Dozdozan plain is located in 80 kilometers south-east of Tabriz and is one of the
most fertile plains of East Azerbaijan. The main economy of its residents is based on
agriculture and as a result of the scarcity of surface water resources; agricultural sector
is the More
Dozdozan plain is located in 80 kilometers south-east of Tabriz and is one of the
most fertile plains of East Azerbaijan. The main economy of its residents is based on
agriculture and as a result of the scarcity of surface water resources; agricultural sector
is the major consumer of ground water. In this study, the application of Fuzzy Set theory
for evaluation of ground water quality for agricultural purposes is used. In this research,
seven ground water parameters from 50 wells were measured from 2012 to 2013 in
Dozdozan plain. Based on Fuzzy Water Quality Model, the ground-water quality is
classified in three categories; desirable, acceptable and unacceptable. Results showed
only 17 samples from 50 wells come in desirable class with certainty level of 63.6 to 84
percent. About 28 samples classified in the acceptable category whose certainty level
ranged from 48 to 64.5 percent and the remaining five samples were in not acceptable
category with the maximum certainty level of 13.7 percent.
Manuscript profile
Eocene- Oligocene intrusive stock of basic bodies of south Germi are intruded into and cropped out in Eocene basaltic lavas. Studied gabroic intrusive rocks generally show granular texture with assemblages characterized by Cpx + Pl + Bi + Amph. Pyroxenes have augitic co More
Eocene- Oligocene intrusive stock of basic bodies of south Germi are intruded into and cropped out in Eocene basaltic lavas. Studied gabroic intrusive rocks generally show granular texture with assemblages characterized by Cpx + Pl + Bi + Amph. Pyroxenes have augitic composition, plagioclase have labradoritic and amphiboles have pargasitic compositions. The studied amphiboles show (Na+K)A ≥ 0.5 with variable amount (0.57 - 0.99), Fe+3 content ranges from 0.00 to 1.17, also AlVI ranges from 0.00 to 0.68 and AlVI<Fe+3. Chemical composition of amphibole can be used in determination of magma genesis. Results of thermobarometric studies indicate that the amphiboles formed at temperature range of 750oC -885 oC and pressure range of 5.96 – 8.36 Kb, that coincide with depth of 18.5 – 25.9 km. Also using the amphiboles and coexisting plagioclases thermometer shows temperature range from 758 oC to 865oC. Chemical composition of amphibole minerals with Fe2+/(Fe2++Mg) ratio from 0.11 to 0.32, variable oxygen fugacity (-5.83 - -6.34) and water content (3.09 – 4.16%) shows that they formed from sub-alkaline magma. Chemical studies of amphibole crystals indicate that they formed during a subduction related magmatic activity.
Manuscript profile
