz; R. Salamati; M. Ghorashi; A. Ghasemi; H. Habibi; F. Jamali; Sh. Javadipur

Volume 19, Issue 73 , Winter 2009, Pages 109-114


  Tehran and its surrounding region are within affecting zone of some active faults of North Tehran and Mosha in north-north east and Parchin and Pishva in south.  In addition, there are some other shorter faults and linear markers within the urban area of Tehran such as Niavaran, Mahmoudieh and Davoudieh ...  Read More

Original Research Paper
15. Study and Correlation between Lower Cretaceeous Deposites in Koppeh-Dagh and Central Iran Basins

R. Tavakoli; S. A. Aghanabati

Volume 19, Issue 73 , Winter 2009, Pages 115-122


  Tirgan and Sarchshmeh Formations, Aptian age, belong lithostratigraphically to Kopeh Dagh, for many reasons, with reference to lithology and biology contents that can be compared with Orbitolina limestone in the Central Iran. The similarities between these unites were the reason to compare the Mozdooran ...  Read More

Original Research Paper
16. Petrography, Geochemistry and Emplacement Mechanism of Hashtsar Ring Complex

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

Volume 19, Issue 73 , Winter 2009, Pages 123-132


  Hashtsar ultramafic – mafic intrusive complex is located at about 20 km east of the Kaleybar in the eastern AzerbaijanProvince. This alkaline ring complex is formed by the penetrative of undersaturated and oversaturated different magmatic phases with Late Eocene to Oligocene – Miocene ages. ...  Read More

Original Research Paper
17. Seismicity of Tehran City Region and its Vicinity Based on Tehran City Seismic Network (TCSN) Data

F. Yamini-Fard; A. S-Moradi; M. Hosseini; R. Norouzi

Volume 19, Issue 73 , Winter 2009, Pages 133-138


  From June 2004 to December 2008 low seismic activity was recorded near North-Tehran, Taleghan and Kahrizak faults and inside of Tehran city. In contrast, seismic activity along Mosha, Garmsar and North-Alborz faults is considerable. Generally seismic activity decreases from 51 degrees longitude to west. ...  Read More

Original Research Paper
18. The Study of the Crystal Size Distribution (CSD) of Garnet in the Hassan-Abaad Contact Metamorphism of Yazd

S. Zandifar; M.V. Valizadeh; M. A. Barghi; M. R. Foroodijahromi

Volume 19, Issue 73 , Winter 2009, Pages 147-152


  The crystallization history of a rock is recorded by the size and the distribution of its minerals. The porphyroblast crystal size in metamorphic rocks can give notable information about its growing medium. Considering the varieties of mineralogy in the Hassan-Abad's skarn and high frequency of garnet ...  Read More

Original Research Paper
19. Diagenesis and Geochemistry of the Ziyarat Formation in the Type Section, Tochal, (Alborz (

M. H. Adabi; M. Khatibi Mehr; A. Moallemi; A. Sadeghi; M. A. Salehi

Volume 19, Issue 73 , Winter 2009, Pages 153-163


  The Ziyarat Formation is an Upper Paleocene to Middle Eocene carbonate sequences, located in North of Tochal Village (south-east of Tehran), near Emam Zadeh Abdollah. The Ziyarat Formation with the total thickness of 212.5 m conformably overlies the Fajan conglomerate and is overlain by greenish tufaceous ...  Read More

Original Research Paper
20. Preliminary Results of Long Term Strength of Lithosphere in the Zagros Mountains of Iran: Insight from Mechanical Modeling

H. R. Nankali; B. Vosoughi; F. Soboutie; K. Hessami; M. Talebian

Volume 19, Issue 73 , Winter 2009, Pages 164-176


  A three-dimensional lithosphere model with horizontal dimensions of 1500 km×600 km and a depth extent of 70 km for the Zagros is constructed from available geophysical data to find out strength of the outermost layers in this area. The structural boundaries of the model are based on the results ...  Read More

Original Research Paper
21. Sedimentology and Geoarchaeology of Paleolithic (Mousterian) Lithic Tools in Central Iran

M. Yazdi; H. R. Pakzad; M. Mashkour; R. Elhami; M. Javeri; F. Biglari

Volume 19, Issue 73 , Winter 2009, Pages 177-186


  Determining and studying collected lithic assemblages, biota remains and deposited beds (regarding to sedimentology) of two rock shelters in the age of Late Pleistocene to recent interval in central Iran were the aims of this research. Mobarekeh (Qaleh Bozi) and Yekeh Chah (near Golpayegan) are two sites ...  Read More

Original Research Paper
22. Petrography, Tectonic Setting and Genesis of Oligocene – Miocene Igneous Rocks in Northern Part of Razan Area

R. Mohamadi; M.H., Emami; M. Vosoghiabedi

Volume 19, Issue 73 , Winter 2009, Pages 79-88


  The area is located about 230 km of southwest of Tehran. Based of geological observations, the plutonic rocks in the area consist of Neogene (Miocene) alkaline gabbro , gabbrodiorite, locogabbro and diabase . The Oligo -  Miocene calc-alkaline extrusive rocks are dacite - ryodacite , andesite trachyandesite ...  Read More