Volume 33 (2023)
Volume 32 (2022)
Volume 31 (2021)
Volume 30 (2020)
Volume 29 (2020)
Volume 28 (2019)
Volume 27 (2018)
Volume 26 (2017)
Volume 25 (2016)
Volume 24 (2015)
Volume 23 (2014)
Volume 22 (2013)
Volume 21 (2012)
Volume 20 (2011)
Volume 19 (2010)
Volume 18 (2009)
Volume 17 (2008)
Original Research Paper
Microstructural Evolution of the Mantle Lithosphere in the Khoy Ophiolites - NW of Iran

M. Rahgoshay; I. Monsef; H. Shafaii Moghadam; M. Mohajjel

Volume 16, Issue 63 , March 2007, Pages 2-17


  Petrofabric, structural and geochemical study of the ultramafic tectonites in the Khoy ophiolitic complex suggest that these tectonites including low-temperature NW-SE shear zones cut the high-temperature to medium-temperature NE-SW mantle flow direction. Microstructures in these tectonites, record a ...  Read More

Original Research Paper
Investigation of Manganese Mineralization in Jokandy,Southwest of Hashtrood

F. Malekghasemi; V. Simmonds

Volume 16, Issue 63 , March 2007, Pages 18-29


  The purpose of this study is to determine the genesis of the manganese occurrences around the Hashtroud city, with special regard to Idahlu- Jokandy region. In this region Mn mineralization is sparse and rather extensive. Mineralization has originated from hot springs and precipitated on the earth surface. ...  Read More

Original Research Paper
Depositional Environments & Sequence Stratigraphy of the Kazhdomi and Sarvak Formations in the Northwest of Fars Province, Southwest Iran

H. Asilian Mahabadi; Y. Lasemi

Volume 16, Issue 63 , March 2007, Pages 30-39


  The Kazhdomi and Sarvak Formations (Bangestan Group) are mainly composed of carbonate rocks. In order to study facies, depositional environments and sequence stratigrphy of these formations in the northwest of FarsProvince, 4 stratigraphic sections including Namak Kangan, Khartang, Khormonj (Coastal ...  Read More

Original Research Paper
Sag Ponds on Tabriz Fault: Landforms Produced by Active Tectonics

D. Mokhtari

Volume 16, Issue 63 , March 2007, Pages 40-49


       Tabriz fault, oriented NW to SE, on its NW continuation that includes Mishow northern fault, is a right- lateral strike-slip fault and one of the most seismically active zones in Azerbaijan of Iran. Studies on different parts of this fault indicate that there are numerous geomorphologic ...  Read More

Original Research Paper
Petrography, Geochemistry, Genesis and Tectonic Setting of Bibi Maryam Granitoid (Afzal Abad-Nehbandan)

S. S. Mohammadi; M. Vossoughi Abedini; M. Pourmoafi; M. H. Emami; M. M. Khatib

Volume 16, Issue 63 , March 2007, Pages 60-71


  Bibi Maryam Granitoid body with 5 km2 exposure area is located in the east Iranian ophiolite mélange belt in Sistan suture zone. This intrusive body consists of tonalite- quartzdiorite and granodiorite. The main mafic minerals are hornblende and biotite in quartzdiorite-tonalite. Existence of ...  Read More

Original Research Paper
Paleoecology and Biozonation of Late Paleocene to Early Miocene Benthic Foraminifers in North & South East Shiraz

Kh. Khosrotehrani; M. Afghah; V. Ahmadi

Volume 16, Issue 63 , March 2007, Pages 50-69


  In this research, two stratigraphic sections were chosen from the late Paleocene to early Miocene (Jahrum  and Asmari Formations). These sections includes Sadra and Dodaj plus 645 meters of late Paleocene to early Miocene scdiments. For this investigation 360 thin sections were prepared and 12 samples ...  Read More

Original Research Paper
Iron Removal studies of Low Grade Diasporic Bauxite by Using Thermochemical Treatment

M. Moazemi Goodarzi; B. Rezaei; A. Amini

Volume 16, Issue 63 , March 2007, Pages 72-76


  In this paper, iron removal studies on high iron diasporic bauxite by thermochemical treatment was investigated for the first time. For this purpose, bauxite samples were calcined in temperatures between 600 and 1100°C and then leached with hydrochloric acid. Obtained results revealed, in spit of ...  Read More

Original Research Paper
Stratigraphy of the Upper Devonian Rocks in the Kalariz Section

S. M. Hosseini-Nezhad; M. Yazdi; M. Ghobadi-Pour; H. Gholamalian

Volume 16, Issue 63 , March 2007, Pages 78-85


        Geirud formation deposits of Kalariz in the Eastern Alborz start with a relatively thick sequence of sandstone, shale, and red, white and brown colored siltstone changing into yellow dolomitic layers, fossiliferous limestone and shaly or marly limestone. This formation ...  Read More

Original Research Paper
Investigation and Modeling of Joints Dipping Effects on Drilling Rate in Open Pit Mines

S. H. Hoseinie; H. Aghababaei; Y. Pourrahimian

Volume 16, Issue 63 , March 2007, Pages 86-92


       Drilling is one of the most expensive stages of open pit mining and has more complexity. In drilling process many parameters influence simultaneously, where studying each parameter requires recognition of the effects of the characteristics of the rock mass and its material. In ...  Read More

