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)
Volume 16 (2007)
Investigating the U-Pb zircon data according to the mineral chemistry, Boneh-shurow metamorphic complex, Saghand, Central Iran

Leila Maleki; Nematollah Rashid Nejad-e-Omran; Abdolrahim Houshmandzadeh; John Cottle

Volume 33, Issue 2 , June 2023, , Pages 155-168


  In this article, metabasic and gneissic rocks of Gelmandeh and Zamanabad mountain (Boneh-Shurow complex, Saghand region) have been used for U-Pb dating. Analyses of zircon crystals yielded concordant U–Pb ages with weighted mean 206Pb/238U ages of 545.4 ±3.6 Ma (MSDW=1.7) for garnet amphibolite, ...  Read More

Stratigraphy and Palaeontology
Fusulinids biostratigraphy of Zaladou formation (Gzhelian-Asselian) from Central Iran (Ozbak Kuh), Shishtu section

Ali Jalali; Hamed Yarahmadzahi; Mehran Arian; Abdollah Saidi; Seyed Mohsen Aleali

Volume 33, Issue 2 , June 2023, , Pages 283-298


  The Shishtou section is located in the north of Tabas Ghezelin and Asselian sequences of Zaladou formation with 60 m thickness are divided into five units, includes sandstone, limestone, shale, sandy limestone and limestone. The lower boundary of the Gzhelian deposits with disconformity on top of the ...  Read More

Sr-Nd-Pb isotope and geochemistry of Anomaly 21 plutonic rock, Bafq metallogenic district (Central Iran): the evidence of Late Neoproterozoic magmatism

Niloofar Nayebi; Dariush Esmaeily; Soroush Modabberi; Ryuichi Shinjo

Volume 33, Issue 1 , February 2023, , Pages 143-160


  Anomaly 21A, as a part of Bafq iron-apatite ore metallogenic district, is located in Central Iran, and encompasses wide spectrume of igneous, sedimentary and metamorphic rocks. The igneous rocks that show narrow geochemical variations and dominantly plot in the monzonite to monzodiorite fields, are ...  Read More

Geochemistry and petrogenesis of intrusive rocks of Chadormalu deposit; an implication on whole rock geochemistry and Sr-Nd-Pb isotopes

Niloofar Nayebi; Dariush Esmaeily; Sourosh Modabberi; Ryuichi Shinjo; Reza Deevsalar; Bernd Lehmann

Volume 32, Issue 4 , December 2022, , Pages 29-42


  Sr-Nd-Pb isotopes and whole-rock geochemical analyses were carried out on plutonic rocks of the Chadormalu district to constrain the magmatic history of the Cadomian orogeny of the northern Gondwana margin during Late Precambrian–Early Paleozoic times. Despite the similarities in the geochemical ...  Read More

Stratigraphy and Palaeontology
Micro biostratigraphy and paleo environment of Oligo-Miocene deposits in north of central Iran

shahram navavajary; Iraj Maghfouri Moghaddam; Ali Reza Shahidi; Hamid Nazari

Volume 31, Issue 1 , June 2021, , Pages 37-50


  Oligo-Miocene rocks are deposited between Pyrenean and Pasadenian orogenic phases. This rocks in central Iran back arc deposits are named Qom formation. There are well developed outcrops of Qom formation at the North of Central Iran zone. In order to study microbiostratigraphy of the formation, Three ...  Read More

Tectono-magmatic setting of the Albite-bearing metasomatite of the Ghoghart magnetite-apatite ore deposits, Northeast Bafq, Central Iran

kiamars hosseini; Majid Shahpasandzadeh

Volume 30, Issue 118 , January 2021, , Pages 81-94


  The Late Neoproterozoic-Early Cambrian albite-bearing metasomatite, rhyolites and rhyodacites predominantly constitute the host rocks of the Choghart magnetite-apatite deposit in Central Iran. The geologic evidences show three types of albites in the host albite-bearing metasomatite. The performed mineralogical ...  Read More

Structural investigation of ductile deformation in metamorphic rocks around the Anarak- Central Iran

mohammad khalaj

Volume 30, Issue 117 , December 2020, , Pages 101-110


  Anarak metamorphic complex located east of Nain city. Based on geological, chronological and paleomagnetical data, the complex consists of different metamorphic units from different varity of source. This metamorphic complex also composed of ophiolitic bodies which crop out in the complex as thrust sheets. ...  Read More

Petrography, geochemistry and tectonic setting of mafic dyke swarms of Zrigan granitoid, north of Bafq (Central Iran)

Gholamreza Tajbakhsh

Volume 30, Issue 117 , December 2020, , Pages 175-188


  Mafic dyke swarms of the Zarigan granitoid in the north of Bafq have intruded the Lower Cambrian volcanic-sedimentary sequence of central Iran. These dykes are lithologically classified as gabbro-diorite and alkali gabbro. The alkaline gabbros are younger and penetrate higher horizons. Geochemically, ...  Read More

