At present, it is possible to identify a number of new directions for the development of biogeochemical research, at the junction of fundamental and applied studies. A novel field of research is being formed, namely, engineering biogeochemistry, within the framework of which innovative biogeochemical technologies and technological processes based on modeling and management of ecosystematic biogeochemical cycles are being developed. The application of these innovative technologies for the restoration of disturbed and polluted impact ecosystems, in particular, polar ecosystems in the zones of operation of gas-producing enterprises, is considered. Technological examples of calculations of geoecological risks, as well as microbial contamination risks are given. A pool of the developed biogeochemical technologies and their connection with other innovative technologies within the framework of gas-producing companies is shown.

In this paper, we discuss questions of the common origin of the disciplines of soil science and landscape geochemistry. Their closeness lies in their common objects of study — soils and landscapes — and a common methodological approach based on systemic analysis, the evolutionary-historical principle, and the priority of the scientific approach in solving practical problems, as laid down by V.V. Dokuchaev. The prominent naturalists A.E. Fersman and V.I. Vernadsky emphasized the genetic connection and mutual enrichment of these sciences through theoretical concepts and experimental data. When considering common problems of these two disciplines, particular importance is given to the biological cycle as a fundamental law governing the functioning of ecosystems. In the classification of soils and soil-geochemical catenae, their position within the system of geographic landscapes is especially significant. Currently, priority issues include anthropogenic impacts and environmental monitoring, which involve studies of element migration over the biosphere, as well as efforts towards mathematical modeling.

This study establishes the authorship of the geological term “eluvium” and traces its evolution in geological and soil sciences. It confirms the priority of H. Trautschold (1817–1902) as the original author of this term, supported by analysis of his works from the 1870s. The term was first introduced by him in 1872. The article demonstrates that the modern interpretation of the term “eluvium” shows a high degree of correlation with H. Trautschold’s classical definition. The development of the concept of eluvium and ideas about eluvial processes is traced through the works of prominent Russian soil scientists – N.M. Sibirtsev, V.V. Dokuchaev, V.I. Vernadsky, B.B. Polynov, V.R. Williams, and N.P. Remezov. V.V. Dokuchaev systematized the concept of eluvium into a coherent framework: definition of eluvium → eluvial processes → stages and phases of eluvial rock transformations. He emphasized that “although these products are sometimes altered beyond recognition of the parent rock which they originated from, a genetic connection between them always persists.” Particular significance lies in the incorporation of the biogeochemical aspect into the concept of eluvium through the works of N.P. Remezov, who established biological accumulation of elements exceeding their removal during eluvial processes. This allowed eluvium formation to be viewed not as a purely abiotic process but as a phenomenon involving living organisms. The article reveals the historical continuity of scientific ideas in the hypothesis of the origin of the Russian Plain: H. Trautschold → V.V. Dokuchaev → B.B. Polynov → V.A. Kovda. H. Trautschold was the first to propose that the Russian Plain formed from deposits lying on top, which were influenced for millennia by atmospheric precipitation, initiating the concept of eluvial origin of plains. This idea was later reflected in the works of V.V. Dokuchaev and B.B. Polynov, and subsequently in V.A. Kovda’s hypothesis regarding the fluvioglacial origin of the Russian Plain. Our analysis confirms that the term “eluvium” is a fundamental concept uniting geology, geomorphology, geochemistry, and soil science, and its evolution reflects the advancement of understanding regarding the genesis of surface deposits and soils.

Brief information is given about several Russian microbiologists--naturalists whose names are found on the pages of V.I. Vernadsky’s diaries. Despite the variety of topics, their works always found hot reaction of V.I. Vernadsky. The knowledge of these materials helps one to understand the evolution of the scientists’ ideas, trends of the development of science.

The paper is devoted to the influence of outstanding Russian scientists Dmitri Ivanovich Mendeleyev and Vasily Vasilyevich Dokuchaev on the formation of the views of their brilliant student Vladimir Ivanovich Vernadsky, his formation as a great Russian thinker and naturalist on a planetary scale, as well as their further creative interaction.

