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We present new lithological and biostratigraphic data on stratotype and paleontologically representative marine sedimentary sections of the Malinovka Group (Borlug, Tarlyk and Tamzyrin formations) in the Uyuk area of the region, Shemush-Dag Group (Ayangaty and Adyr-Tash formations) and Chergaky Group (Alavelyk Formation) in the Khemchik area of the region, Chergaky Group (Alavelyk Formation) in the Alash area of the region, Kargy Formation in the Kargy area of the region. The materials on the Sistig-Khem Group (Uza, Ust-Khamsary and Kugar formations) in the Sistig-Khem area of Tyva are considered. We specified the chronostratigraphic position of the Tarlag-Aksy Horizon and justified the identification of a new Borlug Horizon. We found out that the Tyva Ordovician marine sediments are currently located in individual tectonically isolated blocks and are not fragments of a single paleobasin. Based on the analysis of the taxonomic composition of fauna assemblages and trace fossils, we suggest that the Alash-Khemchik, Uyuk and Kargy blocks with outcrops of Ordovician marine sediments of Tyva are paleozoogeographically close to the marine paleobasins of the Gondwana group of continents. At the same time, we note a low migration potential of their fauna assemblages relatively to the possibilities of communication with coeval communities of the Altai Basin and of that of the Siberian Platform and Taimyr. The Sistig-Khem block of Tyva, having effusive-sedimentary sequences of marine genesis, was not only significantly distant from the listed Siberian paleobasins, but was also separated from the group of Alash-Khemchik, Uyuk and Kargy blocks with Ordovician marine sediments.

The article presents new data on the formation conditions of basalt and basaltic andesite of the Kharchinsky Volcano (Central Kamchatka Depression, CKD). It is shown that the liquidus association is represented by olivine (Fo₉₁) and Cr-spinel, which crystallized in oxidized conditions NNO+0.4 - NNO+1.5 at temperatures of 1,110-1,210 °C. The study of melt inclusion in olivine phenocrysts allows us to reconstruct compositions of parental melts for basalt and basaltic andesite. These melts have Mg-high (Mg# ≈ 76), Al-low and Ca-low basic compositions enriched in volatiles. Water content in melts could have reached up to 5.5 wt.%. These melts formed from a peridotite source, sometimes with slight admixture of pyroxenite component. Crystallization of melts could have occurred in several intermediate chambers (up to 1.5, at 5-7 and 11-13 kbar).

Norilsk type intrusions are characterized by unique reserves of disseminated Cu-Ni mineralization localized in picritic and taxitic gabbro-dolerites. Picritic and taxitic gabbro-dolerites are rocks of different genesis, but the mechanism of formation of picritic gabbro-dolerites is still debatable. Most often, they are regarded as a cumulative part of a layered series. In this work we show a well-pronounced geochemical contact between a layered series and picritic gabbro-dolerites. In the section of the latter, we have established reverse geochemical zoning expressed as regular accumulation of major elements, which do not form a single trend of crystallization differentiation with the rocks of the main layered series. The rocks are discrete within the horizon of picritic gabbro-dolerites; we have identified two intervals: the lower one with low Cr contents and stable Eu and Sr anomalies and the upper one with anomalous high chromium contents, reduced LILE contents, and no positive Eu anomaly specific to the lower section of picritic gabbro-dolerites. Based on the known models of formation of reverse zoning in the marginal zones of layered massifs, we present a new genetic scheme for the formation of picritic gabbro-dolerites as products of pulsed intrusion. This scheme implies that the lower part of picritic gabbro-dolerites formed from hybrid magma, and the upper one, from primitive magma as a result of the pulsed filling of the magma chamber. In our opinion, this is the cause of the reverse zoning and the accumulation of chromium in the upper section of picritic gabbro-dolerites.

The Tomtor Complex of ultramafic rocks and carbonatites is located in the north of the Sakha Republic (Yakutia). Unique Sc-Y-Nb-REE ores of the Burannyi site (Tomtor deposit) are cryptogranular and have high contents of Nb₂O₅, REE₂O₃, Y₂O₃, and Sc₂O₃. Thin-layered ore bodies are stratified formations that presumably occur in weathering crust depressions. Based on modeling the shape of the roof and ore body base, as well as the overlying Permian continental and Jurassic marine sediments of the Burannyi site, the structural and morphological features of the ore layer were identified, using the QGis (QGIS.ORG Association, Switzerland) and Micromine (Micromine Pty Ltd., Australia) software packages. High-grade ores of the Burannyi site lie on an irregular surface. In the base of the ore layer there are two isolated depressions, the Northern and the Southern, which in turn are complicated by basins of various sizes. There are ten basins in the Northern Depression and four in the Southern Depression. The basins form linear structures that coincide with faults identified during exploration. Only four basins in the northern part of the site are completely filled with ore matter. Others are partially filled with ore, and the remaining volume is occupied by Permian coarse-grained clastic coal-bearing sediments. In the Southern Depression, the proportion of basins filled with ore material is the lowest; the deepest basin is filled with ore by only 25%. It is assumed that this difference is caused by different times of basin formation. Developing the hypothesis that the ores are sediments of a thermal reservoir, we suggest that the formation of basins at the ore layer base occurred as a result of hydrothermal (phreatic) explosions. The presence of tectonic breccia confirms the occurrence of fast high-pressure processes in the Tomtor Complex.

