The article discusses the localization conditions of the Shakardara gold-sulfide-quartz deposit. It is noted that ore bodies of two morphological types are distinguished at the deposit: vein zones of hydrothermally altered andesitic porphyrites and their tuffs (secondary quartzites) and a band of gold-bearing metasomatites. The vein zones are represented by intensely silicified and kaolinized rocks with separate quartz veins and veinlets bearing pyrite-chalcopyrite mineralization. Gold mineralization is most common in quartz-rich metasomatites.

The article notes the impact of the scientific and technical revolution that began in the 20th century on the environment, and analyzes the concept of environmental protection and efficient use of natural resources. Also, environmental quality standards were analyzed, cause-and-effect relationships between environmental components, as well as the possibility of their change and subsequent impact on socio-economic conditions were determined, methods of environmental condition assessment were shown.

The final level of agricultural plants productivity is determined by optimum of plants' moisture ensuring. In the conditions of irrigated agriculture the intensity of water supply, the uniformity of water distribution over surface and within some period directly forms the final impact. In this article suggest using such concepts as "readiness of system for work" and "system reliability" for irrigation systems design. It is obviously shown, that by implementation of suggested formulas it is possible to calculate the influence coefficients of mentioned factors for additional yields data and respectively the final production. To use the notion of technique downtime during the operation of irrigation equipment is recommended.

Before the occupation, Aghdam district, with an area of 1250 km², was one of the most developed regions of the republic. Although the district's terrain is predominantly flat, part of it is mountainous. Approximately 77.4% of its area, that is 846.7 km², was occupied by Armenia. After the liberation of the area, it became necessary to clarify the freshwater potential of the region and to take measures for its efficient utilization, particularly in the context of restoring agricultural and livestock activities, as well as ongoing global climate changes. This article utilizes data from exploration drillings conducted over the past two years. Based on a comprehensive study of this data, along with the summarization of archival and technical literary materials, the hydrogeological conditions of groundwater and confined waters have been clarified, and the hydrological conditions of the studied area have been analyzed.

Remote sensing methods are widely used (1990s) to study erosion processes. Remote sensing makes an important contribution to the assessment of erosion at various spatial levels. The use of remote sensing techniques has the potential to identify eroded areas and monitor erosion processes at the regional level. lines, zones of influence of geomorphological processes and quantitative indicators. The coastline and its dynamics of the coastal areas of the Absheron peninsula (according to geomorphological zoning: from Sumgayitchay to the Jeyrankechmez river) were studied using ArcGIS software using Landsat MSS, TM, OLI images of the coastal zone of the Caspian Sea for 1986, 2002 and 2019. The calculation was carried out using the WLR statistics of the DSAS method. The calculation was carried out using the WLR statistics of the DSAS method. Negative values obtained during the calculation indicate erosion, while positive values indicate accretion. Remote sensing-based methods provide a cost-effective way to investigate erosion or build-up where there are no available areas or direct field methods are expensive. An analysis of the compatibility of remote sensing data for identifying areas of erosion and accretion processes (accumulation), monitoring, assessing the impact on soil and other objects, shows the use of a number of images to solve these problems.

The article gives a brief description of current knowledge on geochemical and biogeochemical processes that influence directly or indirectly the distribution of chemical elements in soils and plants under natural and man-made conditions. The sampling of soils and plants as research objects is not accidental. Soil and plants are the most important, most complex and dynamic components of the biosphere. Revealing their geochemical and biogeochemical role is interesting and important. Man-made input of trace elements into the environment has a negative effect on soil and plants, which requires serious study. On the other hand, it is possible that all kinds of chemical elements can enter the food chain in the conditions of pollution, which is dangerous for the human body. The role of trace elements, including heavy metals, is undeniable in terms of their physiological importance in living organisms. When the concentration of heavy metals, which are important for life, exceeds the norm, it becomes dangerous for human life. That is, the main issue depends on the concentration of chemical elements in the environment: for living organisms, it is considered as a trace element in the case of a lack of an element, and it is considered as a heavy metal in the case of its excess. It has already been proven that their intensive distribution in the biosphere and atmosphere and the observation of high concentrations in the soil pose a great threat to biota. When the amount of toxic heavy metals or biophilic trace elements exceeds the maximum allowable concentration (MAC) in living organisms, biological processes are disturbed. Especially lead, mercury, cadmium are considered more dangerous pollutants among heavy metals. The source of heavy metals in soils are rocks of various origins. Features of their distribution in soils are different depending on the origin and granulometric composition of the rocks.

