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Revista Geoaraguaia

Journal Papers (3) Details Call for Paper Manuscript submission Publication Ethics Contact Authors' Guide Line
1 MAGMATIC DIFFERENTIATION EVIDENCES AND SOURCE CHARACTERISTICS USING MINERAL CHEMISTRY IN THE TORUD INTRUSION (NORTHERN IRAN) , Abdollah Yazdi Assistant Professor, Department of Geology, Kahnooj Branch, Islamic Azad University, Kahnooj, Iran yazdi_mt@yahoo.com    Elham Shahhosini Assistant Professor, Young Researchers and Elite Club, North Tehran Branch, Islamic Azad University, Tehran, Iran   Rahim Dabiri Associate Professor, Department of Geology, Mashhad Branch, Islamic Azad University, Mashhad, Iran    Hamid Abedzadeh Instructor, Department of Mining Engineering, Kahnooj Branch, Islamic Azad University, Kahnooj, Iran
The granitoid bodies is located 120 km north-east of Shahrood town. The area is structurally located in the north of the central Iranian zone. These activities occurred during the Upper Eocene stage. This article describes a compositional study on biotites, plagioclase of monzonites of the granite rocks of Torud area and elucidates the geotectonic and geothermobarometry conditions. The main minerals of granitoids are quartz, plagioclase, and K-feldspar. Other constituents of these rocks are biotite, amphibole, sphene, and opaque minerals. Various textures such as granular, myrmekite and graphics are observed in these rocks. Based on the geochemistry studies Plagioclase monzonite, Quartzmonzonite rocks of range anorthoclase and granite rocks are in the range of albite. Biotite compositions in the granitoid bodied depend mostly on temperature of crystallisation and oxygen fugacity (ƒO2) and compositions of magmas from which they have been crystallised. The calculated Ti in biotite temperatures for the Troud granitoids are in the range of 530-900 °C. The biotite compositions used to discriminate tectonic settings of granitoids. The biotite compositions were used to discriminate the tectonic setting of the plutons. biotites granitoid rocks are the type of magmatic, rich in iron- magnesium, anorogenic alkaline and areas tensional. Based on the Major and trace element granitoid rocks different trends is show by Rb with Si and Ba with Si indicate occurrence of fractional crystallization processes (AFC). Based on the petrography, geochemistry and desert studies of the calc-alkaline, metaluminous, and series I granitoids, it can be inferred that the volcanic arcs of the continental margin are the orogenic areas that have originated from the partial melting of crust igneous rocks. The intrusions appeared to be related to calc-alkaline orogenic suites. granitoid rocks are associated with the subduction zone neotethys.
2 PETROLOGY AND THE ORIGIN OF THE INTRUSIVE MASSES OF THE EAST OF JIROFT , Farbod Faraji Department of Geology, North Tehran Branch, Islamic Azad University, Tehran, Iran    Afshin Ashja-Ardalan Department of Geology, North Tehran Branch, Islamic Azad University, Tehran, Iran afshinashjaardalan.@yahoo.com   Moosa Kalimi-Noghreeian Department of Geology, Isfahan University, Isfahan, Iran   Hamidraza Jafari Department of Geology, Sirjan Branch, Islamic Azad University, Sirjan, Iran
The study area with an area of 55 km2 is located south east of Kerman province and in the area of Jiroft city. This area is structurally and geological division in the Urmia-Dokhtar zone. The Urmia- Dokhtar volcanic belt part of the Alpine-Himalayan is a volcanic belt. Several intrusive bodies are in the east of Jiroft, which is part of Jebalbarez Batolite andigneous actives of JabalBarez area have occurred in four stages. The third magma activity of the region occurred in Oligomiocene and occurred during three phases. its lithological composition includes synogranite and Monzogranite, granodiorite, diorite, quartz monzonite. Quartz, Plagioclase and Potassium feldspar are the major minerals in granites. Biotite, Amphibole, espen, opac minerals are other manufactores of these rocks. Various types of granular, myrmekitic, Graphic and perthite textures are observed in them. Regarding field studies, petrographic, and geochemical studies, granite rocks of meta-aluminum and granitoid components of Iseries are volcanic arc of the continental margin of orogenic region that originate from melting of shell-shaped igneous rocks. granitoid specimens are normalized to the original mantle, chondrite, upper and lower crust. The samples show enrichment LREE and less enrichment of HREE. The composition of the samples in terms of these incompatible elements is similar to the medium composition of the crust. Samples in tectonic environment diagrams are located wothing the VAG range. igneous rocks are associated with the subduction zone neotethys. The magma subtraction in the magmatic room in the first stage leads to the formation of quartz- diorite to granodiorite composition, and in the second phase, with the continuation of magmatic subtraction, the magma composition is more acidified than before and the rocks with granodiorite to granite composition composed. In the third stage, with the continuation of the subtraction process, the composition of magma is highly acidic consists of granite and alkali granite stones.
3 INVESTIGATING AMOUNT OF LEAKAGE, SEDIMENT AND DURABILITY IN GEOSYNTHETIC COVER OF PUMPING CHANNEL 3 AT IRRIGATION NETWORK OF MOGHAN , Karamat Akhavan Giglou Professor, Agricultural Engineering Research Department, Ardabil Agricultural and Natural Resources Research and Education Center, AREEO, Ardabil, Iran   Milad Kheiry Ghojeh Biglou Master Graduate of Civil Engineering-Water and Hydraulic Structures, Department of Civil Engineering, Parsabad Moghan Branch, Islamic Azad University, Parsabad Moghan, Iran eng.miladenoor@gmail.com   Babak Mehrparvar Master Graduate of Civil Engineering - Hydraulic Structures, University of Mohagheg Ardebili, Iran   Ahmad Shokat Naghadeh Master Graduate of Irrigation and drainage, University of Tarbiat Modarres, Iran
Controlling the losses of water leakage from channels and reservoirs is essential in order to protect the limited water resources of country. Yet, several methods have been used to control leakage and nowadays using the geosynthetic covers, such as geomembrane sheets, have been considered. The purpose of this research is to evaluate the leakage rate of channel with geosynthetic layer. In this research, at first the existing problems in different stages of designing and implementing the geomembrane covers in canals were studied. Then, the leakage rate of this type of covering was investigated in different conditions by using the input-output method. After investigating the sources, among the channels with geosynthetic covers in the Moghan irrigation network (it is in Iran), the Moghan pumping channel 3 was selected due to importance and technical features, and field and laboratory studies was done in terms of hydraulic properties, control of leakage, durability and reviewing the executive issues. Based on the results of experiments, the average of leakage discharge rate was reported 46.86 liters per day and per square meter. This leakage rate is moderate in compared with other studied geosynthetic covers in other places (14-69 liters per day and per square meter). However, it seems necessary to investigate leakage rate in different parts of network and to determine its time changings for proper maintenance and using the geosynthetic materials is recommended to prevent water loss from similar channels.