Results 11 to 20 of about 1,221,168 (223)

Garnet as a Proxy for Deciphering Polymetamorphic Histories: An Example From the Sanandaj‐Sirjan Zone of Iran [PDF]

open access: hybridGeological Journal
ABSTRACT In the central sector of the Sanandaj‐Sirjan zone of Iran, the Triassic‐to‐Jurassic ‘Hamedan Phyllites’ metamorphic complex shows a polymetamorphic evolution characterised by a main Barrovian‐ to Buchan‐type garnet+staurolite+kyanite/andalusite regional sequence, locally overprinted by a low‐pressure thermal event generated ...
Mirmohammad Miri   +4 more
wiley   +5 more sources

Tectonomagmatic settings of Jurassic granitoids in the Sanandaj-Sirjan Zone, Iran: A review [PDF]

open access: diamondGeologos, 2022
Abstract The present paper discusses the geochemical affinities, origin and ages of Jurassic granitoids of the Sanandaj-Sirjan Zone (SaSZ) in the eastern part of the Zagros Thrust Zone. A multidisciplinary, integrated approach was carried out using existing granitoid geochemical data (major, trace, rare earth element and isotopes) and ...
Mohammad Hassan Karimpour   +2 more
core   +5 more sources

A new tectonic scenario for the Sanandaj–Sirjan Zone (Iran)

open access: yesJournal of Asian Earth Sciences, 2006
Abstract Recent geochemical studies of volcanic rocks forming part of the ophiolites within the Zagros and Naien-Baft orogen indicate that most of them were developed as supra-subduction ophiolites in intra-oceanic island arc environments. Intra-oceanic island arcs and ophiolites now forming the Naien-Baft zone were emplaced southwestward onto the ...
A. Ghasemi, C.J. Talbot
openaire   +2 more sources

Petrological Evolution of the Upper Mantle Beneath the Southern Sanandaj-Sirjan Zone: Evidence from Kuhshah Peridotite Massif, Southeast Iran [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2014
The Kuhshah ultramafic complex is located in the south-east of Sanandaj-Sirjan metamorphic zone, near the probable remnants of Neotethys plate in Iran. It consists of highly depleted harzburgites, dunites, chromitite bands and altered gabbros.
H. Ahmadipour
doaj   +2 more sources

Origin of tourmaline in micaschists of ‎Gol-e-Gohar metamorphic complex from south-eastern Sanandaj-Sirjan Zone (Baft, Kerman Province)‎ [PDF]

open access: yesپترولوژی, 2018
In Gol-e-Gohar micaschists from south-east Sanandaj-Sirjan Zone (Kerman province), there are tourmaline crystals which are enriched in  Mg and Na (Mg: 1.830 a.p.f.u and Na: 0.680 a.p.f.u), and so, they are dravite in compositions belonging  to alkaline ...
Hosein Fatehi   +2 more
doaj   +3 more sources

Petrography, Mineral Chemistry and Geothermobarometry of Andalusite- Bearing Schists North of Azna (Northern Sanandaj-Sirjan Zone, Iran)

open access: yesJournal of Economic Geology, 2016
Introduction The area studied is located north of Azna (Lorestan Province) in a small portion of the Sanandaj – Sirjan structural zone (Mohajjel et al., 2003).This area is part of the Zagros orogenic belt, formed by the opening and closure of Neotethyan
Karim Abdollahi Silabi   +2 more
doaj   +1 more source

Contribution of ultramafic rocks in central Sanandaj-Sirjan zone to the characterizing of physio-chemical condition during initiation of subduction [PDF]

open access: yesپترولوژی, 2018
In the central part of the Sanandaj-Sirjan zone, there is an ultramafic rock exposure (hornblendite and pyroxenite) adjacent to Molataleb felsic complex completely located between Azna and Aligoodarz towns.
Amir Esna-Ashari, Fatemeh Sarjoughian
doaj   +3 more sources

Diagenesis and Tectonic Setting of the Varcheh Intrusive Masses in Sanandaj-Sirjan Zone, Iran [PDF]

open access: diamond, 2022
Varcheh intrusive masses of the Sanandaj-Sirjan zone (SSZ) are embedded in middle and upper cretaceous sedimentary rocks. The lithological composition of this complex is mostly olivine gabbro, monzogabbro, diorite, and monzodiorite with granular and ophitic textures.
Saeed Naeemi   +4 more
core   +5 more sources

Tectonic significance of Triassic mafic rocks in the June Complex, Sanandaj–Sirjan zone, Iran [PDF]

open access: yesSwiss Journal of Geosciences, 2017
ISSN:1661 ...
Farzaneh Shakerardakani   +5 more
openaire   +4 more sources

The Eastern Khoy metamorphic complex of NW Iran: a Jurassic ophiolite or continuation of the Sanandaj–Sirjan Zone? [PDF]

open access: yesJournal of the Geological Society, 2019
The Khoy complex in NW Iran has been widely regarded to consist of both Jurassic and Cretaceous ophiolites, but whereas the western Late Cretaceous ophiolite is unequivocal the nature of the eastern Jurassic body has been unclear. Field observations show that the presumed eastern meta-ophiolite has no similarities to an ophiolite ...
Hadi Shafaii Moghadam   +3 more
openaire   +4 more sources

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