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p. 21−31
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Na2O and Rb/Sr-Ba/Rb diagram (Furman and Graham, 1999) reveal a mantle source involvement of phlogopite (Rosenthal et al., 2009).ConclusionBasic magma of Kuhrang salt dome doleritic rocks, show sub-alkaline nature (tholeiite) with various K2O contents. It has been formed in tectonic setting of intra- continental rift due to low partial melting of phlogopite spinel lherzolite of asthenospheric mantle. ]]>
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2 show aragonite was an original carbonate mineralogy. High Mn values suggest the effect of meteoric diagenesis on the studied samples. Higher Sr values in some of the samples may indicate original aragonite mineralogy and low impact of diagenetic processes. The high Sr/Ca and Mn variations in the studied carbonates represent the effect of meteoric diagenesis in closed and open diagenetic systems. ConclusionSr/Mn versus Mn variations in samples fall within and very close to aragonite field of the Mozduran Formation due to higher impact of meteorite diagenesis. This probably shows the effect of meteoric diagenesis with higher water - rock interaction (W/R) in an open diagenetic system. Relatively low Sr/Mn values show an open diagenetic system for studied carbonate samples. The Sr/Ca ratio in the studied carbonates show a relatively open diagenetic system with high water- rock interaction.]]>
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p. 72−88
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p. 89−108
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p. 109−129
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p. 130−151
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p. 152−168
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p. 169−188
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100 years (in accordance with the Ministerial code also known as Mashanir Code). Therefore calculated values of snow and ice loads for 10 m (less than 66 kW) and 35 m (above 220 kW) elevations were not significant, Based on the results, it is suggested that with the establishment of automatic weather stations in the area and field and laboratory studies, more detailed results will be obtained in future studies.ConclusionIn this research, the ice thickness statistical parameters with multi-year return periods were evaluated, using meteorological data and simulation methods. The meteorological data was provided by Mountain Engineering Laboratory and Research Institute. Finally new nominal values were suggested after comparing them with various return periods. In the case of Baladeh, calculated values of snow load and ice for a height of 35 meters, with different return periods from 50 years onwards, the maximum amount of ice exceeds the nominal value (40) and was likely to cause damage to transmission lines. Therefore, for the design of power lines with a return period of less than 50 years, Baladeh region is one of the heavy areas and with a return period of more than 50 years, it is one of the super heavy areas.For the Siahbisheh area, the amount of snow and ice for the 50 to 100-year return period is moderate, and for return periods greater than 100 years, the heavy areas are less than the nominal average value defined in the Ministerial code(Mashanir). In the Kojour area, which according to Mashanir is a superheavey region, for return periods from 50 years onwards the maximum amount of ice thickness exceeds the Mashanir code. Therefore the probability that it could damage the transmission lines is greater than the nominal value (40). Hence, for the design of power lines with a return period of less than 50 years, the Kojour region is a heavy area and with a return period of more than 50 years, it is a heavy area.]]>
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p. 237−251
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