The focus on the practical application of geographical knowledge is one of the main qualities of modern social geography and cartography. This article provides an overview of the cartographic experience of depicting the living conditions of people in Siberia as one of the main criteria for the quality of life, with the aim of applying it in the Atlas of the Asian part of Russia. The category «housing conditions» included mainly basic indicators of housing amenities, according to statistical observation (heating, hot and cold water supply, sewage disposal, electricity supply, and gas supply), as well as specific indicators of housing security, the introduction of new housing (in dynamics). For almost twenty years, a cartographic toolkit for the characteristics of housing conditions has been developed on the example of Siberian territories of various hierarchical status (macro-regional, regional, municipal): Russian and Mongolian territory of the Lake Baikal basin, the Baikal region, municipal districts of the Irkutsk region, the city of Irkutsk, etc. Scenario developments for the Asian part of the country include the regions of Western Siberia (the Altai Republic, Altai Krai, Kemerovo, Novosibirsk, Omsk, Tomsk, and Tyumen Oblasts, Khanty-Mansiysk and Yamalo-Nenets Autonomous Districts (Yugra)) and Eastern Siberia (the Republics of Buryatia, Sakha (Yakutia), Tyva, Khakassia, Zabaykalsky and Krasnoyarsk Krais, and Irkutsk Oblast). The data used are from the Federal State Statistics Service of Russia and its regional offices (2023-2024) for these regions. Currently, the geography of housing well-being in Siberia is determined by three regions: the Yamalo-Nenets and Khanty-Mansi (Yugra) Autonomous Districts, and the Novosibirsk Region, where the indicators of housing improvement are higher (in the first two regions) or at the level of the national average.

Based on a combination of statistical and cartographic methods, the spatial and temporal features of socio-demographic processes and structures are studied, and the socio-demographic situation in the macroregion of Asian Russia is interpreted. Mapping of individual indicators (analytical maps) and types of socio-demographic situation (synthetic maps) in the macro-region is carried out. The main research method is multi-scale geoinformation mapping at hierarchically interconnected territorial levels: the macro-region of Asian Russia, interregional systems (a group of neighboring regions-subjects of the Russian Federation, large river basins), sub-regions (urban agglomerations). The information basis for mapping is Rosstat data, which are based on population censuses (2010 and 2020) and current population censuses. The proposed methods and results of the study are focused on multi-scale complex population mapping.

Taking into account the stated eastern priorities in social and economic development of the Russian Federation, spatial relationships between hydroclimatic characteristics and health indicators of the population of Asian Russia were investigated by creating multi-scale maps included in an integrated atlas and their analysis. The underlying characteristic is climate discomfort as a factor determining the zonation of the impact of climate on population health. As the most dangerous consequences of air pollution, oncological diseases have been identified, maps for cities of the Baikal region have been constructed. The role for health preservation and self-purification of water through indicators of ecological water potential was studied, using the example of the Angaro-Baikal basin. Research on climate change has been identified.

Benzapyrene (BP), which has carcinogenic, mutagenic, and teratogenic properties, determines the level of urban air pollution. The purpose of the study: based on cluster analysis, to identify risk areas for the development of congenital anomalies of the nervous system associated with atmospheric air pollution in children of the аsian part of Russia. Materials and methods. The research was conducted based on data from 2017-2023 in 22 subjects of the Russian Federation. The following were studied: atmospheric pollution index (IPA), BP content; the number of exposed population (EN). The frequency of congenital anomalies of the nervous system in children aged 0-14 years is calculated per 100,000 population (‰ _оо ) . It was found that the maximum BP levels were >100 MPC, the proportion of EN was 76,95 %, and the average incidence of congenital anomalies of the nervous system in children was 14,1 cases per ‰ _оо. Correlation coefficients have been calculated, confirming the connection of the congenital anomalies of the nervous system and BP, IPA. Six clusters have been identified, among which the most disadvantaged with high levels of pollution and high pollution (43,9 ‰ _оо) includes only the Irkutsk region. Risk zones are formed due to the peculiarities of weather conditions that contribute to the accumulation of pollutants, which requires the implementation of measures to reduce atmospheric air pollution.

The current geo-ecological situation in the territory of Asian Russia and its depiction on maps is considered as a result of the historical process of the territory and its natural resources development. The developed and compiled series of geo-ecological maps reflects the current living conditions of the population, the state of the territory’s ecological and resource potential, the nature and extent of anthropogenic impact, and the quality of the environment.

The current geo-ecological situation in the territory of Asian Russia and its depiction on maps is considered as a result of the historical process of the territory and its natural resources development. The developed and compiled series of geo-ecological maps reflects the current living conditions of the population, the state of the territory’s ecological and resource potential, the nature and extent of anthropogenic impact, and the quality of the environment.