Volume 31 (2020)
Volume 30 (2019)
Volume 29 (2018)
Volume 28 (2017)
Volume 27 (2016)
Volume 26 (2015)
Volume 25 (2014)
Volume 24 (2013)
Volume 23 (2012)
Volume 22 (2011)
Volume 21 (2010)
Volume 20 (2009)
Volume 19 (2008)
Volume 18 (2007)
Volume 17 (2006)
Volume 16 (2005)
Volume 15 (2004)
Volume 14 (2003)
Volume 13 (2002)
Volume 12 (2001)
Volume 11 (2000)
Volume 10 (1999)
Volume 9 (1998)
Volume 8 (1997)
Volume 7 (1996)
Volume 6 (1995)
Volume 5 (1994)
Volume 4 (1993)
Volume 3 (1992)
Volume 2 (1991)
Volume 1 (1990)
Volume 1 (1989)
1. Middle-Late Cambrian acritarchs from the Zardkuh area in the High Zagros Mountains, southern Iran: Stratigraphic and paleogeographic implications

mohammad ghavidel- syooki

Volume 30, Issue 4 , Autumn 2019, , Pages 331-353


  The excellent preservation of the acritarchs, their great abundance, diversity and good stratigraphic control permit establishment of a detailed Middle and Late Cambrian acritarch biozonation. A total of 56 palynomorph species form the basis of 10 local acritarch assemblage zones. Assemblage zones I-II ...  Read More

2. Mineralogy, Geochemistry and Raman Spectroscopy of Multi-Genesis Serpentine Polymorphs of Darepahn Ophiolites

Bahram Bahrambeygi; Hessam Moeinzadeh; Seyed Kazem Alavipanah

Volume 30, Issue 3 , Summer 2019, , Pages 251-269


  The present article pays to some Alpine-Himalayan ophiolites of Late Cretaceous age from Darepahn area in the southern part of Nain-Baft Ophiolite belt. Whole rock processed data clearly shows that the metaperidotite rocks are silica-poor with low CaO, Al2O3, and TiO2 that reflect the predominance of ...  Read More

3. Depositional Environment and Sequence Stratigraphy of the Oligocene-Miocene Deposits North and East of Dehdasht, Izeh Zone, Zagros Basin, Iran

Reza Moussavi-Harami; Farrokh Naseri-Karimvand; Asadollah Mahboubi; A. Ghabeishavi; Ruhollah Shabafrooz

Volume 30, Issue 2 , Spring 2019, , Pages 143-166


  In this study, four well-exposed outcrops of the Asmari Fm in the southeastern part of the Izeh Zone of the Zagros Mountains were measured and sampled. In this region, the Asmari Fm is Oligocene to Early Miocene in age as determined by large benthic foraminifera. Based on depositional geometries, biogenic ...  Read More

4. An Integrated Geophysical Approach for Porosity and Facies Determination: A Case Study of Tamag Field of Niger Delta Hydrocarbon Province

Emele Uduma Okpogo; Ifenyinwa Atueyi Obiageli; Chukwuemeka Patrick Abbey

Volume 30, Issue 2 , Spring 2019, , Pages 167-176


  Petro physics, rock physics and multi-attribute analysis have been employed in an integrated approach to delineate porosity variation across Tamag Field of Niger Delta Basin. Gamma and resistivity logs were employed to identify sand bodies and correlated across the field. Petro physical analysis was ...  Read More

5. Fault Strike Detection Using Satellite Gravity Data Decomposition by Discrete Wavelets: A Case Study from Iran

ata eshaghzadeh; A. Dehghanpour; Roghayeh Alsadat kalantari

Volume 30, Issue 1 , Winter 2019, , Pages 41-50


  Estimating the gravity anomaly causative bodies boundary can facilitate the gravity field interpretation. In this paper, 2D discrete wavelet transform (DWT) is employed as a method to delineate the boundary of the gravity anomaly sources. Hence, the GRACE’ satellite gravity data is decomposed using ...  Read More

