نتایج جستجو برای: kopeh dagh
تعداد نتایج: 154 فیلتر نتایج به سال:
the sarcheshmeh formation is a shaly sequence of lower cretaceous age (aptian) which is deposited in koppeh-dagh sedimentary basin and conformably overlies and underlies the tirgan and sanghaneh formations respectively in the toos well # 1. lithologically, this formation has a thickness of 177m and consists mainly of marl, shale and shaly limestone. palynological studies resulted in identificat...
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. this isotopic interpretation is supported by warm to cold climatic models proposed for the ordovician and the jurassic. these carbonates formed during the greenhouse mode (condition...
Aitamir Formation (Albian–Cenomanian) crops out in the Kopet-Dagh basin in north-east Iran.This formation is mainly composed of sandstone, shale, siltstone, and several shellbeds. One of the major components in all of the siliciclastic facies is glaucony. They are autochthonus and parautochthonus types which have formed in suitable physico-chemical conditions and replaced quartz, chert, feldspa...
the kalat formation is one of units in the kopet dagh sedimentary basin and so far have been studied by other fossils (case study) (palynomorphs, calcareous nanoplankton and foraminifera). according to the important ostracoda in diagnosis paleoecology and paleoenvironment, in this study, investigated ostracoda in shale units of the kalat formation in chahchaheh section have been studied for the...
in this study, depositional environment and provenance of sandstones of the surijeh formation (lower cretaceous) in the abgarm section in the kopet-dagh basin are investigated. analysis of sedimentary facies in this section shows that there are two clastic (continental and coastal plain) and two carbonate (coastal plain) facies associations are present. the results of modal analysis and geochem...
Aitamir Formation (Albian-Cenomanian) is one of the stratigraphic units in the Kopet Dagh basin that consists of glauconitic sandstone, siltstone, shale and limestone. Glaucony is present in all lithofacies of this formation and varies based on degree of maturity and color ranging from pale to very dark green. Percentage of glaucony in sandstones and shell beds ranges from 1 to 40, poorly to mo...
The Upper Jurassic (Kimmiridgian-Tithonian) Mozduran Formation in the Kopet-Dagh basin is mainly composed of limestone and dolomite with minor amounts of silisiclastic and evaporaite sediments. The purpose of this study is to identify and differentiate dolomite types in this formation, north of Chenaran. Based on petrographic studies, two types of dolomitization (fabric selective and pervasive)...
The Upper Cretaceous strata were studied in a composite stratigraphic section named here Padeha-Baghak section in east of Koppeh-Dagh basin, north east of Iran. In this study, palynostratigraphy, palynofacies and depositional environment history of Abderaz Formation were integrated with sequence stratigraphy. Determination of sea level history and sequence units of the Abderaz Formation using s...
The study area is located in the northeast of Iran. Miankuhi Formation is 500m thick and comprises homogeneous shales, brown granular sandstone and siltstone. In this study, 45 samples were taken from Miankuhi shales and sandstones in order to determine their tectonic origin by using a polarizing microscope. Samples were analysed by X-Ray Fluorescence (XRF) method to determine their chemical...
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