This article is about the world’s only cabinet-museum of the great world scientist Vladimir Ivanovich Vernadsky. The museum celebrates its sixtieth anniversary in 2023, the year of the 160th anniversary of the scientist. The museum contains items which accompanied V.I. Vernadsky and his wife Natalia Egorovna (nee Staritskaya) from the moment of their wedding to his last days. There are many photos and portraits of relatives and friends of the Vernadsky family on the walls. Vernadsky’s library had about 7,000 books, some of which are now in the museum. The museum has many books by V.I. Vernadsky himself, published during his lifetime and in recent years. The sphere of interests of the great scientist was huge. The exposition and the library of the museum tell in detail about the creative path of the scientist. Having started as a mineralogist, V.I. Vernadsky created physical (energetical) crystallography, genetic mineralogy. He is the creator of radiogeology. His studies of living matter, comparison of its properties and composition with those of mineral matter allowed the scientist to create a new science –biogeochemistry. In his scientific activity, V.I. Vernadsky paid much attention to the development of his doctrine of the biosphere, the transition of the biosphere into the noösphere. Vernadsky was a significant public and political figure of pre-revolutionary Russia. One can learn about all this from the museum’s exposition and from the story of the curator of the museum.

Brief information is given about the samples of vernadite from the mineralogical collection of the Earth Science Museum, which were passed for display at the exhibition organized for the anniversary of V.I. Vernadsky. The history of the discovery and studying of vernadite and features of its chemism, modern concepts of its crystal structure, genesis as well as some practical applications are addressed. Attribution of the exhibition samples as vernadites is questionable due to the lack of information about their instrumental diagnostics.

The paper is devoted to the outstanding Russian scientist Vladimir I. Vernadsky, who is one of the founders of ecology. As a student of V.V. Dokuchaev, he developed his teacher’s ideas of a systematic dynamic approach to the study of nature and introduced a deep scientific ecological content into the concepts of the biosphere and the noösphere. V.I. Vernadsky is the founder of a complex of modern Earth sciences (geochemistry, biogeochemistry, radiology, and hydrogeology) and the creator of many scientific schools. In his scientific work, he covered many research areas, from geology to the study of the role of living matter in geochemical cycles, from soil science to the biosphere, the increasing influence of scientific thought, human activity in the biosphere and its transformation into the noösphere. The importance of agriculture in the biosphere and the noösphere is considered. The biosphere is an area of active life on Earth (troposphere, hydrosphere and part of the lithosphere), the composition, structure and energy of which are mainly due to the activity of living organisms. The noösphere is its thinking shell. Agriculture, whose most important part are grassland ecosystems, is an important component of the biosphere, being a reproducible, autotrophic sustainable resource (energetical, environmental, food and feed). In light of the pressing environmental problems facing the world, environmental education and environmental thinking are a priority for the development of the biosphere, the noösphere and agriculture.

Here is a brief overview of the author’s lecture series — an additional general education program “Mineralogical Journey into the Depths of the Earth and Back” dedicated to minerals characterizing the main layers of the Earth, namely: the crust, the upper and lower mantle, and the core. The Program provides a general understanding of the Earth’s structure and minerals, their main properties, and natural formation processes. It covers key minerals of the Earth’s crust such as quartz, gemstones like ruby, sapphire, emerald, etc., as well as mantle minerals, including diamond. Information on the application of these minerals in technology and the jewelry industry is also presented. During the preparation and conduction of the online course, the author implemented an individualized approach, which helps enhancing the learners’ understanding and increase their satisfaction. This course was developed by the author and piloted at the Earth Science Museum of Moscow State University named after Lomonosov. To facilitate the absorption of a large amount of information, the series is divided into four sessions and clearly structured within each one. The online format enables the lecturer to interact fully with the audience at any time convenient for the participants.

Distribution features of cadmium, lead, partly Ag, Bi, In, Hg and Tl in suspended solids are considered. Studies were made on the Oka River in the area of the Prioksko-Terrasny Natural Biosphere Reserve on a river section remote from the zone of formation of the technogenic scattering stream, in the period 1983–2018. To assess the general trend of changes in the concentration of the elements over the period of the experiment, it was proposed to consider the results on their prevalence in the composition of suspended matter obtained in the intermediate hydrological phase of the river between the spring flood and the summer midden. This is the main feature and essence of our proposed approach in order to eliminate the influence of significant seasonal changes in the macro- and micro-component composition of suspensions. It is shown that the 35-year time interval can be divided into two periods, namely: the first one is characterized by a decrease in the concentration of heavy metals (Cd, Pb), while the second one is characterized by the absence of any trend, relatively weak fluctuations in values. The direction of changes in the concentration of elements in the first period correlates with the literature data on the dynamics of a decrease in the intake of anthropogenic wastewater into surface waters in recent decades and with the results of our assessment of the decrease in river water pollution upstream from the experimental area.