Economic Geology
Nohkuhi volcanogenic massive sulfide deposit: a sample of Bathurst- type mineralization in northwest of Kerman

Amir Pakizeh; Fardin mousivand; Abdorrahman Rajabi; Sajjad Maghfouri

Volume 29, Issue 115 , June 2020, , Pages 111-122


  The Nohkuhi copper deposit located at 40 Km Northwest of Kerman, occurred in the Central Iran structural zone (Bafq- Posht-e- Badam block), within Late Precambrian-Early Cambrian volcano-sedimentary sequences. Host sequence of mineralization consists of dominantly black shale, sandstone and dacitic lava ...  Read More

Stratigraphy and Palaeontology
Biostratigraphy and paleoecology research on Qom Formation based on microfossils at East of the Qom

k. Khaksar

Volume 29, Issue 115 , June 2020, , Pages 187-198


  This research has described for determinate of Oligo-Miocene Foraminifers at the Do Baradar section. The main aim project was scrutiny age of this Formation and Paleoecology distribution lot of basins have created with big streams between Zagros and Alborz with Central Iran. Final transgressive sea on ...  Read More

Petrology, geochemistry and Sr-Nd isotopic composition of the metabasic rocks of Boneh shurow metamorphic complex, East of Saghand, Central Iran

Leila Maleki; Nematollah Rashidnejad Omran; Abdolrahim Houshmandzadeh

Volume 29, Issue 114 , December 2019, , Pages 185-196


  Boneh shurow metamorphic complex is located in the east of Saghand area, Central Iran. This complex consists of quartz-feldspatic gneiss (mafic minerals < 5%), biotite-amphibole gneisses, metabasics rocks, schists, subordinate dolomitic marble and quartzite interlayers and mafic and felsic magmatic ...  Read More

Crustal velocity structure and Moho discontinuity depth beneath center of Iran

Afsaneh Nasrabadi; Fateme Azimi; MohammadReza Sepahvand

Volume 28, Issue 111 , May 2019, , Pages 43-52


  Crustal velocity structure and Moho discontinuity depth have investigated beneath 7 the broadband seismic stations, AFRZ, TKDS, TPRV, TNSJ, ANAR, KRSH of the Iranian Seismological Center (ISC) and YZKH of Iranian National Seismic Network (INSN) located in the center of Iran by joint inversion of receiver ...  Read More

Economic Geology
Geology, mineralization, mineralogy and genesis of Pirgheshlagh Cu-Zn-Pb deposit, NW Zanjan

Mahin Zolfaghari; Ghasem Nabatian; Amir Morteza AzimZadeh; Maryam Honarmand; P. Azizi

Volume 28, Issue 109 , September 2018, , Pages 133-148


  Pirgheshlagh Cu-Zn-Pb deposit is located in the Central Iranian zone, north-east of the Mahneshan in the Zanjan province. The Kahar Formation with Precambrian age is the oldest Formation in the area which cutted by the granitic dykes. The Pirgheshlagh Cu-Zn-Pb mineralization occurred mainly as tabular-shape ...  Read More

Investigation on the genesis of the iron oxide- apatite ± REE deposits of the Bafgh-Saghand district (Central Iran), based on oxygen isotope studies

S. A. Majidi; M. Lotfi; M. H. Emami; N. Nezafati

Volume 28, Issue 109 , September 2018, , Pages 237-244


  The metallogenic zone of Bafgh-Saghand in central Iran hosts huge low-titanium iron oxide-apatite (IOA) deposits (also called Kiruna type iron deposits) with more than 1500 Million tons grading 55% iron. The genesis of these deposits including Chadormalu, Choghart, She-Chahun, and Esfordi has long been ...  Read More

Geometric- kinematic analysis of the Kalmard fault zone, north of Ozbak-Kuh, central Iran

Mohammad Moumeni Taromsari; Maryam Dehbozorgi; Reaza Nozaem; Ali Yassaghi

Volume 28, Issue 109 , September 2018, , Pages 245-254


  Kalmard fault is considered as one of the fundamental faults in central Iran zone. The Ozbak Kuh mountains with a NE-SW strike are located in central Iran in the Kalmard fault zone. Hence, analyze the folds and faults in this deformed zone can aid in the understanding of structural evolution of this ...  Read More

Economic Geology
Hydrothermal alteration in the Gazestan magnetite-apatite deposit and comparison with other Kiruna-type iron deposits in the Bafq district, Central Iran

Rasoul Sepehrirad; Saeed Alirezaei; Amir Morteza Azimzadeh

Volume 27, Issue 108 , September 2018, , Pages 257-268


  The Gazestan magnetite-apatite deposit is hosted within an upper Proterozoic-lower Cambrian volcanic-sedimentary sequence, known as Rizu series, in the Bafq district, Central Iran. The Gazestan deposit occurred in intensely altered felsic-intermediate subvolcanic and volcanic host rocks. Field observations, ...  Read More

Geometric and kinematic analysis and of Derenjal Mountain’s faults, eastern block of Kalmard fault (Central Iran)

