Original Research Paper
Hydrogeological and Hydrochemical Studies of Basaltic and Karstic Aquifers in Maku Area in Relation to Geological Formations

A. Asghari Moghaddam; E. Fijani

Volume 17, Issue 67 , February 2008, Pages 2-13


  Maku area is located in the north of West Azarbaijan, northwest of Iran. In this area, groundwater supplies main water demands for different purposes such as drinking, agriculture and industry. The aim of this research is to study the groundwater hydrochemistry, hydrogeological relation between karstic ...  Read More

Original Research Paper
Comparison of Hydrated and Quick Lime Effects on Geotechnical Properties of Improved Soil

S. H. Tabatabaei; A. Aghaei Araei

Volume 17, Issue 67 , February 2008, Pages 14-21


        This paper describes the result of a study on the determination of geotechnical properties of improved soil treated by quick lime and hydrated lime. Soil samples are mixed with quick lime and hydrated lime in various portions. The geotechnical properties investigated are ...  Read More

Original Research Paper
The Paleostress Analysis in the East and South East of Tehran(Sorkheh Hessar-Khodjir)

M. Saadat; S. A. Alavi; A. Saeedi

Volume 17, Issue 67 , February 2008, Pages 22-37


  To analyze the paleostress in Sorkheh Hessar – Khodjir area, different shear – fault planes and the associated slickenside lineations are measured. The stress tensor and the variation of the stress direction in the upper Triassic to Oligocene formations are discussed. Numerous shear data ...  Read More

Original Research Paper
Modeling of Minimum Acceptable Target Reserve in Gold Exploration Projects

A. R. Sayadi; M. Yavari; N. Solgi

Volume 17, Issue 67 , February 2008, Pages 38-45


       Exploration projects need considerable investments. These projects are associated with high techno-economical risks. Therefore, Evaluation of exploration potential is necessary. It is determined in primary stages of exploration whether the deposit reserve is not economic or the ...  Read More

Original Research Paper
Geotourism in Chabahar

M. Ahrari rudi; Zh. Shahrokhi khargerdi

Volume 17, Issue 67 , February 2008, Pages 46-55


      Regarding different and beautiful geological features, Chabahar is one of the most important geotouristic sites in Iran. The attractive geological landforms are so spectacular that always attract a lot of tourists to the area. Some of the important geomorphological features are mud-volcano, ...  Read More

Ichnology of Miocene Vertebrate Footprints in the Upper Red Formation, Evan-e-Key Section, East Tehran, Iran

N. Abbassi; A. H. Amini

Volume 17, Issue 67 , February 2008, Pages 56-67


        The Upper Miocene Upper Red Formation in the Evan-e-Key Section is composed of conglomerates, sandstones, mudstones, and thin lenses of evaporates (gypsum). The formation is dominated by gypsiferous mudstones and characterized by fining-up cycles in this area. The whole ...  Read More

Original Research Paper
Petrology, Geochemistry and Tectonomagmatic Setting of the Silijerd Intrusion, Northwest Saveh

H. Ghasemi; A. Ramazani; A. Khanalizadeh

Volume 17, Issue 67 , February 2008, Pages 68-85


          Silijerd intrusion with an age of Late Eocene – Oligocene (39.23.2 Ma) is located in Uromeyeh-Dokhtar magmatic arc, central Iran structural zone, northwest Saveh. This intrusion is composed of a continuous compositional range including: diorite/gabbro, ...  Read More

Original Research Paper
Petrography and Alteration of Chehelkureh Copper Deposit: Mass Balance of Elements and Behavior of REE

M. Maanijou; I. Rasa; D. Lentz

Volume 17, Issue 67 , February 2008, Pages 86-101


       Chehelkureh copper deposit is located in Kuh-e-Lunka area, 120 km NW of Zahedan (SE of Iran). The host rocks of mineralization are intercalated Eocene turbiditic greywackes, siltstones, and shales (flysch). They are folded with N-S trend and the eastern limb of this fold has ...  Read More

Original Research Paper
Estimation of Kinetic Model of Magnesite Dissolution in Nitric Acid

H. Atashy; J. Rahnama-Rad

Volume 17, Issue 67 , February 2008, Pages 102-107


         The effect of temperature, mixer ratio and acid thickness on the rate of magnesite dissolution in nitric acid was investigated in this laboratory research. The result shows dissolution rate increases with rising temperature when the size of particles is reduced. At ...  Read More

Original Research Paper
Vertebrate Fossils Study and Exploration of Maragheh Formation

Z. A. Pur-Abrishami; A. H. Kokabi-Nezhad; G. R. Zare; O. Dabiri

Volume 17, Issue 67 , February 2008, Pages 108-115


         Maragheh informal Formation is widely extended on the Sahand hillside and Maragheh city. Based on lithology and sedimentary facies, Maragheh Formation is divided into two members: lower member in the studied area (Mordagh area - Aghajery) consists of marl, tuff, tuffaceous ...  Read More

