scholarly journals Landscape monitoring studies of the North Caucasian geochemical province

2020 ◽  
Vol 243 ◽  
pp. 371
Author(s):  
Vladimir Alekseenko ◽  
Natalya Shvydkaya ◽  
Alexander Puzanov ◽  
Aleksey Nastavkin

The data on the geochemical features of the bedrocks and soils of the province are given. Considerable attention is paid to regional abundances, as well as enrichment and dispersion factors of the chemical elements in landscapes. Using the example of the North Caucasus, it is shown that for such indicators as phytomass, geological, geomorphological, and geobotanical features, it is possible to make a preliminary outlining of regional structures corresponding to geochemical provinces. At the same time, a subsequent geochemical study of these structures remains mandatory. Upon determining certain geochemical associations, geochemical provinces can be basically distinguished; to a large extent, geochemical properties of these accumulated and scattered associations of elements contribute to the regional soil geochemistry. The results of long-term monitoring studies of the North Caucasus geochemical province have shown that the key features of the regional landscapes are due to the composition of bedrock and the presence of a large number of ore deposits and occurrences. The data obtained are the basis for assessing the state of the environment in conditions of increasing anthropogenic impact, and the established regional abundances can be used to assess the degree of pollution in agricultural, residential, and mining landscapes.

Author(s):  
I.Y. Matasova ◽  

The article considers the results of studying the features of Sr distribution in rocks of various ages and composition and soils of landscapes of the Black Sea coast of Russia (in the humus horizon and soil profile). The content of elements in the studied soils is compared with the regional background for the soils of the North Caucasus. A direct relationship between the content of the element in soils and underlying rocks, as well as the influence of technogenesis on the processes of accumulation and removal of the element in the soils of agricultural landscapes, has been revealed. The results of a comprehensive study of the south of Russia became the basis for studying the peculiarities of the distribution of Sr landscapes of the Black Sea coast of Russia. To establish the main parameters of the distribution of chemical elements in rocks and soils of various landscapes and the region as a whole, to identify geochemical features of geographical and technogenic differentiation, to assess the impact of various types of environmental management on changes in the geochemical spectrum of soils, to determine the influence of landscape-forming factors on the migration of chemical elements and the formation of geochemical barriers. The highest concentration of Sr was observed in carbonate-terrigenous rocks of the Paleogene and Cretaceous ages (marls and limestones). In the humus horizon of soils, the average metal concentrations vary in the range from 13.0∙10–3 to 95.0∙10–3 % with a regional clark of 22.0∙10–3 %.


2021 ◽  
Vol 247 ◽  
pp. 1-13
Author(s):  
Vladimir Alekseenko ◽  
Natalya Shvydkaya ◽  
Jaum Bech ◽  
Alexander Puzanov ◽  
Aleksey Nastavkin

Long-term studies of the North Caucasian geochemical province allowed to establish regional abundances and calculate accumulation (dispersion) factors for chemical elements in rocks, soils, and plants. Certain natural regional patterns characterize the province. Associations of elements in high and low concentrations are often determined by the predominant composition of rocks: carbonate-terrigenous, terrigenous, and igneous. The study of the average contents of several chemical elements in the soils of the province showed that the association of accumulated elements includes metals with different migration characteristics. Thus, despite the rather close values of the ionic radii, Pb, Zn, Cu, and Li (judging by the ionic potential) are characterized by the formation of cations, while Mn, Mo, and Zr form complex ions. Such elements as Zn, Cu, and Pb are mainly accumulated on hydrosulfuric barriers, while Mo, Co, and Mn are stopped by oxygenous barriers. For Cu, Zn, Mo, and Co, biogenic accumulation plays a significant role, while for Pb and Ni it is practically absent. The absolute dispersion of the elements did not reach environmentally hazardous values, although it indicates a fairly intensive migration. In woody plants, Ba, Nb, Sc, Sr, and Zn are accumulated most intensively. 


Author(s):  
A. A. Balikoev ◽  
R. R. Kozyrev ◽  
A. Ch. Salbieva ◽  
V. A. Odintsov

The article is devoted to the problem of developing the mountainous areas of the North Caucasus, which is the development of the campaign launched in the last century to develop previously uninhabited areas of the earth’s surface. Architectural and construction tasks in the construction of mountain objects in a complex mountainous terrain are complicated by seismic phenomena due to the proximity of Elbrus and Kazbek. The construction of mountain objects is hampered by natural and technogenic phenomena, equivalent to catastrophes. In the history of the development of the mountainous areas of the North Caucasus, the role of mining facilities is important, which, by mining, increases stresses and strains to a critical state with the destruction of rock massifs. The movement of mountain masses and the change in the basis of erosion determine the vectors of exomorphodynamic processes in the region. The probability of disasters in complex terrain conditions is determined by the number and quality of damaging factors and explains the need to optimize the forms and means of architectural support for the development of mountain areas. The problems of urban planning are solved through comprehensive research, one of which is the architectural support of projects, the purpose of which is to combine the principles of designing the architecture of objects and the state of the environment. Architectural support of construction in mountain regions provides, inter alia, an organic combination of the development of small settlements in the region with the prospect of agricultural and industrial production with their social challenges and demands. The effectiveness of the development of mountain areas with the implementation of the recommendations of architectural support is evaluated by the criterion in the form of an increase in the total income of the developed territory, which is a product of taking into account technological, economic and environmental factors of production in developed mountain regions. A promising direction of increasing the economic efficiency of the replacement of scarce binders with alternative substances, for example, fly ash with an increase in their activity in the apparatus and other innovations in the construction and technological areas.


