Results 31 to 40 of about 1,221,168 (223)
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 +3 more
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New detrital zircon U–Pb insights on the palaeogeographic origin of the central Sanandaj–Sirjan zone, Iran [PDF]
, 2021 New detrital U–Pb zircon ages from the Sanandaj–Sirjan metamorphic zone in the Zagros orogenic belt allow discussion of models of the late Neoproterozoic to early Palaeozoic plate tectonic evolution and position of the Iranian microcontinent within a ...
Farzaneh Shakerardakani +5 more
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Metamorphic conditions of dolomitic marbles from the Qori metamorphic complex, southern Sanandaj-Sirjan zone, using phase thermodynamic diagrams [PDF]
علوم زمین خوارزمیThe Barrovian-Qori metamorphic complex, which is exposed in the southern part of the Sanandaj-Sirjan zone, has a succession of metaultramafic, metabasite, metapelite, metacalcic silicate, and marble lithological diversity.
Abdolnader Fazlnia, Mir Mohammad Miri
doaj +1 more source
Ecological and Statistical Evaluation of Genetic Algorithm (GARP), Maximum Entropy Method, and Logistic Regression in Predicting Spatial Distribution of <i>Astragalus</i> sp. [PDF]
Scientifica (Cairo)This study aims to evaluate the potential habitat of Astragalus sp. using three different species distribution modeling methods: the maximum entropy (MaxEnt) model, the Genetic Algorithm for Rule‐Set Production (GARP), and logistic regression. The primary objective was to identify key environmental factors that influence the spatial distribution of ...
Ghahremanian A +4 more
europepmc +2 more sources
, 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 ...
Somayeh Rahmani Javanmard +3 more
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The Neotethyan Sanandaj‐Sirjan zone of Iran as an archetype for passive margin‐arc transitions [PDF]
Tectonics, 2016 Abstract The Sanandaj‐Sirjan zone of Iran is a northwest trending orogenic belt immediately north of the Zagros suture, which represents the former position of the Neotethys Ocean. The zone contains the most extensive, best preserved record of key events in the formation and evolution of the Neotethys, from its birth in Late Paleozoic
Hassanzadeh, Jamshid, Wernicke, Brian P.
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Petrology and geochemistry of Noraldinabad rhyolites, NW Iran [PDF]
پترولوژی, 2023 Felsic igneous rocks record crustal evolutions and provide an important tool for determining the composition and modification of the crust (Zhang et al., 2018). Up to now, several classifications have been proposed for granites and rhyolites.
Mohammad Hosseinikia +2 more
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Contributions to Geophysics and Geodesy, 2020 A detailed knowledge of the thickness of crust and upper mantle structure is important for understanding a plate tectonics and geodynamics in the region. We use body wave for detecting details of the subsurface structure. The information in this research
Shahireh JAVADI +2 more
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, 2021 Chemical composition of Jurassic granites of the Sanandaj-Sirjan Zone, western IranTHIS DATASET IS ARCHIVED AT DANS/EASY, BUT NOT ACCESSIBLE HERE.
Maghdour-Mashhour, R (via Mendeley Data) +1 more
core +1 more source
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 +3 more
wiley +1 more source