Original Research Paper
Petrography and Joint Study of Bisotoun Area, Implications for Deciphering Factors Controlling Damages on Bisotoun Iscription

H. Mohseni; S. Khodabakhsh; A. H. Sadr; F. Aliani

Volume 16, Issue 63 , March 2007, Pages 92-96


  Bisotun inscription located on the mid-way of Hamedan- Kermanshah road (40 km to Kermanshah city), is carved on limestone cliffs exposed in the area. Dissolution of the inscription caused serious damage to the most important heritage of the country. The area comprises massive gray limestones of the Lower ...  Read More

Original Research Paper
Stratigraphy and Micropaleontology of the Permian Rocks in NW Iran

R. Shabanian; Kh. Khosrow ‏Tehrani; I. Momeni

Volume 16, Issue 63 , March 2007, Pages 98-109


  Various stratigraphical sections of the Permian rocks in the northwest of Iran (Azerbaijan) shows that this sequence consists of Doroud, Ruteh, and Nesen formations in the southern flanks and Doroud, Surmaq , Julfa and Ali-Bashi formations in Zal and Illanlu sections. The analysis and study of forminifera ...  Read More

Original Research Paper
Lithfacies Analysis and Depositional Model of Lateshur River,South East Tehran

M. Khoddami; A. Mahboubi; R. Moussavi-Harami; S. Feiznia

Volume 16, Issue 63 , March 2007, Pages 110-123


  The Lateshur Watershed is a part of Central Iranian drainage basin located northeast of the city of Pakdasht in northeastern TehranProvince. This watershed has an elongate form and its surface area is more than 22.2 square kilometer. It is a part of central Alborz zone and geologically is composed of ...  Read More

Original Research Paper
Estimation of Shear Wave Attenuation for Bam Earthquake, Strong Motion Records, Using Singular Value Decomposition

H. Ghasemi; E. Zabihi; A. Roshandel Kahoo; M. Zare

Volume 16, Issue 63 , March 2007, Pages 124-129


  Strong motion records from the 2002 Bam Earthquake are used to investigate the shape of attenuation function in several frequencies ranging between 0.8 to 18 Hz.  Amplitude spectra of the records are inverted to find source scaling factor and attenuation parameters using Singular Value Decomposition ...  Read More

Original Research Paper
Modify of Eugster & Hardie Brine Evolution Flow Diagram in the Base of Brine of Maharlou Lake

F. Fayazi; M. Nahkaei; R. Lak

Volume 16, Issue 63 , March 2007, Pages 130-139


        Maharlou lake located in southwest of Iran is an intra-continental sedimentary basin. Its area is about 280 km2 extended with an average water depth of 1.5 m during wet seasons. The water level in the lake is controlled by several factors such as runoff volume from Maharlou catchment, ...  Read More

Original Research Paper
Local and Marginal Mineralogy of Alteration Haloes around Mineralized Veins of Masjeddaghi Area, Jolfa

A. Akbarpour; A. Rasa; M. Mehrpartou

Volume 16, Issue 63 , March 2007, Pages 140-153


  The Masjeddaghi area is a part of Alborz-Azarbaijan Zone and located in the Jolfa 1:100000 geological map sheet. The oldest rock units cropped out widely in the south and northeast of the area belong to the Eocene flysch-type sediments. The other outcrops consist mainly of volcanic rock complex of andesites ...  Read More

Original Research Paper
Mineralogical-Geochemical characteristics of Potassic Granitoid in regard with other Granitoid in Kal-e Kafi complex (NE. Anarak )

J. Ahmadian; M . H. Emami; M. R . Ghorbani; M . Murata

Volume 16, Issue 63 , March 2007, Pages 154-163


       Kal-e Kafi granitoid complex is a part of Central Iranian structural zone called Yazd block. This complex is composed of a wide spectrum of plutonic rocks ranging from gabbro to alkalike granite with age range of Upper Eocene-Lower Oligocene. Potassic granitoid shows geochemical ...  Read More

Original Research Paper
Lithofacies, sedimentary environment and provenance of mixed siliciclastic- carbonate- evaporate depositions of Asmari Formation in Ahwaz oil field with reference to mixing mechanisms

M. Husseini Barzi; M. Jafarzadeh

Volume 16, Issue 63 , March 2007, Pages 164-182


  Petrofacies analyses of Asmari Formation carried out on thin sections, obtained from oil wells of number 11, 85 and 89 in Ahvaz oil field, show 5 carbonate-evaporate microfacies associations (related to a carbonate ramp) and 2 siliciclastic petrofacies. Point counting data plotted on Qt93.34F4.10Lt2.59 ...  Read More

Original Research Paper
Mineralogy of Shampoo-clay Deposit in Tafresh Area, Central Province

B. Rafiei; A. Amini Manesh

Volume 16, Issue 63 , March 2007, Pages 180-183


  Mineralogy of clay deposits named Gel-E-Sarshour, mainly mined in CentralProvince, Tafresh area, has been studied. This material is mined from Oligocene Lower Red Formation in wells up to 30 m depth. Clay layers have different thicknesses from 1 cm to 2 m in different parts. It comes in olive green and ...  Read More