نتایج جستجو برای: nehbandan
تعداد نتایج: 60 فیلتر نتایج به سال:
On the basis of mineralogy and geochemistry analysis, the listvenites in east of Iran are divided into three main carbonate, silica-carbonate and silica groups. Magnesite, dolomite, huntite and hydromagnesite are the major minerals in carbonate type. Silica listvenites contain mainly quartz, chalcedony and opal. Silica - carbonate listvenites contain minerals of carbonate and silica listvenites...
introductionclimate change has played an important role in all aspects of human life. therefore, climatepredictions in atmospheric general circulation models (gcm) will have particular importance.in this study, downscaling by a1b scenarios, ipcm4 and bcm2 of atmosphere generalcirculation models in lars-wg model are used for analysis of climate change impacts onmaximum and minimum temperature, s...
Abstract Millets are important agricultural crops for arid regions due to short life span and their resistance to salinity and drought conditions. In Iran, three main species of millets including proso millet (Panicum miliaceum), foxtail millet (Setaria italica) and pearl millet (Pennisetum glaucum) are cultivated in Shouthern Khorasan province, eastern Iran. In order to assess inter-specific...
The Lut Block (Eastern Iran) extends over 900 km in a north-south direction and is only 200 km wide in an east-west direction. It is confined by the Nayband fault and Shotori Range on the west. The eastern edge is bordered by the Sistan suture zone and Nehbandan Fault. The northern termination of Lut Block is the depression of Kavir-e-Namak and the Great Kavir Fault. The Makran arc, including ...
Balazard area is located in west of Nehbandan in the center of Lut Block. Eocene andesite and rhyolite cover most of the area. Subvolcanic rocks such as quartz monzodiorite porphyry, biotite quartz diorite porphyry, pyroxene hornblende diorite porphyry, hornblende pyroxene quartz diorite porphyry and hornblende diorite porphyry intruded the volcanic rocks. Evidence such as disseminated sulfide ...
Mahour polymetal deposit located west of Nehbandan, east-central Iran, formed in hypabyssal acid rocks. Mineralization occurs along a three-km-long vein. Three zones have observed in the ore, downward: 1) leached zone marked by malachite, azurite, hematite, goethite and limonite, 2) supergene zone characterized by bornite, covellite, and chalcocite, and 3) Hypogene zone containing magnetite, ch...
Desertification is the result of a series of important processes. Among them, climate change and human activity are the most important. Arid and semi-arid regions cover a vast area of Iran (85%). The hazard assessment of desertification and preparation of desertification intensity maps are key tools for management of desert regions. This research assessed the efficiency of the MICD model for ha...
The northeast region of Birjand is located in Lut structural and geological province. In this area we can distinguish two separate volcanic rock groups: intermediate to acidic volcanic rocks, including dacite, andesite, rhyolite and trachyandesite; and basic rocks, including basaltic andesite, mugearite and basalt. In this region, intermediate to acidic rocks, which belong to the Eocene-Miocene...
Taftan volcano, is located in about 100 Km South to Southeast of Zahedan, Sistan and Baluchestan province in southeast of Iran. On geological point of view, it is located at the end of Nehbandan-Khash flysch and North Makran structural zones. Field, petrographic and geochemical studies from different samples of rocks show that the volcano mostly composed of andesitic and dacitic rocks. These ro...
Background: The aim of this study was The application of nutritional patterns for developing a model for mental health through resorting to spiritual well-being. Methods: This was a correlational study and the statistical population of this study included all students of South Khorasan (studying at all branches of Islamic Azad University Birjand, Nehbandan, Ferdows, and Qa'en) during the ...
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