Results 31 to 40 of about 1,523 (113)

Probabilistic View of Occurrence of Large Earthquakes in Iran [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2018
In this research seismicity parameters, repeat times and occurrence probability of large earthquakes are estimated for 35 seismic lineaments in Persian plateau and the surrounding area.
M. Nemati
doaj   +1 more source

Paleomagnetic data from Kope-Dagh, Northeast Iran

open access: yes, 2023
This dataset includes paleomagnetic data from 70 sampling sites, collected in northeastern Iran during two campaigns carried out in August 2016 and September 2017 (Table 1). The data are supplement to Mattei et al. (2019).
Mattei, Massimo   +5 more
core   +1 more source

Palaeoenvironmental study and sequence stratigraphy of Sanghaneh Formation in Qalehjegh section (North of Bojnord) using organic matter contents of the rock unit [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2015
  Introduction   Kopeh-Dagh basin is located northeast of Iran and in this basin the sedimentary beds began from middle Jurassic. The Sanghaneh Formation is one of the lower Cretaceous rock units in sections.
Hossein Kazemi, Ebrahim Ghasemi-Nejad
doaj   +2 more sources

On certain Neocomian – Aptian calcareous algae in the West of Kopeh-Dagh (NE-Iran) – Systematics and compared biogeography, focusing on Dasycladales

open access: yes, 2020
In Western Kopeh-Dagh, the lower Cretaceous carbonate series contains distinctive assemblages of calcareous algae, chiefly Dasycladales which are primarily studied in this work.
Conrad M. A.   +5 more
core   +1 more source

The occurrence of Neoflabellina bioevents across the Coniacian/Santonian boundary in the Abderaz Formation, Kopeh-Dagh Basin, Iran

open access: yesStratigraphy, 2020
In this study, Abderaz Formation at six stratigraphical sections, in east and center of the Kopeh-Dagh sedimentary basin, has been investigated, based on biserial planktonic foraminifera. Totally, 831 samples, with 3 meter distance, were gathered from a sequence with 2800 meter thickness. Also 4 genera and 17 species of biserial planktonic foraminifera
Meysam Shafiee Aredestani   +2 more
openaire   +2 more sources

Mineral chemistry and geothermobarometry of metabasites of the Majerad igneous-metamorphic complex (SE of Shahrood)

open access: yesJournal 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

Comparison of Tidalites in Siliciclastic, Carbonate, and Mixed Siliciclastic‐Carbonate Systems: Examples from Cambrian and Devonian Deposits of East‐Central Iran

open access: yesInternational 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

Biostratigraphy and Sequence Stratigraphy of Paleogene Deposits in Central Kopet‐Dagh Basin (NE of Iran)

open access: yesJournal 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

open access: yesInternational 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

Geology, petrology, geochemistry and geochronology of Tarik Darreh plutonic rocks, northeastern Iran

open access: yesJournal 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

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