This study investigates the metal-bearing potential of Upper Jurassic (Tithonian stage) combustible shales from the Kashpir deposit (Volga Basin) using linear geochemical spectra methodology. Samples from mine workings and natural outcrops were analyzed by energy-dispersive X-ray fluorescence spectrometry (ED-XRF), X-ray diffraction (XRD), and scanning electron microscopy (SEM). The results reveal elevated concentrations of Ca (27.5–38.6%) and Fe (20.3–24.3%), indicative of a carbonate-clay composition with pyrite inclusions, characteristic of reducing sedimentation conditions. Excesses over the Clarke values were revealed for Ba, Co, Sr, Ni, and Mo, confirming the industrial potential of these shales as a source of rare and non-ferrous metals. The authors have developed a novel analytical approach based on reference concentrations (maximum and minimum values), enabling assessment of metal enrichment without identifying a dominant ore-forming element–particularly valuable for multi-element systems. The observed differences between mine and surface samples are attributed to post-sedimentary processes (leaching and oxidation). Our findings demonstrate a consistent lithological-geochemical shale type and highlight prospects for their comprehensive exploitation.

The considered part of the Mid-Atlantic Ridge extends from the Agulhas-Falkland fracture zone to the Bouvet triple junction. This segment has a contrasting topography. In its southern part, it has the morphology of an axial rise, while in its middle part it has the morphology typical for a slow-spreading rift valley. In the northern part, an area with transitional morphology can be distinguished. Three morphostructural complexes of transverse faults are distinguished, approximately corresponding to areas with various morphology. Such a different structure and segmentation of the spreading ridge became possible owing to the thermal influence of the Shona and Bouvet mantle plumes in the southern part of the considered segment and the Discovery mantle plume in its northern part. To reconstruct the morphostructure formation conditions in the ridge axial zone, physical modeling was implemented. In our experiments, we obtained various relief types and transverse discontinuities complexes depending on the distance from the thermal anomaly. They match the natural morphostructures. The modeling results suppose that the main formation conditions of the contemporary Mid-Atlantic Ridge terrain are spreading obliquity, thermal anomaly intensity, and the plume center position relatively to the spreading axis.

In development of fundamental ideas of the MSU professors V.I. Vernadsky, V.A. Kov­da and M.A. Glazovskaya in the field of the biosphere and its biogeochemical organization, the use of biogeochemical standards for parameterization of the technogenic impact on various ecosystems is proposed. To assess these standards quantitatively, the application of the critical loads methodology is shown. Algorithms to calculate the values of critical loads are proposed, in particular, for acid-forming and eutrophicating sulfur and nitrogen compounds emitted during the operation of various industries, including the oil and gas one. Using the example of the impact zone of the Central Asia–Center main gas pipeline planned for reconstruction, the maps of critical loads are presented and an assessment of the environmental risk in the coastal zone of the Caspian Sea is given.

This article continues the series of publications on the indicators of Holocene activation. Using the examples of the Volga and Amur rivers with their tributaries and the Razdolnaya River, the interaction of the river network with the Holocene orogenic system of the Alpine–Himalayan and Pacific mobile belts of Eurasia was studied. The river network is conformal to their orogenic system. Examples of the control of river valleys by shear systems of active faults are given. The influence of the rivers on the formation of erosional relief was studied. It is shown that loose sediments of the Mesozoic-Cenozoic rifts thrown up in the Holocene are actively destroyed by the river network, with a shear of up to many hundreds of meters. The rises on the riftogen framing and their internal rises, composed of strong pre-Mesozoic rocks, are weakly eroded. Many of them have a contrasting, nonequilibrium relief. The study was conducted within the framework of the pulsatingly expanding Earth model developed by the author.

