Original Research Paper
2. Determination of Optimal Policy Making Regarding the Landslides around Villages using DSS, Case Study Barikan Landslide

J. Ghayoumian; S.M. Fatemi Aghda; O. Ataee; M.H. Davoudi; A.A. Norouzi

Volume 17, Issue 65 , Winter 2007, Pages 2-11


         In this research a Decision Support System (DSS) has been used to support decision makers for policy making regarding the landslides which typically take place around villages. Definite software was utilized to design a model which include three strategies: landslide ...  Read More

Original Research Paper
3. Neotectonics of Sepidrud River and Gilan Plain

B. Vahdati Daneshmand; M.R. Ghassemi; M. Ghorashi; N. Haghipour

Volume 17, Issue 65 , Winter 2007, Pages 12-25


       According to historical maps of Iran, changing the course of Sepidrud from Dastak to Kiyashahr has occurred in a very recent time. Although migration of meandering streams over the delta plain is a natural phenomenon and oscillations of Caspian Sea might have affected the course ...  Read More

Original Research Paper
4. Correlation between Campanian – Maastrichtian Deposit in Kopeh-Dagh and Central Iran Basins

L. Bakhshandeh; A. Aghanabati; T. Mohtat

Volume 17, Issue 65 , Winter 2007, Pages 26-35


  The first studied Abtalkh Formation with Campanian – Maastrichtian age is well exposed in Kopeh Dagh area (Mozduran section). This formation conformably underlain carbonates of Abderaz Formation and overlain by Neyzar sandeston Formation, both formations have a gradual contact. The second studied ...  Read More

Original Research Paper
5. Calcareous Nannofossils Biostratigraphy of Neyzar Formation in Type Section (Tange-Neyzar)

F. Hadavi; A. Pouresmaeil

Volume 17, Issue 65 , Winter 2007, Pages 36-47


  Nannofossils are suitable for biostratigraphical studied since they are aboundant, planktonic, rapidly evolving and largly cosmopolitan, especially in Late Cretaceous.                                           ...  Read More

Original Research Paper
6. Faults Detection Using Seismic Coherency Attribute

A.R. Javaheri Niestanak; A. Javaherian; N. Amini

Volume 17, Issue 65 , Winter 2007, Pages 48-59


  Coherency attribute is one of the proper tools in interpretation of structural discontinuities and stratigraphy features in 3-D seismic data. Coherency measurements in three dimensions discuss trace-to-trace similarity and therefore represent interpretable changes in these cases. The similar traces are ...  Read More

Original Research Paper
7. Beneficiation of Lakhshak Antimony Ore Using Flotation Method

M. Abdollahy; A. Raissi; H. Naderi

Volume 17, Issue 65 , Winter 2007, Pages 60-69


  An investigation on beneficiation of Lakhshak antimony ore was carried out using flotation methods. The grade of antimony in representative sample was 17.23%. The most important minerals were stibnite, quartz and pyrite and the degree of liberation of stibnite was found to be 700 micrometer. The raw ...  Read More

Original Research Paper
8. Quantification of the Spatial-Temporal Distribution of Aftershocks Associated with the 2006 Darb-e-Astaneh (Silakhor) Earthquake, western Iran

A. Zamani; M. Agh-Atabai

Volume 17, Issue 65 , Winter 2007, Pages 70-79


  The 31 March, 2006 earthquake with Mw=6.1 destroyed villages in the Darb-e-Astaneh (Silakhor) region of the Lurestan province. The epicenteral area of this earthquake lies near the Main Recent Fault (MRF) and its right lateral mechanism indicates that it belongs to this fault zone. The main shock was ...  Read More

Original Research Paper
9. Stratiform Exhalative-Volcanogenic Tungsten (Cu-Zn) Mineralization in Chah-Calap Deposit and its Ore-Bearing Horizons

A. Shoale; E. Rastad; A. R. Babakhni

Volume 17, Issue 65 , Winter 2007, Pages 80-99


       Chah-Calap W (Cu-Zn) deposit is located in Lut Block. It is a part of Central Iran Paleozoic platform which has been subjected to late Cimmerian orogenic movements. Chah-Calap ore- bearing volcano-sedimentary sequence of upper Triassic-Jurassic age was metamorphosed to green ...  Read More

Original Research Paper
10. Feasibility Study of Khushoomi Uranium Ore Concentration with Magnetic and Electrostatic Methods

M. Pakdel; B. Rezai; R. Asgari; K. Nazari

Volume 17, Issue 65 , Winter 2007, Pages 100-108


          Magnetic and electrostatic properties of minerals are the important characterizations used in mineral processing technology for concentration of minerals. Mineralogy and degree of liberation of the ore with a uranium average content of 1540 ppm, has been studied ...  Read More

Original Research Paper
11. Skarn Geochemistry - Mineralogy and Petrology of Source Rock Sangan Iron Mine, Khorasan Razavi, Iran

M. H. Karimpour; A. Malekzadeh Shafaroudi

Volume 17, Issue 65 , Winter 2007, Pages 108-125


  Sangan Iron ore deposit is located 300 km southeast of Mashhad (Eastern Iran). Based on the high grade, low P- content and big ore reserve, Sangan is an important Iron mine in Iran. It is a magnetite skarn and can be classified as iron-oxide type deposit. Based on the surface exposure, the western magnetite ...  Read More

Original Research Paper
12. Petrology and Tectonic Setting of Lakhshak Granodiorite, NW of Zahedan, Iran

A. Kananian; M. Rezaei-Kahkhaei; D. Esmaeili

Volume 17, Issue 65 , Winter 2007, Pages 126-143


       The Lakhshak granitoid pluton which is located at 10 km northwest of Zahedan, has intruded into the Eocene flysch sediments with an elliptical shape and NW-SE direction. This pluton after emplacement has been cut by numerous dykes with NE-SW trend. These dykes comprised about ...  Read More

Original Research Paper
13. A New Aspect on the Neyzar Formation based on New Findings of Fossils

M. Vahidinia; A. Sadeghi; A. Shemirani; A-A. Aryai; M-A. Adabi

Volume 17, Issue 65 , Winter 2007, Pages 144-169


  The Kopet Dagh basin was formed during and after the collision of Turan plate with Iran plate before late Carnian (about 225 m.y. ago). It is located in the northeast of Iran and has a WNW to ESE trend. Neyzar Formation is composed of siliciclastic sediments and sandy shale and sandy limestone. This ...  Read More

Original Research Paper
14. Environmental Interpretation of Kashafrud Formation (Upper Bajocian- Lower Bathonain) based on Ichnofossils, NE Iran

M. R. Poursoltani; R. Moussavi Harami; Y. Lasemi

Volume 17, Issue 65 , Winter 2007, Pages 170-194


        The KopetDaghBasin of northeast Iran formed in the NeotethysOcean after the closure of Paleotethys in the south of Turan plate. A thick sequence of Jurassic to Miocene sediments has been deposited in this basin without any major break. The siliciclastic Kashafrud Formation ...  Read More

Original Research Paper
15. Study of 2D and 3D Geometric Models Applied on SAR Images(A case study in BAM area)

M. Dehghani; M. J. Valadan Zouj; A. Mansourian

Volume 17, Issue 65 , Winter 2007, Pages 183-195


  study several 2D and 3D math models have been tested in order to correct slant range SAR data geometrically. Some of these models consider the imaging geometry at the time of imaging while the others relate the ground space to the image one by mathematical polynomials. The images used here are 3 ENVISAT ...  Read More