This article studies 3 landscape sectors out of which 2 are main – (Samur-Valvalachay – humid and Atachay-Sumgaitchay – arid) and one is transition (Valvalachay-Atachay – semi-humid) landscape sectors that are formed in submeridional direction with the influence of the climatic, orogenic and hypsometric conditions on the north-eastern slope of the Greater Caucasus. Furthermore the article describes the settlements and the number of their inhabitants, their main occupations, distribution of main sectors of houshehold economies within the divided mountain geosystems sectors of north-eastern slope of Greater Caucasus.The settlements and population distribution dramatically changes with the influence of landscape-ecoligocal conditions whiah are formed insdie the diveded sectors. The number of settlements and population share for divided areas are respectively as follows: Samur-Valvalachay – settlements - 397 (75%) and population - 399.544 (79,4%); Valvalachay-Atachay – settlements - 103 (19,5%) and population 89.187 (17,7%);Atachay-Sumgaitchay – settlements - 29 (5.5%) and population 14.731 (2.9%).

The article deals with the geochemical characteristics of copper-polymetallic mineralization of the Elbeydash field. Three ore intervals represented by six ore lenses were identified by studying the structural and morphological peculiarities of copper-polymetallic ore masses in the field. According to the results of correlation analysis, it is shown that the close relationships (Pb–Zn–Cu–Аu–Ag) between the elements are associated with sulfide minerals (galenaite, sphalerite, pyrite, chalcopyrite). A statistical analysis of the determination of the major and adjacent elements at different levels of copper-polymetallic mineralization was carried out and it was found that Cu and Pb are the major ore components of copper-polymetallic mineralization. 3 levels of mineralization were determined on the field: 1) Cu-Pb-Zn mineralization on the lower level; 2) Pb-Cu-Zn mineralization on the middle level; 3) Cu-Pb-Zn mineralization on the upper level.

The article provides information on the usability of groundwater with different degrees of mineralization for irrigation in water supply. Research shows that groundwater with a mineralization rate of up to 1.5 g/l can be used freely without any additional measures in water supply. Most of the quality indicators of waters with a mineralization rate of 1.5 g/l to 3.0 g/l are within the norm, but some quality indicators are outside the acceptable limits. Therefore, it is necessary to take additional measures to improve their quality when using such water. However, in crisis situations, groundwater with a mineralization rate of up to 3 g/l can be fully used for water supply. The quality of water used for irrigation must meet 2 main requirements: 1. Irrigation water should not harm the biological development of plants, productivity, and product quality; 2. During irrigation, the process of repeated salinization and solnetzicity should not occur in the soil and should not damage the fertility and productivity of the soil. The quality and suitability of irrigation water are classified according to their degree of mineralization: If the degree of mineralization of water is 0,5 g/l, water is fully suitable for irrigation, 0.5-2.0 g/l - suitable, 2-5 g/l - less suitable, >5 g/l - irrigation is dangerous. It is recommended that the temperature of the irrigation water be 14-200. Water is considered completely suitable for irrigation when pH = 6-8.5, conditionally suitable when pH > 8.5, and unsuitable when it is pH<6 and pH>9.

The Agduzdag epithermal gold-silver (Au-Ag) mineralization is spatially and genetically related to the Miocene-Pliocene (N1-N2) lavas and tuffs of rhyolites, dacites and andesites, and their subvolcanic analogues. In the zone of faults, these rocks are subject to hydrothermal alterations with formation of successively facies of low-temperature propylites and quartzites. Analyzing the behavior of these elements in the crystallization differentiation process and in subsequent secondary alterations changes, it is possible to determine the cause of the deposition of these elements by hydrothermal activity. Au, Ag and Hg, and possibly Cu, Zn, Pb do not accumulate in rock-forming minerals (K distribution - Kd <1), remain in excess and accumulate in the residual. As a result of subsequent metasomatic and post-magmatic hydrothermal processes, these elements are catched by hydrothermal processes and can form their own ore deposits and occurrences. Therefore, we can argue that the existing deposits and manifestations of Au, Ag, and Hg, and possibly Cu-Zn-Pb, Mo, Li, As, Sb, U-Th, associated with medium and acid rocks were formed due to the accumulation of these elements in the residual melt at low values of the combined distribution coefficients of these elements between crystals and melts. Thus, formation of Low-temperature gold-silver (Au-Ag), mercury (Hg), possibly mercury-arsenic-antimony (Hg-As-Sb), copper-lead-zinc (Cu-Pb-Zn) deposits and occurencies of the Lesser Caucasus are closely related to the Neogene (N) Hi-K volcanic and subvolcanic calc-alkaline andesites and different acid rocks and also intense block movements along the deep faults during the period of formation and development of graben-like structures. These structures were made by Cenozoic (KZ) volcanogenic and volcano-sedimentary rocks.