Volume 18, Issue 55 (No.1-صفحات انگلیسی ار 1 تا 23 2001)
2001, 18(55): 54-65 |
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Genesis of Ahangaran Pb-Ag Deposit, Malayer, Iran. Journal title 2001; 18 (55) :54-65
URL: http://jsci.khu.ac.ir/article-1-1104-en.html
URL: http://jsci.khu.ac.ir/article-1-1104-en.html
Abstract: (5024 Views)
Ahangaran lead-silver deposit is located 25 km southeast of Malayer on Malayer Arak road. The deposit is tectonically situated in Sanandej-Sirjan zone. Mineralization in Ahangaran mine occurs between sandstone and dolomite units, which is expanded into dolomite unit. The host rock of the deposit is limestone, which is early Cretaceous in age and apparently mineralization, occurs in the same time. Ahangaran deposit has been conformed of two parts including statiform and epigenetic vein type. Studies on the minerals such as pyrrhotite, chalcopyrite, and sphalerite reveal that the veins have formed in high temperature, while the stratiform zone was formed in a low temperature sedimentary environment. Mineralogical and geological characteristics of the Ahangaran deposit indicate the deposit to be a sedimentary exhalative type and the relationships between Ag and Pb confirm this idea. As a whole it can be said that the Ahangaran deposit is a polygenetic deposit which is formed in four stages: hypogene epigenetic, hypogene syngenetic, supergene epigenetic and supergene syngenetic. volume of normal saline. When nevborns became two months old, randomly from each litters, one male and one female were selected. AT-complex maze was used first to test learning abilities by counting their errors and also measuring the time of reaching the goal. To test the effects of Olibanum on long-term memory, the examined animals were left free of any test for a period of 20 days. Then, they were tested again by the same maze. The results indicating that, in comparison with control animals, administration of Olibanum aqueous extraction specially 5% solution could significantly increase (p<0.00l) the rate of learning abilities and long-term memory as well.
Type of Study: S |
Published: 2001/06/15
Published: 2001/06/15
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