Results 61 to 70 of about 1,210 (173)

Calcareous nannofossil biostratigraphy of Sarcheshmeh and Sanganeh formations at Qaleh Jegh and Yazdan Abad sections (West of Kopet-Dagh Basin) [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2017
1-    Introduction Kopet Dagh Basin is located on the northeast of Iran, extending over Iran, Turkmenistan and Afghanistan with a west-northwest to east-southeast trend.
Azam Gholami Fard   +2 more
doaj  

Evolution of mitochondrial relationships and biogeography of Palearctic green toads (Bufo viridis subgroup) with insights in their genomic plasticity. [PDF]

open access: yes, 2006
Taxa involving three bisexually reproducing ploidy levels make green toads a unique amphibian system. We put a cytogenetic dataset from Central Asia in a molecular framework and apply phylogenetic and demographic methods to data from the entire ...
Dujsebayeva, T.   +8 more
core   +1 more source

Systematic paleontology and taphonomic studies of Ypresian mollusks at the Kopet-Dagh Basin, NE Iran

open access: yesBoletín de la Sociedad Geológica Mexicana, 2019
espanolLos fosiles de invertebrados marinos se han considerado herramientas importantes para la recolecta de datos por edades y la interpretacion estratigrafica de los depositos de paleogenos de Asia Central, sin embargo, aun no se ha proporcionado ...
A. Salahi   +4 more
semanticscholar   +1 more source

Geochemical and Isotopic Characteristics of the Protolith of Eclogites from the North Shahrekord Metamorphic Complex: Evidence of Late Neoproterozoic Back-arc Basin development in Sanandaj-Sirjan Zone

open access: yesJournal of Economic Geology, 2019
Introduction All of the major tectonic zones of Iran, except for the Kopet-Dagh, contain Pan-African crystalline basement. Subduction of the Proto-Tethys at about 630 Ma caused Cadomian arc– and backarc magmatism in the northern margin of Gondwana ...
Forough Malek Mahmoudi   +3 more
doaj   +1 more source

Role of the Allahyarlu ophiolite in the tectonic evolution of NW Iran and adjacent areas (Late Carboniferous — Recent) [PDF]

open access: yes, 2014
In this paper we reconstruct the tectonic evolution of Eastern Turkey, the Lesser Caucasus and NW-N Iran from the Late Carboniferous to Recent. NW Iran is one of the most complicated regions of the country, that with Turkey and the Lesser Caucasus is ...
Ajirlu, Majid Sudi, Moazzen, Mohssen
core   +1 more source

WARM TO COLD WATER CARBONATE FORMATION DURING THE ORDOVICIAN AND THE JURASSIC: EXAMPLES FROM IRAN, AUSTRALIA, AND ENGLAND [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 2003
Isotope data from bulk carbonates, micrite, marine calcite cements, non-skeletal grains and brachiopods indicate deposition of a wide spectrum of warm to cold water carbonates during the Ordovician and the Jurassic.
doaj  

Analogue Experiments of Subduction vs. Collision Processes: Insights for the Iranian Tectonics

open access: yes, 2005
We investigate, using laboratory experiments, the behavior of subduction-collision transition. These experiments help understanding of the tectonics at the transition between the Zagros collision ranges and the Makran emerged accretionary prism in south ...
Bellier, Olivier   +3 more
core   +1 more source

Modern pollen rain–vegetation relationships along a forest–steppe transect in the Golestan National Park, NE Iran [PDF]

open access: yes, 2009
Pollen rain-vegetation relationships were studied over a forest-steppe transect in Golestan National Park, NE Iran. The surface pollen percentages were compared to the vegetation composition of the respective vegetation types in 18 sampling points using ...
Akhani   +51 more
core   +1 more source

Thermal Analysis: A Complementary Method to Study the Shurijeh Clay Minerals [PDF]

open access: yesInternational Journal of Mining and Geo-Engineering, 2015
Clay minerals are considered the most important components of clastic reservoir rock evaluation studies. The Shurijeh gas reservoir Formation, represented by shaly sandstones of the Late Jurassic-Early Cretaceous age, is the main reservoir rock in the ...
Golnaz Jozanikohan   +3 more
doaj  

Groundwater Recharge Assessment in the Karstic Aquifers of North Khorasan, Iran in APLIS Method [PDF]

open access: yes, 2017
In order to optimize consumption, maintenance and control of underground water, an estimation of the groundwater recharge is highly important. Therefore, this research investigates the aquifers in North Khorasan province using APLIS (Applied Physics ...
Alem, Hossein   +2 more
core   +2 more sources

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