6. Sediment-Hosted Copper Mineralization in Bavanat Region, Southern Sanandaj-Sirjan, Iran

Kamal Noori Khankahdani; Mehrdad Karimi

Volume 30, Issue 1 , Winter 2019, , Pages 61-75


  Sedimentary Copper mineralization has been observed in Monj and Jolany locations in Bavanat (Sanandaj – Sirjan metamorphic belt). According to current study, the host rocks for copper mineralization in this area are green sandstones, generally in subarkose and arkose groups. Age of these sandstones ...  Read More

7. Late Barremian-Early Aptian Ammonites from the Tirgan Formation, Kopet-Dagh Sedimentary Basin, NE Iran

Morteza Taherpour Khalil Abad; Seyed Hamid Vaziri; Masoumeh Molaei; Seyed Naser Raisossadat

Volume 30, Issue 1 , Winter 2019, , Pages 51-59


  During the recent field research on the Tirgan Formation in the west of Kopet-Dagh sedimentary basin, ammonite assemblages were obtained from the carbonate strata of this formation. This new finding is important for stratigraphical purpose. In this research, 3 genera belong to Heteroceras, Deshayesites ...  Read More

8. Petrology, Geochemistry and Tectonomagmatic Evolution of Hezar Igneous Complex (Rayen- South of Kerman- Iran): the First Description of an Arc Remnant of the Neotethyan Subduction Zone

M. Noorizadeh; A. Moradian; H. Ahmadipour; M. R. Ghassemi; J. F. Santos

Volume 29, Issue 4 , Autumn 2018, , Pages 341-359


  The Hezar Igneous Complex (HIC) in the south-eastern part of Urumieh-Dokhtar magmatic arc, is the most prominent magmatic feature in the Kerman Porphyry Copper Belt, that understanding magmatic evolution of which may shed light on the tectonomagmatic development of this less-studied part of an important ...  Read More

9. Application of Mixture Tuned Matched Filtering on ASTER Data for Hydrothermal Alteration Mapping Related to Porphyry Cu Deposits in Jabal-Barez Ranges, Kerman Copper Belt, Iran

S. J. Yousefi; H. Ranjbar; S. Alirezaei; S. Dargahi

Volume 29, Issue 3 , Summer 2018, , Pages 271-280


  The study area is located in Jabal-Barez Ranges, southeastern part of Kerman Copper Belt (KCB), where the porphyry copper mineralization such as Kerver occurs. This article deals with the enhancement of hydrothermal alteration minerals for exploration of porphyry Cu mineralization, and differentiates ...  Read More

10. Hydrogeochemical Evolution of Groundwater Resource in an Arid Region of Southeast Iran (Ravar plain–Kerman province)

A. Qishlaqi; M. Abdolahi; A. Abbasnejad

Volume 29, Issue 3 , Summer 2018, , Pages 253-269


  This study was carried out in the Ravar plain, a typical arid zone in southeastern Iran, with the objectives of evaluating hydrochemical quality of the groundwater resources and identifying the processes that modify the groundwater composition. Groundwater samples were collected from representative wells ...  Read More

11. Probabilistic View of Occurrence of Large Earthquakes in Iran

M. Nemati

Volume 29, Issue 3 , Summer 2018, , Pages 241-252


  In this research seismicity parameters, repeat times and occurrence probability of large earthquakes are estimated for 35 seismic lineaments in Persian plateau and the surrounding area. 628 earthquakes of historical time and present century with MW>5.5 were used for further data analysis. A probabilistic ...  Read More

12. Petrography, Major and Trace Elemental Geochemistry of the Ordovician-Silurian Siliciclastics in North of Tabas Block, Central Iran: Implications for Provenance and Paleogeography