2018 ◽  
Vol 10 (4) ◽  
pp. 481-492
Author(s):  
Tatyana DEGTYAREVA ◽  
◽  
Andrey LIKHOVID ◽  
Alexey LYSENKO ◽  
Yuri KARAEV ◽  
...  

Author(s):  
Vladimir I. Golik ◽  
◽  
Yury I. Razorenov ◽  
Yury V. Dmitrak ◽  
Oleg Z. Gabaraev ◽  
...  

Author(s):  
И.А. Богуш ◽  
Г.В. Рябов ◽  
А.А. Бурцев

Актуальность работы заключается в изучении и обосновании перспектив выявления новых рудных тел в слабо изученных частях рудного поля. Рассмотрены геологические особенности крупного Худесского медноколчеданного месторождения Северного Кавказа. Рудные залежи месторождения разведаны и локализованы только в восточной части рудного поля. Центральная часть и западный фланг поля практически не разведаны, хотя здесь сохраняется полный рудоносный разрез и выделена мощная Северная зона пиритизированных метасоматитов. Месторождение планируется Уральской горнорудной компанией в ближайшие годы ввести в промышленную разработку (ведется разработка технического проекта). Целью проведенных исследований являлось составление схемы разреза продуктивной части девонской вулканической постройки со стратиграфическими уровнями рудных залежей гидротермально-осадочных руд и установление прямых признаков скрытого оруденения. Методы работы. В процессе проведения полевых работ выполнено подробное описание этих крупнообломочных плотных пород, состоящих из обломков глыб вулканитов и кластогенно-гидротермального мелкообломочного цемента с редкими (1%) обломками массивных колчеданных руд и пиритизированных метасоматитов. Результатом работ явилось обоснование в качестве главного поискового признака наличия обломков массивных руд в секущих телах эксплозивных брекчий, указывающих на скрытое промышленное оруденение. Доказывается поствулканический характер этих рудоносных эксплозивных брекчий. Рекомендуется направление поисковых работ. Поисковые буровые скважины при прослеживании и выявлении стратиграфических рудных уровней нужно располагать по субмеридиональным профилям. В существующей штольне №19 следует пройти в северном направлении разведочные квершлаги с учётом секущего вертикального положения поствулканических тел эксплозивных брекчий. Учитывая связь нижнепермского вулканизма с золотоносным Северным разломом Тырныауз-Пшекишской тектонической зоны, близость и геологическое единство Чучкурского и Худесского месторождений, следует провести опробование эксплозивных брекчий на комплекс полиметаллов, включая золото. The relevance of the work is to study and substantiate the prospects for identifying new ore bodies in poorly studied parts of the ore field. The geological features of the large Khudessky copper-crusted deposit of the North Caucasus are considered. The ore deposits of the deposit have been explored and localized only in the eastern part of the ore field. The central part and the western flank of the field are practically not explored, although a complete ore-bearing section is preserved here and a powerful Northern zone of pyritizedmetasomatites is identified. The deposit is planned to be put into commercial development by the Ural Mining Company in the coming years (a technical project is being developed). The aim of the researchwas to draw up a section diagram of the productive part of the Devonian volcanic structure with stratigraphic levels of ore deposits of hydrothermal-sedimentary ores and to establish direct signs of hidden mineralization. Methods. In the course of field work, a detailed description of these large-block dense rocks consisting of fragments of blocks of volcanites and clastogenic-hydrothermal small-block cement with rare (1%) fragments of massive pyrite ores and pyritizedmetasomatites was performed. The results of the work were the substantiation as the main search sign of the presence of fragments of massive ores in the secant bodies of explosive breccias, indicating hidden industrial mineralization. The post-volcanic character of these ore-bearing explosive brecciasis proved. The direction of search operations isrecommended. Prospecting drilling wells should be located along submeridional profiles when tracing and identifying stratigraphic ore levels. In the existing tunnel No. 19, it is necessary to pass exploration quershlags in the northern direction, taking into account the secant vertical position of the post-volcanic bodies of explosive breccias. Taking into account the connection of the Lower Permian volcanism with the gold-bearing Northern fault of the Tyrnyauz-Przekish tectonic zone, the proximity and geological unity of the Chuchkur and Khudessky deposits, it is necessary to test explosive breccias for a complex of polymetals, including gold.


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