R. Samadi Moghadam; R. Nozaem; M. Dehbozorgi; M. Mohajjel

Volume 27, Issue 107 , June 2018, , Pages 75-86


  Derenjal Mountains with NE-SW trend, is located in Central Iran, in northwest of Tabas block and in eastern block of Kalmard fault. In this region, the Paleozoic formations (Cambrian to Devonian) have been exposed and surrounded by Neogene and Quaternary deposits. Volcanic rocks of Cambrian limited to ...  Read More

Basic magmatism in the extentional back-arc basin of the Lower-Middle Jurassic on the Northern edge of Central Iran-South of Eastern Alborz zones, Shahrood-Damghan

H. Ghasemi; M. Rostami Hossuri; M. Sadeghian

Volume 27, Issue 107 , June 2018, , Pages 123-136


  The Lower Jurassic basin of northern margin of central Iran structural zone and south of eastern Alborz in Semnan province, contains igneous rocks with basic composition, belonging to early stages of occurrence and development of an immature extensional back arc basin at this time. These basic igneous ...  Read More

Paleoenvironmental study of the marly beds of the Farrokhi Formation (Central Iran) based on their ostracods content

Mohsen Allameh

Volume 27, Issue 106 , March 2018, , Pages 15-24


  The Farrokhi Formation is the youngest sedimentary unit in Upper Cretaceous of Khur and Biabanak area. Its lithology is mainly consists of limestone, marl, marly limestone with intercalations of fossiliferous limestone. For environmental interpretation of this formation, 23 specimens of marly beds are ...  Read More

Palynofacies and paleoenvironment of marl segment in Farokhi formation (Central Iran)

M Allameh; B Torabian

Volume 26, Issue 101 , December 2017, , Pages 57-68


  Farrokhi Formation is a Cretaceous rock unit in Central Iran that lithologically contains lime, marl and marly lime accompanied by layers of fossiliferous limestones. This formation lays conformably over the Haft-Tuman Formation, while its upper boundary is disconformable with Chupanan Formation. In ...  Read More

Facies analysis in transitional from Ordovician deposits (upper part of Shirgesht formation) to Silurian (lower part of Niur formation) in SW Kashmar, North of Tabas block

E Khazaei; M.H Mahmudy Gharaie; A Mahboubi; J Taheri

Volume 26, Issue 101 , December 2017, , Pages 111-126


  The studied section in SW Kashmar located in Tabas block of central Iran sedimentary - structural zone. According to field observations and petrography, two sets of siliciclastic and carbonate facies were distinguished. Three lithofacies were identified based on the field parameters such as lithology, ...  Read More

Mineral chemistry and petrogenesis of metabasites of metamorphic - igneous Shotor-Kuh complex (SE Shahrood) an indicator for evolution of intracontinental extensional basins of late Neoproterozoic

S. Shekari; M. Sadeghian; M. Zhai; H. Ghasemi; Y. Zou

Volume 27, Issue 105 , December 2017, , Pages 167-182


  Metamorphic - igneous Shotor-Kuh complex is located in the 80 km of SE Shahrood and in the northern edge of the central Iran structural zone. This complex includes a wide lithological composition range such as metapelite (micaschists and gneisses), metapsammites, metabasites (amphibolite and garnet amphibolite), ...  Read More

The genesis of iron oxide-apatite (IOA) deposits: evidence from the geochemistry of apatite in Bafq-Saghand district, Central Iran

S. A. Majidi; M. Lotfi; M. H. Emami; N. Nezafati

Volume 27, Issue 105 , December 2017, , Pages 233-244


  The Origin of Iron Oxide-Apatite deposits (IOA) with low Ti or Kiruna type deposits has long been a matter of debate. In this case, several provenances have been proposed for these deposits which include: magmatic, magmatic-hydrothermal, hydrothermal, banded iron formations, and sedimentary-exhalative. ...  Read More

Stratigraphy, Paleontology and Sedimentary Environment of Upper Cretaceous rows, Bahar Section South Esfahan (Central Iran) and its Comparison with Poshte jangal anticline (South east of Lorestan Province)

R. Haftlang; M. Afghah; S. A. Aghanabati; M. Parvaneh Nezhad Shirazi

Volume 26, Issue 104 , September 2017, , Pages 309-318


  Lithological and biological Sequences of Cretaceous in Bahar section, Located in South Esfahan (147 m. true thickness) include grayish olive green pencil- like shales containing Budantysras Ammonites (Albian) interbedded with limy shales. which are covered by glauconitic Sandy Limestone (Early Turonian) ...  Read More

Petrology, geochemistry and geochronology of SW Mayamey granitoids

M. Sadeghian; S. H. Hosseini; A. Hemmati; S. Shekari

Volume 26, Issue 103 , June 2017, , Pages 41-60


  Granitoid plutons of SW Mayamey (60 Km east of Shahrood), located at the most northern margin of the central Iran structural zone, have granite composition (in general) and calk alkaline and peralouminous nature. In spite of coverage of these granitoids by Late Triassic – Early Jurassic sedimentary ...  Read More