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)
OIB-like Alkaline Gabbro of CheshmehGhassaban-Hamedan: Implications of Middle Jurassic Neo-Tethys Ocean Ridge Subduction, Sanandaj-Sirjan Zone

Fahollah Mossavvari; Reza Zarei Sahamieh; Adel Saki; Amirali Tabakh Shabani; Ahmad Ahmadi-khalaji

Volume 29, Issue 115 , June 2020, , Pages 277-288


  The metamamorphic rocks of Sanandaj-Sirjan Zone (SSZ) in the west part of Hamedan at CheshmehGhassaban village were intruded by olivine gabbro- gabbro at the middle Jurassic. The rocks consist of olivine, clinopyroxene, plagioclase, phologopite, brown amphibole and biotite and belong to alkaline series, ...  Read More

Emplacement and evolution of the Alvand batholith in the shallow level of crust, Hamedan, West of Iran

H. Shahbazi; H. Barjasteh; A. A. Sepahi; A. Mottaghi Tavana

Volume 28, Issue 110 , December 2018, , Pages 67-78


  The Alvand batholith is located in the south of the Hamedan city and in the northern part of the Sanandaj-Sirjan metamorphic zone. Porphyroid granite, quartz diorite and diorite are formed rock members of the mesocratic granitoids in the Alvand plutonic complex. Porphyroid coarse-grained granites make ...  Read More

Investigations on mineral chemistry and P-T estimation for formation of diopside, garnet and coexisting minerals in the calc- silicate hornfelses from the Alvand metamorphic aureole, Hamadan, West of Iran

H Ghorbani; M Moazzen; A Saki

Volume 26, Issue 101 , December 2017, , Pages 139-146


  Calc-silicate hornfelses are resulted from temperature excreted from the Alvand Batholith on the surrounding carbonate rocks. Metamorphic minerals in these rocks are vesuvianite + garnet+clinopyroxene+ tremolite/actinolite+quartz+calcite±epidote. Calc- silicate minerals occurred in two stages ...  Read More

MicrofaciesAnalysis and Paleoenvironment of Carbonate Sedimentary Rocks(Asmari Formation)in Posht-Darband, Hamedan

S.A Babazadeh; M Rahmati

Volume 25, Issue 97 , December 2016, , Pages 123-130


  Carbonate sedimentary rocks equivalent to Asmari Formation containing thick and thin bedded and massive limestones with a thickness of 160m studied in Posht-Darband, Hamadan.  The base of the sedimentary sequence begun with a transgressive conglomeratic horizon. This horizon is composed of rock ...  Read More

Deformation Stages of the Metamorphic Rocks in Hamedan Area and Their Relationship with Alvand Intrusive Pluton

L Izadi kian; M Mohajjel; S.A Alavi

Volume 23, Issue 92 , September 2014, , Pages 187-198


  Hamedan area is in the NW of the Sanandaj-Sirjan Zone. Different types of plutonic rocks are outcropped in this area which in turn, surrounded by the various metamorphic rocks (regional and contact metamorphism). Four ductile deformation stages were recognized. Each of them is accompanied with formation ...  Read More

Structural Analysis of Simin-Darreh Moradbeik Shear Zone,South of Hamedan

L. Izadi kian; A. Alavi; M. Mohajjel

Volume 19, Issue 75 , January 2010, , Pages 39-46


  The Simin- Darreh Moradbeik shear zone is located in the south of Hamedan city with 5 km width and at least 10 km length. The portion of contact metamorphic rocks, plutonic rocks and migmatits are affected by this shear zone. At least three ductile deformation stages are recognized by folding and foliation ...  Read More

Fluid Pressure and the Lack of Chloritoid in Metapelites: Implications from Hamedan Area, Sanandaj- Sirjan Zone, Iran

A. A. Baharifar

Volume 19, Issue 76 , January 2010, , Pages 135-140


  Chloritoid as one of the common metamorphic mineral in low to medium grade metapelites, is absent in metapelitic rocks of Hamedan area. Comparing with geochemical limitations for Chloritoid appearance in metapelites, whole rock composition of the area is suitable for Chloritoid formation. Since P, T ...  Read More