Results 41 to 50 of about 1,221,168 (223)

Petrology and geochemistry of some granitoid and intermediate rocks in southwest of the Qorveh area (Kurdistan) [PDF]

open access: yesپترولوژی, 2018
In the southwest of the Qorveh area, north of the Sanandaj-Sirjan zone, there are outcrops of acidic and intermediate rocks including monzogranite, granodiorite, tonalite and diorite.
Farhad Aliani   +3 more
doaj   +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

open access: yesTectonics, 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   +9 more
wiley   +1 more source

GEOTHERMOBAROMETRY OF AMPHIBOLES IN GRANITOID ROCKS FROM THE BAGHCHE MARYAM AREA, SANANDAJ-SIRJAN ZONE, NW IRAN [PDF]

open access: diamond, 2020
The Baghche Maryam (BM) granitoid body is located in the northern part of the Sanandaj-Sirjan zone (SSZ), NW Iran. The BM intrusion is composed of diorite, monzodiorite, syenite and granite with a calc-alkaline to alkaline affinity. Mafic minerals in the
F Sheikhi   +3 more
core   +3 more sources

Tectonics, Base‐Level Fluctuations, and Climate Impact on the Eocene to Present‐Day Erosional Pattern of the Arabia‐Eurasia Collision Zone (NNW Iranian Plateau and West Alborz Mountains)

open access: yesTectonics, Volume 42, Issue 8, August 2023., 2023
Abstract The NNW Iranian Plateau and west Alborz within the Arabia‐Eurasia collision zone are characterized by three main tectono‐stratigraphic zones, crosscut by the Qezel‐Owzan River (QOR) Basin. The interplay between present‐day deformation and climate, which control the landscape evolution of the region, is still poorly constrained.
Amaneh Kaveh‐Firouz   +5 more
wiley   +1 more source

Petrography, geochemistry and mineral chemistry of the Almogholagh intrusive rocks (Hamedan, Iran): Evidences for their shallow-level emplacement [PDF]

open access: yesپترولوژی, 2018
The Almogholagh plutonic body with about 10 km2 is located 15 km of West of Hamedan city and on the Sanandaj-Sirjan zone. The Almogholagh pluton consists of diorite and gabbroic diorite, monzodiorite, quartz monzodiorite, monzonite, quartz monzonite ...
Hossein Shahbazi   +6 more
doaj   +1 more source

Paleomagnetism From Central Iran Reveals Arabia‐Eurasia Collision Onset at the Eocene/Oligocene Boundary

open access: yesGeophysical Research Letters, Volume 50, Issue 12, 28 June 2023., 2023
Abstract We present two robust and well‐dated paleomagnetic poles from upper Eocene and Oligocene volcanics in the Urumieh‐Dokhtar magmatic arc, Central Iran. These two poles place Iran ∼3.7°–3° of latitude south of its present position between ca. 40 and 23 Ma.
Peiping Song   +8 more
wiley   +1 more source

Shattered Veins Elucidate Brittle Creep Processes in the Deep Slow Slip and Tremor Region

open access: yesTectonics, Volume 42, Issue 4, April 2023., 2023
Abstract Deep Slow Slip and Tremors (SSTs) are a combination of transient clusters of tectonic tremors and slow slip associated with extremely elevated fluid pressures. SSTs are thought to reflect a transition from viscous to brittle plate interface rheology and likely exert a first‐order control on megathrust seismicity.
J. Muñoz‐Montecinos   +3 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)

open access: yesGeochemistry, 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   +9 more
wiley   +1 more source

mineralogy, the nature of magmatic and tectonic setting of amphibolite protolith from Gol Gohar iron ore deposit, Sirjan, Kerman [PDF]

open access: yesپترولوژی, 2018
The Golgohar iron mine is located at 55 km southwest of Sirjan in the Sanandaj-Sirjan structural zone. The host rocks of the ore deposit include metamorphosed rocks in green schist and amphibolite facies.
Afsane Jafari   +4 more
doaj   +1 more source

Geodynamic evolution of the Sanandaj-Sirjan Zone, Zagros Orogen, Iran

open access: yesTURKISH JOURNAL OF EARTH SCIENCES, 2015
Abstract: The Sanandaj-Sirjan Zone is a metamorphic-magmatic belt, associated with the Zagros Orogen and part of the Alpine-Himalayan orogenic system in Iran. Stratigraphic, metamorphic, magmatic, and tectonic evidence presented here indicates that the Sanandaj-Sirjan Zone, the Central Iranian Microcontinent, and the North West Iranian Plate were a ...
Javad MEHDIPOUR GHAZI, Mohssen MOAZZEN
openaire   +1 more source

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