E. Khazaei; M.H. Mahmoudy-Gharaie; A. Mahboubi; R. Moussavi-Harami; J. Taheri

Volume 29, Issue 2 , Spring 2018, , Pages 129-142


  The upper part of Shirgesht (UPS) and lower part of Niur (LPN) formations (Ordovician-Silurian) consist of sandstone, shale and limestone, respectively. The petrography and geochemical analysis conducted to evaluate provenance of siliciclastic deposits in order to understand the paleogeography of Central ...  Read More

13. Petrography and Geochemistry of the Upper Jurassic Siliciclastic Rocks Equivalent to the Mozduran Gas Reservoir in the Eastern Kopet-Dagh Basin, NE Iran

H. Zand-Moghadam; M. Jafarzadeh; R. Moussavi-Harami; A. Mahboubi

Volume 29, Issue 2 , Spring 2018, , Pages 157-171


  In this research, petrographic and geochemical (major and trace elements) characteristics of siliciclastic rocks of the Mozduran Formation in the eastern Kopet-Dagh Basin have been carried out in order to reveal their provenance such as source area paleoweathering, parent rock composition and tectonic ...  Read More

14. Estimation of Plunge Value in Single- or Multi-Layered Anisotropic Media Using Analysis of Fast Polarization Direction of Shear Waves

K. Latifi; A. Sadidkhouy; M. R. Ghassemi

Volume 29, Issue 2 , Spring 2018, , Pages 143-156


  Estimation of the fast polarization direction of shear seismic waves that deviate from horizontal axis is a valuable approach to investigate the characteristics of the lower crust and uppermost mantle structures. The lattice preferred orientation of crystals, which is generally parallel to the downward ...  Read More

15. Origin of Lherzolitic Peridotites in Ab-Bid Ultramafic Complex (Hormozgan Province); Products of Mantle Metasomatism or Partial Melting Processes?

M. Mohammadi; H. Ahmadipour; A. Moradian

Volume 29, Issue 1 , Winter 2018, , Pages 53-65


  Lherzolite is one of the main units in the Ab-Bid ultramafic complex from Esfandagheh-HadjiAbad coloured mélange (South of Iran). The complex contains harzburgite, dunite, lherzolite and pyroxenite dykes and the lherzolites mainly occur in the margins. In the field, lherzolites occur as weakly ...  Read More

16. Chronostratigrahy of Acritarchs and Chitinozoans from upper Ordovician Strata from the Robat-e Gharabil Area, NE Alborz Mountains, Northern Khorassan Province: Stratigraphic and Paleogeographic Implications

M. Ghavidel-Syooki; S. Borji

Volume 29, Issue 1 , Winter 2018, , Pages 35-51


  The Palaeozoic rock units mainly, Ghelli, Niur, Padeha, Khoshyeilagh and Mobark formations are well-exposed in the north of Robat-e Gharabil village. 116 out of 157 surface samples were analyzed to determine aged relationships of Ghelli Formation. The samples of Ghelli Formation are dominated by acritarchs ...  Read More

17. Study of Events and Phases in Robat-e Zengejeh Area (Southwestern Bardaskan)

M. Jamshidibadr; N. S. Faramarzi

Volume 28, Issue 4 , Autumn 2017, , Pages 349-358

  Robat-e Zengejeh rocks affected by a variety of events began from Precambrian. This research studied preserved effects of the events. Regional metamorphism is the oldest event in this rocks include schist, amphibolite and orthogneiss, that reached up to amphibolite facies. After this regional metamorphism, ...  Read More

18. First Record of Aptian- Cenomanian Brachiopods from the Vezk Section (South of Yasuj, Iran)

T. Binazadeh

Volume 28, Issue 4 , Autumn 2017, , Pages 337-347

  Brachiopod faunas from the Aptian- Cenomanian Vezk section in southwesternIran comprise ten species in six genera, namely Sellithyris cenomanensis, Sellithyris tornacensis, Sellithyris phaseolina, Phaseolina phaseolina, Tropeothyris sp., Concinnithyris subundata, Kingena arenosa, Cyclothyris difformis, ...  Read More