Original Research Paper
Investigation of Zefreh Dolomite as a Refractory Raw Material and Preparation of Dolomite Zirconia Bricks

Kh. Tahmasbi Poor; M. Poormoafi

Volume 17, Issue 67 , February 2008, Pages 116-123


         In this study, samples from Zefreh dolomite mine were characterized by X-ray diffraction and microscopic study. Dolomite samples were heated up to 1700ºC to produce doloma. Zircon and zirconia were used for preparation of dolomite – zirconia refractories. ...  Read More

Original Research Paper
Lithostratigraphy, Microbiostratigraphy and Microfacies of the Ilam Formation in Southwestern Khorram Abad

S.H. Vaziri; D. Jahani; M. Safdari; F. Chegeni

Volume 17, Issue 67 , February 2008, Pages 124-139


         The Ilam Formation in southwestern Khorram Abad with a thickness of up to 204 meters consists of uniform limestones with Middle Turonian to Early Campanian age which were deposited in a continuous sedimentation process. In this section, the Ilam Formation has continuous ...  Read More

Original Research Paper
Determination of the Geometrical Configuration of Trajectory in Kan-Karaj Area(Central Alborz) using Multiple Inverse Method

M. Eliassi; S. Ahmadian

Volume 17, Issue 67 , February 2008, Pages 140-149


  Analysis of paleostress history in Kan_Karaj Area is the main object of this research. Paleostress phases were determined and categorized by numerous mesoscale faults containing slickenside lineations .The results were controlled and supported by some other geological features such as orientation of ...  Read More

Original Research Paper
Biostratigraphy of the First and Second Members of Type Section of the Shirgesht Formation in North of Tabas with Special Emphasis on Conodonts

A. Ghaderi; A. Aghanabati; B. Hamdi; J. F. Miller

Volume 17, Issue 67 , February 2008, Pages 150-163


  The Shirgesht Formation is one of the fossiliferous units of Central Iran which in the type section is defined (informally) in the terms of 3 members. This formation is mainly composed of limestone, marl, siltstone, shale and dolomite, conformably overlay on the upper part of the Derenjal Formation with ...  Read More

Original Research Paper
Characterization and Ore Dressing Studies of Kerman Diasporic Bauxite

M. Moazemi; B. Rezai; A. Amini

Volume 17, Issue 67 , February 2008, Pages 164-171


         In this research firstly ore characterization studies from ore dressing point of view have been conducted and then increase in module ratio i.e. ratio of Al2O3 to SiO2 of the bauxite samples from Boolboolieh area of Kerman province investigated by the means of ore dressing techniques. Obtained ...  Read More

Original Research Paper
Overall Slope Stability Analysis of Chadormalu Iron Mine(North Western Wall) by using Empirical, Analytical & Numerical Methods

A. Afsharian; Y. Naeimi; M. Ataei

Volume 17, Issue 67 , February 2008, Pages 172-181


       Slope stability studies is one of the most considerable parameter of safety and economical factors of open pits. Because the pit walls usually consist of different characteristics of lithology and structure, using only one slope for all walls is not enough and reasonable. So ...  Read More

Original Research Paper
Geological Investigations of Main Intrusions of the Central Alborz

M. V. Valizadeh; H. R. Abdollahi; M. Sadeghian

Volume 17, Issue 67 , February 2008, Pages 182-197


       The intrusive bodies of Central Alborz constiute speciale distribution. And they are located near major faults, and also they are accompnied by pyroclastic rocks of the Karaj Formation.Moreover they  display lithological diversity and they occur as sill, lopolith, stock ...  Read More

Original Research Paper
Clay Mineral Study of Pabdeh Formation in Type Section and it´s Comparison with NGS Data from Kupal Oil Field (Well No. 12 & 38)

M. Hosseini-Barzi; R. Alinejad-Kurdi; H. Ghalavand

Volume 17, Issue 67 , February 2008, Pages 198-209


  The calcimeteric analysis of samples from Pabdeh Formation, in type section (north of Dezful embayment subzone), represent a marl and shaly marl lithology. SEM images from these samples represent chlorite flakes with diagenetic origin (transformation of illite to chlorite) and imply the possible existence ...  Read More

Original Research Paper
Geochemistry and Petrogenesis of an Alkaline-Calc Alkaline Volcanic Suite North Central Iran: The Role of Crystal Fractionation and Enrichment Processes in a Back-arc Environment

F. Tutti; S. Yazdani; K. Bazargani-Guilani

Volume 17, Issue 67 , February 2008, Pages 210-223


        South Kahrizak volcanic rocks with Eocene age are located in the north part of Central Iran. These rocks are mainly composed of pyroclastics (tuff and ignimbrites) and lava flows (rhyolite, trachyandesite, basaltic trachyandesite and basalt). Petrographic evidence such as: zoning, ...  Read More