Results 61 to 70 of about 1,166,788 (193)

Middle Cretaceous Andean‐Type Arc Evolution in the Sanandaj–Sirjan Zone (Shalair Valley), Iraq: New Geochronological and Geochemical Constraints

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract The middle Cretaceous granitoid plutons of the Shalair Valley, situated in northeastern Iraq, constitute a principal magmatic component of the Sanandaj–Sirjan Zone within the northwestern segment of the Zagros Orogenic Belt. Among these plutons, the equigranular Aulan body (AG) and the porphyritic Laladar body (LG) were crystallized at 111.0 ± 
Imad Kadhim Abdulzahra, Yoshihiro Asahara, Yousif Mohammad, Ayten Hadi   +3 more
wiley   +1 more source

path of the Boroujerd Complex, north‐west Sanandaj–Sirjan Zone, western Iran: Insights from phase equilibrium modelling and thermobarometry

, 2021
Variations in the pressures and temperatures of metamorphism reflect the complexity of collisional orogenic systems. In the north-west Sanandaj–Sirjan Zone of western Iran, migmatites in the Boroujerd area record earlier dynamothermal metamorphism ...
Maarten A. T. M. Broekmans, Somayeh Rahmani Javanmard, Rahmani Javanmard, Somayeh, Verdecchia, Sebastián Osvaldo, Sebastián O. Verdecchia, Yakymchuk, Chris, Chris Yakymchuk, Broekmans Maarten A. T. M.   +7 more
core   +1 more source

Depositional Setting of Eastern Sakarya Zone (NE Türkiye): Late Cretaceous–Paleogene Period Biostratigraphy, Sedimentology and Tectono‐Sedimentary Basin Evolution

Basin Research, Volume 38, Issue 3, May–June 2026.
K‐Pg transition and Maastrichtian stage of sedimentary basin evolution of the Eastern Sakarya Zone. ABSTRACT This study reconstructs the late Campanian–Thanetian tectonic and sedimentary evolution of the Eastern Sakarya Zone Basin (Türkiye) during the closure of the Neotethys Ocean, through the integration of tectonic, biostratigraphic and sedimentary ...
Fatih Köroğlu
wiley   +1 more source

Garnet-Amphibolites Mineralogy and thermobarometry in Aliabad-Damagh (south of Hamedan, Sanandaj-Sirjan Zone) [PDF]

پترولوژی, 2017
The garnet-amphibolites in Aliabad-Damagh area, occurs as layers and are enveloped by staurolite-schist. They composed predominantly of garnet, hornblende, feldspar (± muscovite and quartz) with titanite, epidote, ilmenite and graphite as accessory ...
Ali Akbar Baharifar, Kwan Nang Pang, Sun Lin Chung, Yoshiyuki Iizuka   +3 more
doaj   +1 more source

Deciphering Asynchronous Teleconnections: How Dynamic Time Warping Reveals the Hidden Drivers of Iranian Drought

Earth and Space Science, Volume 13, Issue 4, April 2026.
Abstract Identifying robust precursors for seasonal drought is a central challenge in Earth system science, traditionally approached with linear methods that often fail to capture the complex, asynchronous nature of teleconnections. These methods, by assuming fixed‐phase relationships, can overlook or misrepresent crucial climate drivers.
P. Mahmoudi, P. Jafari, A. Ghaemi, J. Jian, F. Firoozi, J. Yang   +5 more
wiley   +1 more source

Petrography and Geochemistry of tourmaline nodules from Aderba leucogranite (northeast of Golpaygan) [PDF]

پترولوژی, 2016
The Aderba leucogranite in the Golpayegan metamorphic core complex (GMC), a part of Sanandaj-Sirjan zone, host lentiform small (2*4 cm)(Type 1) and large (7*14 cm)(Type 2)tourmaline nodules. In terms of mineralogical features, the core of these two types
Akramosadat Mirlohi, Mahmoud Khalili
doaj  

Petrogenisis of Mafic- intermediate Magmatism, East of Sanandaj; A New approach with careful monitoring of geochemical evidences [PDF]

پترولوژی, 2019
The East Sanadaj magmatic rocks of the northern Sanandaj-Sirjan Zone, part of Zagros Orogen, comprise several intrusive bodies that were generated during northeastward subduction of Neo-tethys beneath the Iranian sector of the Eurasian plate.
Sanaz Yajam
doaj   +1 more source

Upper Cretaceous Yüksekova Complex (Type Area), Easternmost Türkiye: Formation and Emplacement of a Proximal Back‐Arc Segment of a Tethyan Intra‐Oceanic Arc

Island Arc, Volume 35, Issue 1, January/December 2026.
ABSTRACT We provide the first comprehensive information and interpretation of the type area of the regionally important Upper Cretaceous oceanic arc, known as the Yüksekova Complex. Here, the arc's development is investigated using field observations, igneous and sedimentary petrography, micropaleontology of planktic foraminifera, x‐ray diffraction of ...
Alastair H. F. Robertson, Osman Parlak, Kemal Taslı   +2 more
wiley   +1 more source

Ilvaite trace mineral chemistry as a thermodynamic recorder of retrograde alteration and metallogenic indicator for discrimination of skarn deposits: an example from the iron deposit in North Sanandaj-Sirjan Zone [PDF]

علوم زمین خوارزمی, 2023
Ilvaite, CaFe22+Fe3+(Si2O7)O(OH), is one of the important trace minerals in the retrograde alteration stage of skarn deposits. In this contribution, by using microscopic evidence, X-ray diffraction (XRD) and electron microprobe analysis (EPMA), the ...
Ebrahim Tale Fazel
doaj  

Restoring the Missing Late Cretaceous Arc of Iran

Geochemistry, Geophysics, Geosystems, Volume 26, Issue 12, December 2025.
Abstract Persistent arc magmatism archives fluid transport and mantle partial melting in subduction zones. However, arc magmatism often exhibits different magmatic records along the strike, as seen in the Tethyan orogenic belt. During Neo‐Tethys subduction under Iran, there was pulsed arc magmatism with Middle Jurassic and Eocene magmatic flare‐ups ...
Yiyang Lei, Yang Chu, Mark B. Allen, Wei Lin, Bo Wan, Ling Chen, Morteza Talebian, Guangyao Xin, Tanjie Liu, Yilin Guo, Lin Guo   +10 more
wiley   +1 more source