Vol. 44 No. 1 (221) (2010)

The present article considers the ore field with profile porphyrу-molybdenum-copper industrial mineralization. Its developed combined geological-structural, geophysical and ore-geochemical model expressed in the graphic form has allowed to clarify a number of questions: to define the position of polytypic mineralization in gravimetric anomalies, the horizontal and vertical zonality of the mineralization, the perspective sites with copper and gold mineralization, accompanying porphyry molybdenum-copper and to predict data on its depth.

The article deals with CIPW norm calculation of ultramafites of Armenia for revealing their initial mineralogical composition, which is masked by their total serpentinization. According to the IUGS International Terminological Commission classification by modern Opx–Ol–Cpx diagram (1991), the Oceanic Mantle Harzburgites dominates among the ultramafites of Armenia, what is peculiar for the HOT type ophiolites, formed in the fast spreading conditions. It is also cleared up that dunites with podiform cromite mineralization, lherzolites, wehrlites, pyroxenites and a various gabbro belong to the cumulative complex of the Armenian ophiolites.

In the article problems of intrinsic vulnerability assessment of aquifers operating for drinking water supply of Gavar City are discussed. Investigation methods, hydrogeological conditions of western part of the Sevan basin, as well as intrinsic vulnerability of aquifers on borehole data are brought in the article. It has been established, that water-table aquifer is poorly protected, but the confined aquifer is protected.

Noyemberyan Region lacks fresh water resources. Thus, the investigations show that the lack of fresh water in the mentioned region can be obtained through existing supply of source waters, especially by underground waters of submerged terraces of the Debed and the Koghb Rivers, in case if their abundance and control is basically provided.

It has been studied and valued five biggest river's drainage (Dzknaget, Masrik, Vardenis, Argichi, Gavaraget) for the spring flood (IV–VI), vegetation (IV–IX) and annual periods. For the studied period has been got multifactor close correlation links between spring flood drainage and air temperature, atmospheric precipitation and also between vegetation, annual periods and spring flood drainage, which expressed as equations and can be used for operative forecasts.

The aim of the paper is to analyse and evaluate maturity of winter wheat climatic conditions of the autumn period as well as to determine the optimal dates of wheat crop in the altitude zones of the RA. The optimal dates of the winter wheats determinate as the day or ten days period, when in autumn the average air temperature becomes less than 15℃, and the vegetation discontinues, when air temperature becomes less than 5℃.

In the article the processes proceeding in the earth's crust and in the upper mantle are examined, which lead changes of physical fields on the earth's surface. Their quantitative assessments are given which can be considered in the forecast of earthquakes.