19. Pseudophillipsia (Carniphillipsia) (Trilobite) from the Permian Jamal Formation, Isfahan, Iran

H. Ameri; M. Yazdi; A. Bahrami

Volume 28, Issue 4 , Autumn 2017, , Pages 325-336

  The aim of this study is to bridge a gap in the existence of Trilobites in the marine Permian successions of Iran by exploring a stratigraphic section of the Permian in Jamal Formation (Dizlu section).  Based on comprehensive field studies and laboratory investigations three Trilobite specimens ...  Read More

20. Estimating the Mechanical Properties of Travertine Building Stones Due to Salt Crystallization Using Multivariate Regression Analysis

A. Jamshidi; M.R. Nikudel; M. Khamehchiyan; A. Zalooli; H. Yeganehfar

Volume 28, Issue 3 , Summer 2017, , Pages 231-241

       Salt crystallization is one of the most powerful weathering agents that may cause a rapid change in the mechanical properties of stones, and thus limit their durability. Consequently, determining the mechanical properties of stones due to salt crystallization is important for natural ...  Read More

21. Urgonian Type Microfossils of the Dariyan Formation, from Southwest of Iran (Northeast of Shiraz)

M. Yavari; M. Yazdi; H. Ghalavand; M. H. Adabi

Volume 28, Issue 3 , Summer 2017, , Pages 255-265

  The Lower Cretaceous Carbonate deposits of the Dariyan Formation of the HighZagros Belt are mainly composed of thick to medium bedded limestone. These depositscontain abundant and diversified benthic foraminifera which have been recovered fromcarbonate rocks. A rich assemblage of microfossils with characteristic: ...  Read More

22. Characterizing Tourmaline in Metapelitic Schists from The Gasht Area, North Iran and Boron Source in Metamorphic Fluids

M. Moazzen; R. Michaeli; M. Ahangari; U. Altenberger

Volume 28, Issue 3 , Summer 2017, , Pages 243-253

  Metapelitic rocks in the Gasht area include micaschist, kyanite schist, andalusite schist, garnet schist, staurolite schist, cordierite schist and sillimanite schist. Tourmaline occurs as accessory mineral in all of these rock types. These schists are metamorphosed regionally and are affected by contact ...  Read More

23. Improving Petrophysical Interpretation of Conventional Log ‎by Determination of Real Bed Boundaries

F. Khoshbakht; M. R. Rasaie; A. Shekarifard

Volume 28, Issue 2 , Spring 2017, , Pages 147-154

  Proper determination of bed boundaries in layered reservoirs is vital ‎for accurate petrophysical interpretation of conventional logs. In the ‎wellbore, logs continuously measure physical properties of reservoir ‎while the properties change stepwise. This continuous representation ‎of ...  Read More

24. High Potash Volcanic Rocks and Pyroclastic Deposits of Damavand Volcano, Iran, an Example of Intraplate Volcanism

M. Mortazavi

Volume 28, Issue 2 , Spring 2017, , Pages 155-168

  Damavand is a fascinating dormant stratovolcano, 60 km to the ENE of Tehran located in the Alborz Mountains. Damavand volcanic products consist of lava flows and pyroclastic fall, flow and surge deposits from different eruption cycles. The volcanic rocks ranges from trachyandesite to trachyadacite and ...  Read More

25. The Exploration Significance of Ag/Au, Au/Cu, Cu/Mo, (Ag×Au)/(Cu×Mo) Ratios, Supra-ore and Sub-ore Halos and Fluid Inclusions in Porphyry Deposits: A Review

H. Atapour

Volume 28, Issue 2 , Spring 2017, , Pages 133-146

  This paper documents the exploration significance of Ag/Au, Au/Cu, Cu/Mo and (Ag×Au)/Cu×Mo) ratios of the supra-ore and sub-ore halos versus fluid inclusion evolution for 24 Cu, 6 Cu- Mo and 10 Cu-Au porphyry deposits worldwide. The ratios are based only on the economic and mineralized hypogene ...  Read More