نتایج جستجو برای: zagros orogenic belt

تعداد نتایج: 19712  

Journal: :Heritage 2023

Geoheritage requires proper conservation and has significant importance for geoscience education at universities. Furthermore, its related potential needs to be evaluated. This study focuses on two textbook localities (these are parts of larger geosites) from the Cenozoic orogenic belts, namely Zagros Greater Caucasus. The novel, tentatively proposed approach aims general geological characteris...

2007
BENJAMIN F. ZAITCHIK JASON P. EVANS RONALD B. SMITH

The authors propose that a heat-driven circulation from the Zagros Plateau has a significant impact on the climate of the Middle East Plain (MEP), especially summertime winds, air temperature, and aridity. This proposal is examined in numerical experiments with a regional climate model. Simulations in which the Zagros Plateau was assigned a highly reflective, “snowlike” albedo neutralized the h...

Journal: :Geologos 2021

Abstract The foraminiferal contents of the lower–middle Miocene succession exposed in three sections north Nur Abad on northwestern side High Zagros Thrust Belt were studied. Assemblages larger foraminifera from these can be referred to Zone SBZ 25 (and Miogypsina globulus and intermedia subzones), which correlates with Burdigalian Stage. For first time, planktonic documented area document Lang...

Journal: :زمین شناسی مهندسی 0

the andeka earthquake of 25/09/2002 (mw = 5.6) shocked the northeast region of the city of masjed-soleyman in zagros folded belt. the event caused no life loss but 4 people were reported to be injured. the quake occurred in the southern parts of the zagros belt in an oil-rich area. no damage could be observed in the masjed-soleyman dam site, which is the most important hydroelectric infrastruct...

Journal: :Geophysical Research Letters 2022

Detailed knowledge of the lithospheric structure is essential for a better understanding tectonic evolution Xing'an-Mongolian Orogenic Belt (XMOB). We constrained across XMOB by receiver function imaging and shear wave splitting analysis from dense seismic array. The lithosphere-asthenosphere boundary (LAB) coherently imaged in different blocks. mid-lithospheric discontinuity also identified at...

2014
Claudio Faccenna Thorsten W. Becker Meghan S. Miller Enrico Serpelloni Sean D. Willett

a r t i c l e i n f o a b s t r a c t The elevation of an orogenic belt is commonly related to crustal/lithosphere thickening. Here, we discuss the Apennines as an example to show that topography at a plate margin may be controlled not only by isostatic adjustment but also by dynamic, mantle-driven processes. Using recent structural constraints for the crust and mantle we find that the expected...

2007
Elizabeth A. McClellan Mark G. Steltenpohl Christopher Thomas Calvin F. Miller

U-Pb and Ar/Ar dates from the Talladega belt, southernmost Appalachians, provide insight into the timing and nature of pre-Alleghanian tectonism in this region. Low-grade metasedimentary rocks of the Talladega belt represent the outermost preserved portions of the southern Laurentian margin, thus recording the earliest orogenic events that affected the margin, in addition to later overprinting ...

Pichagchi pluton is situated in the northeastern part of the Soursat complex in Sanandaj-Sirjan metamorphic belt of Iran. The pluton with the age of 74.20 Ma is composed mainly granodiorite, diorite, and tonalite in which mafic minerals are biotite and amphibole. In this study, composition of minerals used to describe the nature of the granitic magma and estimate the pressure and temperature at...

Journal: :Turkish Journal of Earth Sciences 2023

The Bitlis-Zagros Fold-Thrust Belt is one of the world?s largest deformation zones, extending from Eastern Mediterranean in southern Turkey to south Iran. This zone partitioned between different structures; however, little known about relative activities these structures and their effects on topography. An area located northern part Bitlis- Zagros Belt, just Anatolian Plateau was studied detail...

Journal: :Artificial Satellites 2022

Abstract Integrated geophysical mapping benefits from visualizing multi-source datasets including gravity and satellite altimetry data using 2D 3D techniques. Applying scripting cartographic approach by R language GMT supported traditional in QGIS is presented this paper with a case study of Iranian geomorphology special focus on Zagros Fold-and-Thrust Belt, unique landform the country affected...

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