Geology, petrology, geochemistry and geochronology of Tarik Darreh plutonic rocks, northeastern Iran (original) (raw)
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Journal of Economic Geology, 2019
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Journal of Economic Geology, 2017
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Journal of Economic Geology, 2019
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Journal of Economic Geology, 2020
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In this study, Dunaliella has been isolated in Jun. 2014 from Hoz-e Soltan and Aran-va-Bidgol salt Lakes (Iran). The isolates have been identified morphologically with the aid of simple light and invert microscope after isolation and purification on their specific medium (Moh202). By using molecular techniques such as polymerase chain reaction (PCR) and amplification of 18S rDNA gene primers, further identification was done and morphological identification were confirmed. The isolation and molecular identification of the Dunaliella species from above-mentioned lakes revealed that, at least two species of Dunaliella, namely, D. parva and D. viridis exist in the studied area.
Technical Note: Study the Groundwater Nitrate Pollution in the Mian-Jungle Region, Fasa, Iran
2013
Nitrate in high dosage may cause serious diseases for both human beings and animals. WHO has set 45 mg/l as the maximum permitted level for nitrate in drinking water. High concentrations of nitrate in drinking water of the Mian Jungle region of Fasa, located 120 km south east of Shiraz, caused inhabitants to avoid using groundwater as the source of drinking water. Main objectives of this study were i) to determine the main sources of nitrate in the groundwater and ii) to introduce a feasible nitrate removal method in the region. Monthly groundwater sampling were carried out from April 2010 to March 2011 for 15 sources including water wells and outcropped springs. Nitrate, EC, and pH were measured in situ, however remaining parameters were determined in the lab using standard methods. Amounts of nitrate changed from 3.1 mg/l to 259.4 mg/l in diferent times and locations in this region. Results showed that an internal and external background of nitrate in groundwater are originating f...
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Journal of Economic Geology, 2017
Introduction Iron mineralization in Roshtkhar is located in 48 Km east of the city of Roshtkhar and south of the Khorasan Razavi province. It is geologically located in the north east of the Lut block and the Khaf-Bardeskan volcano-plutonic belt. The Khaf-Bardeskan belt is an important metallogenic province since it is a host of valuable ore deposits such as the Kuh-e-Zar Au-Spicularite, the Tanourcheh and the Khaf Iron ore deposits (Karimpour and Malekzadeh Shafaroudi, 2007). Iron and Copper mineralization in this belt are known as the hydrothermal, skarn and IOCG types (Karimpour and Malekzadeh Shafaroudi, 2007). IOCG deposits are a new type of magmatic to hydrothermal mineralization in the continental crust (Hitzman et al., 1992). Precambrian marble, Lower Paleozoic schist and metavolcanics are the oldest rocks of the area. The younger units are Oligocene conglomerate, shale and sandstone, Miocene marl and Quaternary deposits. Iron oxides and Cu sulfides are associated with igneo...
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Recently, sewage sludge as a cheap organic fertilizer and rich in nutrients has received considerable attention in many countries. The aim of this study was to determine the effects of Tabriz petrochemical factory ' s biological sludge on some soil biochemical and chemical indices such as the number of microorganism s, substrate-ind uced respiration, electrical conductivity, hot water-soluble carbohydrates and total nitrogen as well as their temporal variations in a calcareous soil selected from Mohaghegh Ardabili University ' s Research Station. The greenhouse experiment was done as a factorial randomized complete block design with three replicates. The first factor was the rates of applied sludge as 0 (control), 25, 50, 75 and 100 ton/ha of air dry soil and the second factor was the incubation times as 30, 90 and 180 days. Incubation of the treatments was done at 22±4 ◦ C and 0.75 field capacity moisture for 6 months. The results indicated that the all rates of applied slu...