Vol. 51 No. 1 (242) (2017)

In the article the results of mineralogical, geochemical and genetic studies are presented which have been conducted in Phkhrut ore deposite of Zangezur ore region of RA. For the first time the molybdenite-chalcopyrite, quartz, quartz-pyrite, quartzcarbonate- base metal, quartz-arsenopyrite and quartz-carbonate-gypsum paragenetic mineral associations are described and vertical zonation of mineralization is revealed. All these types of ores are gold-bearing. In the ores gold is presented as own mineral (native gold, petzite, calaverite, krennerite) and isomorphic form in sulfides, particularly in pyrite. Along with gold Ag, Bi, Zn, Cu, Pb, Cd, Se, Te, Ge, Ga, in are interesting. The bulk of these elements form their own minerals, the other part in the form of isomorphic impurities are present in the sulfides and rock-forming minerals. By mineral composition, geochemical features and conditions of their formation, Phkhrut ores belong to quartz-gold sulfide formation.

In the article copper-porphyry ore fields uncovered by varying degrees of erosion are described. On eroded Dastakert ore field copper-porphyry mineralization is opened, but on Arevis less eroded part, accompanying gold-sulphide mineralization is preserved. Within the first ore field the two different age copper-porphyry mineralizations are manifested.

Based on the results of the analysis carried out research, it was revealed that the natural factors, particularly the climate change, cannot significantly affect the groundwater regime in the Ararat Valley. The recorded and expected negative changes in the regime are mainly due to technogenic factors, including unsustainable use of groundwater resources for fish farming and irrigation purposes. In order to resolve the current issues and avoid more serious social-economic problems, it is necessary to initiate and implement legislative, institutional and technical comprehensive measures aimed at rational and effective use of groundwater resources in the Ararat Valley.

In the article the analysis of the relationship between aperiodic variations of geophysical fields and neotectonic processes observed on geodynamic testing polygon in the Republic of Armenia. The analysis makes it possible to highlight certain active zones where there is a definite correlation relationship. The study of field variations will enable the prediction of volcanic and seismic phenomena that are the results in the marked variations.

The paper considers questions of the geological position and age of cutting bodies of rhyolites (albitophyres). The new data we obtained allow us to consider rhyolite bodies as units having different ages, among which it is possible to identify the Bajocian, the Late Jurassic-Early Cretaceous, and the Late Eocene ones (identified by us for the first time in Zhang and Koroukh boundary areas having the absolute age estimation of $42–46~Ma$). Considering the relationship between rhyolites and copperpyrite ores, we consider copper-pyrite ores, as contrary to earlier works and opinions, as formations of an earlier age than rhyolites based on the evidence of multiple xenoliths of copper-pyrite ores present in rhyolites. On the other hand, the polymetallic ores cut through the rhyolite bodies attesting the actual time gap, separating copper-pyrite ores from poly-metallic ores, and the multi-stage character of the mineralization.

In the article the issues regarding of the Ararat Marz rural population and settlements forming, dynamics (1831–2015) and the modern situations have been discussed. A special significance has been given to the changes in the rural resettlement structure of the province by the settlements population size, the distribution of population and settlements above sea level, as well as by the production specialization and socioeconomic development problems of the rural settlements.

Service sphere has its main role in the organization of social life. Due to it, human gets satisfaction for his or her needs. And for organization of such system, it is important to explore and estimate its scientific mechanism. So, it gives opportunity to estimate social life and needs cooperation.

Development and implementation of innovative technologies in the field of service plays a vital role in satisfying the needs of society. Theories and concepts developed in relation to the sphere of material production can be applied to innovation in the service sector. This approach to innovation can be called assimilation. But at the same time, the trajectory of the development of technological innovation in service has significant specificity. The specificity of services dictates a new approach to innovation in service. This approach can be called demarcation. Overcoming the differences between the two countries and the development of unified complex approach will create a common platform for the development of a comprehensive innovation policy in the sphere of service.

Based on the analysis, generalization and summary of statistical data the dynamics of RA population by sex and main age groups is presented in the article. The analysis by sex and major age groups distribution of RA population, the revelation of regional differences and problems have been done based on the census of 2011 and current accounting of 2015.

The article deals with the problems of recreational use of natural resources based on the example of two historical and cultural monuments located (Marmashen Monastery, Tirashen archaeological complex) in the territory of Shirak Marz of the Republic of Armenia. As a result of the research the best recreational loads have been counted.

In the article temporal and spatial variability of average air temperature in Armenia in 1961–2012 are analyzed. The long-term measurements data of air temperature from 41 stations of national meteorological services of RA have been studied and compared with baseline period (1961–1990). A graph of the change of mean temperature is built and a map of distribution of temperature changes is compiled.