For many decades, two main watercourses in the town of Volsk (Saratov region) have been serving the transit function of sewage effluents to the Volgograd reservoir. Sampling of bottom sediments was carried out along the length of the Verkhnyaya and Nizhnyaya Malykovka watercourses in order to analyze the specificity of the chemical composition of alluvial formations under technogenic impact conditions. The fraction of technogenic particles (plastics, coal, paint, synthetic fibers, etc.) was 4–20%. In terms of chemical composition, alluvium is represented by silicites with varying degrees of clay content., Bottom sediments are characterized as clay silicites, with the maximum content of heavy metals and organic matter (based on the value of loss on ignition) in the areas where wastewater enters the watercourses. The most typical contamination is with zinc, lead, and barium. The overall level of technogenic pollution of bottom sediments is high and can be named considerable in the upper reaches of the Nizhnyaya Malykovka watercourse only. In order to improve the ecological status of the watercourses, a set of measures is needed, including reconstruction and the creation of new infrastructure facilities of the urban environment.

Features of the prevalence of Cd and Pb dissolved forms in the water of sections of the Oka river and other rivers of the Russian Plain are considered. The influence of anthropogenic wastewater (industrial, municipal and agricultural) containing heavy metals is clearly manifested only in certain sections of the rivers of central Russia (Oka River, Volga River, and Moscow River) against the background of natural landscape and geochemical processes. An attempt is made to develop approaches to assessing the degree of anthropogenic influence on the water composition of various river sections, including those remote from pollution zones. An ecological and geochemical lead–cadmium indicator is proposed, which makes it possible to assess the anthropogenic impact and divide river sections into 3 categories (strong, medium and weak pollution, respectively). The river sections with low anthropogenic pollution have high values of this indicator corresponding to waters with the background (or close to background) concentration. A decrease in the indicator values means an increase in the role of anthropogenic effluents in the water composition, and estimates of the average concentrations of elements are technogenically dependent.

New data on potential fields are presented, compared with previous ideas about the regional structure and rift genesis of the Yenisei-Khatanga regional depression basement. Our 2D modeling based on geophysical data confirms the results of previous works regarding the identification of two types of the basement, and is consistent with the gravity-geodynamic concept of the formation of the Yenisei-Khatanga regional trough and the tectonic structures that complicate it, such as the Rassokhinsky and Balakhna megaridges. Also, as a result of our study of potential fields, the presence of a large volume of magmatic masses of ultrabasic and basic composition in the axial part of the Yenisei-Khatanga regional trough, Permian-Triassic age, was established, which confirms the rift mode of the region's development.

The old hypothesis by Academician V.I. Vernadsky of the biosphere being a geological force to build the surface and immediate interior of our planet is indirectly supported based on statistical data. According to occurrence data on findings of all known animal specimens and according to some characteristics of the tectonic activity of the Earth, the presence of several previously unknown cycles shortening from cycle to cycle (approx. By a factor of 1.51) over about a billion years, is substantiated. This leads to an idea of a cause-and-effect relationship between these two different categories of cycles. The influence of tectonics on biota, to one degree or another, has long been known. However, due to the mentioned cycles being rather accelerated, it is difficult to imagine that such strong acceleration in the tectonic cycles could arise due to some intra-tectonic causes, whereas the accelerated nature of biotic evolution due to some intrabiotic causes is quite possible. So, a conclusion arises of the mentioned contracting tectonic cycles being modulated by biota. Possible mechanisms of such influence are hypothesized, their clarification requiring additional research. This conclusion is revolutionary for geology and reveals biotic evolution’s previously unknown role as an active creator of global tectonic (cyclic) processes at a new, quantitative level, which is also revolutionary for evolutionary biology. But, regardless of these conclusions, the mentioned decreasing cyclicity is of interest itself, for the first time (statistically) speaking about the accelerated nature of evolution over such vast time periods.

