Results 21 to 30 of about 246 (131)

Geology, petrography, alteration, and geochemistry of the Shahrab igneous rock, Central Iran

Geology, Ecology, and Landscapes, 2021
Eocene to Quaternary calc-alkaline volcanic and intrusive rocks are exposed in Shahrab area in the Urumieh-Dokhtar magmatic belt in the Central Iran structural zone.
Kaveh Pazand, Moslem Aghaei Kerigh, Mohammad Reza Rezvanianzadeh   +2 more
doaj   +1 more source

Application of Clinopyroxene Chemistry for Investigation of the physical conditions of ascending magma, a case study of volcanic rocks in the Aliabad area (Northwest of Nain)

Journal of Economic Geology, 2020
Introduction The Aliabad area is located in the northwest of Nain. Volcanic rocks of the Aliabad area have andesitic to rhyolitic composition. On the basis of petrographic investigations, porphyritic texture is the main texture of these rocks.
Rezvan Mehvari, Mortaza Sharifi
doaj   +1 more source

Petrological characterization of the Cenozoic igneous rocks of the Tafresh district, central Urumieh-Dokhtar Magmatic Arc (Iran)

International Geology Review, 2020
We report a petrographic and whole-rock geochemical characterization of the Cenozoic volcanic rocks cropping out in the Tafresh area of the central Urumieh-Dokhtar Magmatic Arc of Iran. The investigated rocks range mainly from basaltic andesite to dacite, and are considered to be genetically linked by (mostly) closed-system evolutionary processes ...
Salari G.[1], Lustrino M.[1, 2], Ghorbani M.R.[3], Agostini S.[4], Fedele L.[5]   +5 more
openaire   +4 more sources

Biofacies Analysis of the Upper Oligocene Deposits (Qom Formation) in Urumieh Dokhtar Zone, Iran [PDF]

Anuário do Instituto de Geociências, 2017
In order to determine the accurate paleoenvironmental conditions of Qom Formation, one stratigraphic section was studied in the Urumieh-Dokhtar Zone (West of Ashtian).
Zohre Holakouee, Mehdi Yazdi, Bizhan Yousef   +2 more
doaj   +1 more source

A New Lithospheric Density and Magnetic Susceptibility Model of Iran, Starting From High‐Resolution Seismic Tomography

Journal of Geophysical Research: Solid Earth, Volume 128, Issue 12, December 2023., 2023
Abstract We propose a new model for the crust and upper mantle in Iran by joint inversion of gravity and magnetic fields, constrained with a seismic tomography model. We then calculate shear modulus from the Vs velocities and densities. The crust and mantle tomography model is first converted to a density cube through empirical and petrological ...
G. Maurizio, C. Braitenberg, D. Sampietro, M. Capponi   +3 more
wiley   +1 more source

Tectono‐Sedimentary Evolution of Shale‐Related Minibasins in the Karvandar Basin (South Sistan, SE Iran): Insights From Magnetostratigraphy, Isotopic Dating, and Sandstone Petrology

Tectonics, Volume 42, Issue 11, November 2023., 2023
Abstract Sediments deposited into foreland basins can provide valuable insights related to the geological evolution of their hinterlands. Located in the peripheral foreland of the South Sistan Suture Zone (SE Iran), the Karvandar Basin exhibits a several‐kilometer‐thick shallow‐marine to continental clastic sedimentary sequence forming elongated sub ...
J. B. Ruh, L. Valero, M. Najafi, N. Etemad‐Saeed, J. Vouga, A. Mohammadi, F. Landtwing, M. Guillong, M. Cobianchi, N. Mancin   +9 more
wiley   +1 more source

Low‐Temperature Thermochronologic Response to Magmatic Reheating: Insights From the Takab Metallogenic District of NW Iran, (Arabia‐Eurasia Collision Zone)

Geochemistry, Geophysics, Geosystems, Volume 24, Issue 1, January 2023., 2023
Abstract The interpretation of low‐temperature thermochronology (LTT) data in magmatic and metallogenic provinces requires a knowledge of the geothermal field through time. There, the challenge is differentiating rapid cooling following transient perturbations of the geotherms (reheating) from exhumational cooling induced by erosion during tectonic ...
Masoud Biralvand, Paolo Ballato, Maria Laura Balestrieri, Mohammad Mohajjel, Edward R. Sobel, Istvan Dunkl, Giordano Montegrossi, Mohammad R. Ghassemi, Johannes Glodny, Manfred R. Strecker   +9 more
wiley   +1 more source

Geochronology and petrogenesis of granitoids and associated mafic enclaves from Ghohroud in the Urumieh–Dokhtar Magmatic Arc (Iran): Evidence for magma mixing during the closure of the Neotethyan Ocean

Geological Journal, Volume 57, Issue 8, Page 3313-3332, August 2022., 2022
A comprehensive dataset from petrographic characteristics to geochemical compositions of the mafic microgranular enclaves and granitoid host rocks from the Urumieh–Dokhtar Magmatic Arc (Iran) was presented. The new data provide significant insight into the evolution of magmatism in this area, which was tightly related to the Neotethyan closure.
Tayebeh Khaksar, Nematollah Rashidnejad‐Omran, Shuang‐Qing Li, Shu‐Guang Song, Ali Kananian, Fukun Chen, Su Li   +6 more
wiley   +1 more source

Petrogenesis of the Late Oligocene Takht batholith, Southeastern Iran: Implications for the Diachronous Nature of the Arabia–Eurasia Collision

Frontiers in Earth Science, 2020
Zircon U-Pb age, mineral compositional, elemental and Sr-Nd isotopic data are documented for intermediate to felsic rocks in the Takht batholith, a Late Oligocene igneous complex in the southeastern segment of the Urumieh-Dokhtar belt, Iran, to ...
Kwan-Nang Pang, Abdolnaser Fazlnia, Wei-Qiang Ji, Susan Jamei, Susan Jamei, Amin Jafari, Amin Jafari   +6 more
doaj   +1 more source

Geochemistry and source of tourmaline from the Soheyle-Pakuh granitoid body (North of Nain) [PDF]

پترولوژی, 2018
The Oligocene Soheyle Pakuh granitoid body is located in the Urumieh- Dokhtar zone, which composed predominately of granodiorite, diorite and granite with mafic, aplite dikes and iron-tourmaline veins.
Mahin Mansouri Esfahani, Mohammad ‎ Bakhshi   +1 more
doaj   +1 more source