نتایج جستجو برای: urumieh
تعداد نتایج: 107 فیلتر نتایج به سال:
sakhtehesar mountain is located in urumieh-dokhtar magmatic belt and is composed of volcanic and subvolcanic rocks (pliocene andesite to dacite) which intruded the volcanics and pyroclastics of paleocene age. three alteration zones including potassic, phyllic and propylitic are recognized in the area. in this paper, the mineral chemistry of magmatic and primary biotite and the mineral chemistry...
Natanz, 1:100000 geological map, is located in northeast Isfahan, in the Urumieh-Dokhtar structural zone. This sheet is a prospective area for Cu, Zn and Pb mineralization. Spatial distribution of geochemical anomalies for mineralization was identified; using pathfinder elements statistic method. The sample from catchment basin technique was applied on stream data. Then threshold elements were...
Deterioration of concrete, which is mainly due to ignorance of environmental and service conditions, causes considerable costs for the construction industry. With this in mind, in this paper, results of investigation into the major causes of concrete deterioration in the Urumie Lake are presented. For the purposes of this investigation, samples were obtained by mixing two types of cement (OPC t...
More than 20 tonalitic to granodioritic plutons with Oligo-Miocene age had intruded the Eocene volcanic rocks, in south-east of Urumieh- Dokhtar magmatic belt, north-west of Shahre-Babak. These rocks show granoporphyritic texture and consist of phenocrysts of plagioclases (An21-An44), with normal to reverse zoning, magnesio hornblende and tshermakite and biotites. The matrix consists of fine-gr...
The Avaj Oligocene volcanic – plutonic complex is part of extensive Cenozoic magmatic activity within the Urumieh-Dokhtar arc Iran. We use whole rock geochemistry, mineral compositions and crystal size distributions (CSD) in a suite co-genetic basalt, basaltic andesite gabbro to determine their petrogenesis. Ca-rich cores plagioclase (An79-86) overlap empirically modelled compositions, indicati...
Study area is located in Kerman Province and NE Baft city near to Rabor town. This section is in the structural division of Iran classified as Urumieh-Dokhtar magmatic belt which in Kerman area is called- Dahaj-Sarduieh belt that extended parallel to Urumieh-Dokhtar magmatic belt. These rocks comprise of andesite, andesite-basalt, dacite and rarely basalt and trachy-andesite with Eocene age tha...
توده های نفوذی مهرآباد واقع در جنوب شرق اردستان، با سن تقریبی الیگوسن- میوسن، در بخش میانی کمربند ماگمایی ارومیه - دختر جای گرفته اند. این توده ها با ترکیب سنگ شناسی گرانیت، گرانودیوریت، تونالیت و کوارتز مونزودیوریت، در سنگ های آتشفشانی ائوسن منطقه تزریق شده اند. توده های نفوذی مورد مطالعه با ماهیت کالک آلکالن و متا آلومین تا جزئی پرآلومین، جزو سنگ های گرانیتوئیدی نوع i محسوب می شوند. الگوی تغی...
Chah Torsh intrusive body in S-W of Nadushan is a small part of extensive magmatism of Oligo-Miocene age in Urumieh-Dokhtar magmatic belt. This is the largest intrusive mass of SW of Nadushan complex which are all outcropped as masses cut through Eocene volcanics. The Chah Torsh intrusion consists of two phases with porphyry and granular textures. Geochemical properties of two phases on the bas...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید