مرور Iranian Journal of Earth Sciences بر اساس عنوان
در حال نمایش موارد 1 - 20 از 203
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Accumulation of lead, antimony and arsenic in soil and water in Khunik gold prospecting area, Eastern Iran (Islamic Azad University, Mashhad Branch, 2023-01-01)Khunik gold prospecting area is located in the eastern part of Lut block, eastern Iran. Main rock units are andesite, agglomerate, latite, dacitic lava, rhyodacite, volcanic breccia and conglomerate. Geological and geochemical ...
 
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Admixture-elements and their use as geochemical indicators for search of buried pyrite ores in the Greater Caucasus (Azerbaijan) (Islamic Azad University, Mashhad Branch, 2011-10-01)Heterogeneous pyritaceous-polymetallic and copper-zinc-pyrrhotine deposits on the South slope of the Greater Caucasus are located in the Lower-Middle Jurassic terrigenous sediments. They were formed under a wide ...
 
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Age, microfacies and sedimentary environments of the Sirenia-bearing deposits of the Qom Formation in Central Iran (Islamic Azad University, Mashhad Branch, 2021-04-01)Sea cows are exceptional fossil vertebrates recently discovered in the deposits of the Qom Formation. Yet, the Sirenia-bearing limestones are still poorly understood in terms of detail paleoenvironmental and micropaleontological ...
 
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Analysis of loess sediment texture in Golestan province according to the microstructure parameters (Islamic Azad University, Mashhad Branch, 2019-10-01)This study was performed to recognize the loess texture in Golestan Province, Iran using the microstructure analysis according to the electron microscopic images. Loess microstructure study allows for investigating the ...
 
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Ancient Gold Mining Activities in India - An Overview (Islamic Azad University, Mashhad Branch, 2015-04-01)Gold was obtained through washing or panning of the river sands during initial periods of civilisation. With the advent of knowledge of metallurgical processing of ores it was recovered through mining of in-situ ...
 
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Apatite Application to Investigate Magmatic Evolution of Zouzan Granites, NE Lut Block (Islamic Azad University, Mashhad Branch, 2012-04-01)Apatite minerals of I-type Zouzan granitoids and typical garnet-bearing S-type granites have been analyzed by electron microprobe to define trace element concentrations and compare them in different granites. Zouzan ...
 
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Application of C-A fractal model and exploratory data analysis (EDA) to delineate geochemical anomalies in the: Takab 1:25,000 geochemical sheet, NW Iran (Islamic Azad University, Mashhad Branch, 2018-10-01)Most conventional statistical methods aiming at defining geochemical concentration thresholds for separating anomalies from background have limited effectiveness in areas with complex geological settings and variable ...
 
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Application of glauconite and fossil palynomorphs in reconstructing the Liassic paleogeography just before the opening of the Gulf of Mexico (Islamic Azad University, Mashhad Branch, 2010-10-01)Red beds, conglomerates and salt were considered azoic and problematic rocks, but Paleopalynology and Inorganic Geochemistry proved to be useful for placing them in time and space. In the early last century, in Mexican ...
 
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Application of landsat imageries for mapping post-earthquake landslide, case study: 2012 Ahar-Varzegan earthquake, NW Iran (Islamic Azad University, Mashhad Branch, 2020-10-01)The 2012 Ahar-Varzegan earthquake and its aftershocks have not only caused huge damage with a severe loss of life and property but also induced many geo-hazards with the major type of collapse, creep, slip, debris flow, ...
 
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Application of mine waste for wastewater treatment: Efficient organic pollutant removal (Islamic Azad University, Mashhad Branch, 2017-10-01)In this research, a high porous silicate mining waste that was prepared from Syah Kamar Polymetal Porphyry mine in order to malachite green dye (MG) removal has been applied. The characterization of this natural mineral ...
 
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Application of mineral chemistry in determining magma fertility of the Tarom northern and southern intrusions, NW Iran (Islamic Azad University, Mashhad Branch, 2022-10-01)The Tarom metallogenic belt of the Alborz magmatic belt in NW Iran is characterized by two alignments of intrusion in its northern and southern parts. The northern intrusion is younger than the southern one. Mineral chemistry ...
 
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Application of multifractal modeling for separation of sulfidic mineralized zones based on induced polarization and resistivity data in the Ghare-Tappeh Cu deposit, NW Iran (Islamic Azad University, Mashhad Branch, 2015-10-01)The aim of this study was to identify various sulfidic mineralized zones in the Ghare-Tappeh Cu deposit (NW Iran) based on geo-electrical data including induced polarization (IP) and resistivity (RS) using the concentration-volume ...
 
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Artificial Intelligence for prediction of porosity from Seismic Attributes: Case study in the Persian Gulf (Islamic Azad University, Mashhad Branch, 2011-10-01)Porosity is one of the key parameters associated with oil reservoirs. Determination of this petrophysical parameter is an essential step in reservoir characterization. Among different linear and nonlinear prediction ...
 
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Assessment of Anthropogenic Activities on the Water Quality of Froumad Plain Based on Qualitative Indicators (Islamic Azad University, Mashhad Branch, 2015-04-01)Tested water samples taken from the ophiolite region of Forumad show that most of the concentrations of calcium, magnesium, sodium, sulfate, potassium, bicarbonate, and nitrate elements are in the standard range. ...
 
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Assessment of excavability classification in a Limestone Quarry: A case study from Bayburt, Turkey (Islamic Azad University, Mashhad Branch, 2022-10-01)Excavability is a measure of material which can be excavated with classical excavation equipment. Studies to decide the rock excavability characteristics contribute to the suitability of engineering projects. In this study, ...
 
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Assessment of Heavy Metal Contamination in Soils around of Khash Cement Plant, SE Iran (Islamic Azad University, Mashhad Branch, 2013-10-01)20 soil samples collected from the vicinity of the Khash Cement plant, Iran, were analyzed for As, Cd, Co, Cr, Cu, Mn, Mo, Ni, Pb and Zn using ICP-OES. The results revealed that the metal distribution were in a ...
 
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Assessment of the potential areas for underground dam construction in Roomeshgan, Lorestan province, Iran (Islamic Azad University, Mashhad Branch, 2020-01-01)One of the methods for dealing with the problem of water shortage and the decline of groundwater levels in the arid areas is the construction of underground dams. It is difficult to make a decision about suitable locations ...
 
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Assessment of type and usage of thermal water in Mahalat, Markazi province, Iran (Islamic Azad University, Mashhad Branch, 2015-10-01)In this study, water samples were collected from 10 thermal and non-thermal springs of Mahalat setting during four periods in 2011. The discharge rates of these springs vary from 2 l/s to 45 l/s and their temperature range ...
 
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Assuring Sustainable Economic Benefit for Farmers by Using Ground Water in Semi-Arid, Hard Rock Areas in India & the Role of UNESCO-IUGS-IGCP Project 523 (Islamic Azad University, Mashhad Branch, 2012-04-01)Out of about 1.2 billion people in India, 68% people live on agriculture as their main occupation. Ground water is therefore an important resource which provides over 70% of rural drinking water supply and about 50% ...
 
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Belemnite biostratigraphy of the upper Jurassic to lower Cretaceous strata in the Surghar range, NW Pakistan: Systematic and Paleobiogeographic implications (Islamic Azad University, Mashhad Branch, 2021-01-01)Four belemnite genera and twelve age-diagnostic species were identified from the from Upper Jurassic–Lower Cretaceous sequence of the Chichali Formation, northwest Pakistan. Four local biozones were established based on ...
 



