Results 41 to 50 of about 376 (118)
Attenuation Models for Estimation of Vertical Peak Ground Acceleration Based on PSO Algorithm for the North of Iran [PDF]
, 2023 Peak ground acceleration (PGA) is a critical parameter in ground-motion investigations, in particular in earthquake-prone areas such as Iran. In the current study, a new method based on particle swarm optimization (PSO) is developed to obtain an ...
Akbar Shirzad +3 more
core +1 more source
Quaternary slip rates along the northeastern boundary of the Arabia-Eurasia collision zone (Kopeh Dagh Mountains, Northeast Iran) [PDF]
Geophysical Journal International, 2009 P>The Kopeh Dagh is accommodating a large portion of the northward motion of central Iran with respect to Eurasia, involving a major right-lateral strike-slip fault system (Bakharden-Quchan). This fault system corresponds to the northeastern boundary of the Arabia-Eurasia collision, and can be considered as a lithospheric-scale tectonic feature.
Shabanian, Esmaeil +4 more
openaire +3 more sources
Post-Cimmerian (Jurassic–Cenozoic) paleogeography and vertical axis tectonic rotations of Central Iran and the Alborz Mountains [PDF]
, 2015 According to previous paleomagnetic analyses, the northward latitudinal drift of Iran related to the closure of the Paleo-Tethys Ocean resulted in the Late Triassic collision of Iran with the Eurasian plate and Cimmerian orogeny.
CIFELLI, FRANCESCA +3 more
core +1 more source
Journal of Economic Geology, 2020 Introduction Thermobarometric models based on the chemical equilibrium among coexisting mineral-mineral or mineral-melts pairs are useful tools widely used to estimate the P-T path and chemical evolution during igneous processes. The high sensitivity of
Marzieh Veiskarami +3 more
doaj +1 more source
International Scholarly Research Notices, Volume 2013, Issue 1, 2013., 2013 For the comparison of lithofacies in siliciclastic, carbonate, and mixed siliciclastic‐carbonate tidal systems, three successions including Top Quartzite (Lower‐Middle Cambrian), Deranjal Formation (Upper Cambrian), and Padeha Formation (Lower‐Middle Devonian) in the north of Kerman and Tabas regions (SE and E central Iran) were selected and described,
Hamed Zand-Moghadam +7 more
wiley +1 more source
Geology, petrology, geochemistry and geochronology of Tarik Darreh plutonic rocks, northeastern Iran
Journal of Economic Geology, 2020 Introduction The investigated area in northeastern Iran that is known as the Tarik Darreh arsenopyrite-Au-W prospecting target is situated in the Kopeh Dagh zone (Fig. 1).
Jamal Ghavi +4 more
doaj +1 more source
Earthquakes and active tectonics of the South Caspian region, Central Asia [PDF]
The study of earthquakes and active faulting is vitally important at multiple scales. At a local level, analysis of past earthquakes and surface ruptures provides insight and source parameters that are critically important for effective seismic hazard ...
Marshall, Neill Russell
core +2 more sources
Journal of Geological Research, Volume 2013, Issue 1, 2013., 2013 In this paper, the biostratigraphy and sequence stratigraphy of marine Paleogene deposits from the Kopet‐Dagh basin (NE of Iran) are described. Particularly the absence of Morozovella genus is discussed. In addition, the Paleocene/Eocene boundary has been studied in detail using the record of planktonic and larger benthic foraminifera. This boundary is
Batool Rivandi +5 more
wiley +1 more source
Lg Coda Variations in North‐Central Iran
International Journal of Geophysics, Volume 2012, Issue 1, 2012., 2012 Ground motion records in north‐central Iran have been used in order to obtain the Lg coda Q, using stack spectral ratio method. The lateral variations in Q0 and its frequency dependence are estimated in the 0.3–7.0 Hz frequency range which led to Q = 267(±32) × f0.71(±0.14).
Mojtaba Naghavi +3 more
wiley +1 more source
A declustered earthquake catalog for the Iranian Plateau [PDF]
, 2015 A unified catalog of earthquakes in Iran and adjacent regions (the area bounded in 22º-42ºN and 42º-66ºE) covering the period of 4th century B.C. through 2012 with Mw≥4 is provided. The catalog includes all events for which magnitude have been determined
Mirzaei, Noorbakhsh +2 more
core +3 more sources