Vol. 49 No. 2 (237) (2015)

A new type of portland cеment has been obtained by using troctoliteharzburgite rocks of northeastern part of Sevan Lake, the strength of which is nearly 20% higher than ordinary portland cement. The obtained binder will give possibility to save more than 20–30% cement clinker and simultaneously will increase the strength of the cement stone.

In the Vank granitoids turmalin is spread unevenly regardless of magmatic and tectonic cracks. The three types of turmaline: magmatic (porphyric inclusions in the granitoids), pneumatolytic (radial-rays aggregates in the andesits at the top of Vank's massive) and hydrothermal (quartz-turmaline veins in the exocontact gabbros and monzonite), are genetically associated with magmatic and post magmatic processes of the boron enriched Vank's intrusive.

In this article the nature of typical errors of prospecting works is considered. Values of specific capital investments and the cost price of basis cycles of mountain-concentrating manufacture are resulted, with the help of which it is possible to be guided at detailed calculations.

The article deals with combined geological-structural, geophysical, oregeochemical graphic model of Hanqavan ore field. Due to the developed model, it is possible to determine the position of different types of mineralization within the gravity anomalies of the ore field and make some conclusions about its prospects. Once again, the presented model proves, that porphyry copper mineralization is characterized by maximum negative values of the local gravitational field.

To study the peculiarities of seismic regime of the territory of Ararat seismic polygon analysis of M ≥ 2.5 earthquakes that occurred between 1962 and 2012 was performed using the catalog of the Seismic Protection Survey of the Ministry of TA and ES of RA. The territory within 70 km radius from Yerevan was studied.

The paper presents the methodology and results of geoecological zoning of Yerevan and surrounding areas. Unmodified, modified and highly modified areas have been outlined by the method of mathematical weighing.

The published and archival materials on the issues related to spreading and appearance of landslides phenomenon in the RA territory have been studied and analyzed in the work. It has been suggested the classification and zoning of the landslides specific to the RA territory should be implemented, referring to the absence of such activities, and taking into account the international experience related to the given phenomenon.

In the article natural, historical-cultural and human-made tourist attractions of Tehran province have been analyzed for tourist usage and distribution. The role of tourist resources for forming and developing of basic tourist territories and destinations is given.

Interconnection of cities system transport problems, surrounding natural environment and territorial organization has been discussed by the example of Iranian Сity Gorgan. The role of transport flow of passengers is revealed and evaluated in the process of regional sustainable development.

For successful development of tourism industry in RA it is necessary to study and evaluate the tourist-recreational potential of the whole territory of the Republic as well as its regions. The bases for recreational use of the territory are first of all natural factors as they are not only tourist-recreational resources, but also they are prerequisites for recreational development.