Vol. 39 No. 1 (206) (2005)

Spreading, conditions and causes of formation of landslides in Armenia, their varieties, intensity of displacement, peculiarities of landslide formations from the point of view of lithology etc. are examined. Maximum of their prevalence is marked in high-altitude interval of 2000-1500 m and lower. Their seismogenic varieties, adjacent to the active fault zones, are particularly distinguished among the landslides of Armenia. Great attention is paid to the role of anthropogenic factor in landslide formation in the Republic.

Contact-metasomatic granitization is a complicated process and is expressed by formation of contact homfels (izochemical metamorphism), afterwards iron-magnezial (bazification) and silica-alkaline (proper granitization) metasomatism. In the article the chemical composition of contact homfels, bazificated and granitizied rocks and also intrusive aplitic granites is stated. On the diagrams it's properly defined the behavior of elements of granitizied series of rocks - alkaline elements, aluminum and elements of dark minerals (calcium, magnesium, iron) during the process of granitization. Granitization is accompanied by a huge entrance (K, Si) and exit (Ca, Mg, Fe) of substance, which approves the metasomatic character of the process.

The questions of optimization of column prospecting drilling on vein type deposit are considered. By researches it's established the rational parameters of drilling different categories, specific axial loading, mechanical speeds, the quantity of irrigative liquid, the increase of wear resistance of diamond crown.

Analysing the process of forming the Armenian ethnos and State system it is proved that the geological factors influence them, which cause the integrity and stability of the ethnos. We come to the conclusion that besides cosmic factors the active breakings of different order and their junctions, which are on the frontier belts of lithosphere plates also influence the forming of ethnogenesis zones and passionate atmosphere.