To mark the 160^th anniversary of V.I. Vernadsky's birth, Lomonosov Moscow State University has organized an exhibition based on the theme of “living matter”, which to a greater or lesser extent permeates all the geospheres of our planet, provides many mechanisms of interaction between the geospheres and links between the planet and the cosmos. Natural exhibits demonstrate peculiarities of the geochemical transformation of individual organisms and their communities during the transition from the biosphere to the lithosphere, the diversity of biocosmic bodies in the history of our planet, the possibilities of modern sciences in reconstructing geobiosystems of the past. The structure of the exhibition includes a number of special blocks containing original exhibits and information, namely: “Scientist’s Cabinet” with information about the life path, scientific directions and some students and followers of Academician V.I. Vernadsky (connected to him through Moscow University). The cluster “Co-evolution of the Biosphere and Lithosphere” with disclosure of the mechanisms of transition of living matter and integral ecosystems into the “stone record” of the Earth, the structure of the pedosphere in a broad sense, the diversity of biogeoprocesses and their products in the history of the Earth, the formation of “archives of nature” in the geospheres, the functioning of geobiodynamically active zones on the example of the East European Platform; the cluster “University’s Lukomorye”, reflecting peculiarities of coastal geo-ecosystems for the general public (on the example of the Paleocene of the Volga region). Most of the exhibits of the exhibition have been obtained during the scientific and educational expedition “Flotilla of Floating Universities” (2015–2022) from the Volga region, the Caspian Sea, the Don region and the Urals and are considered in the future as the basis for the development of a model polygon of the “MSU Youth Museum”.

A popular science film “Brotherhood of Scientific Creativity. Floating University named after Vladimir Vernadsky” was shot to the 160^th anniversary of the birth of Academician V.I. Vernadsky. Work on the film was carried out during 2022–2023 as part of the activities of the scientific and educational expedition «Floating Universities Flotilla» (the field work regions being the Middle and Lower Volga river, Don river, Caspian sea). It includes the original projects “Academician Vernadsky’s Floating University” and “Floating mobile-network museum center”. The concept of the project basically provides for interdisciplinary research on a wide range of problems of the interaction of geospheres and the evolution of geoecosystems, which is being implemented by creative teams of scientists from various fields and students with the active involvement of the local population in interactive museum practices. According to the main message of the film, it is in such an environment of “scientific creativity”, in the format of field natural sciences, that the development of the ideological heritage of V.I. Vernadsky on the principles of the “Priyutinsky Brotherhood” and maturation of the “new Vernadskies” from novice researchers. The original system of scenario and producer’s decisions included the contrast of images «academician–student», a series of episodes of actual field research (the study of geological sections, the phenomenon of lithophagy, natural and anthropogenic objects) with the implicit inclusion of the “young Vernadsky” in the process (the character is an actor) and subsequent the culminating meeting of the “two Vernadskies” (montage) against the background of the Volga river – a symbolic handover of the baton of “scientific creativity” to a new generation.

The concept of biogeocenoses as structural units of the biosphere is reflected in the exposition of the department “Natural Zones” (Halls No. 18–20 on the 25^th floor) of the Moscow State University Museum of Earth Science: the interaction of the main natural components characteristic of the corresponding climatic conditions – soils, flora and fauna – is succinctly demonstrated. There are 15 full-scale exhibits of dry volumetric fragments of biogeocenoses: spotted tundra; forest tundra; swamps: flat-hummocky tundra, oligotrophic upland and mesotrophic lowland sedge; spruce-green grass; grass-grass and tipchak-grass steppes; subtropical mountain forest; alpine meadows; semi–deserts; deserts – clay, wormwood-solyanka and ilak belosaksaulnik on ridge sands; and savannas as well.

A new three-stage method for assessing the CO₂ balance in plant communities was formulated. The methodology includes not only taking into account the absorption of C-CO₂ during plantation vegetation, but also the processes occuring when using wood. In managed forests, when calculating the carbon balance, it is necessary to take into account the release of CO₂ not only at direct, but also at indirect consumption of technical energy for laying plantations, caring for them, and felling for final use. As a model, the consumption of technical energy in cultivating natural and genetically modified forms of aspen Populus tremula L. was calculated. The large role of indirect expenditure of technical energy in the C-CO₂ balance in forest plantations is shown. The use of a genetically modified clone of aspen significantly increases the productivity of plantations and CO₂ absorption from the atmosphere compared to its natural form. On a long time scale the final amount of CO₂ runoff from the atmosphere depends not only on the area of forests and their productivity, but also on the way of using wood. There is a highly effective way of using forest plantations to regulate the carbon dioxide content in the atmosphere, which is currently little paid attention, namely, the so-called substitution effect. Replacing energy-intensive materials (reinforced concrete, plastic, metal, and brick) with wood may be one of the main ways for the positive impact of forests on the CO₂ content in the atmosphere. The use of wood biomass from thinning, wood processing wastes, short-rotation forests for heat and power generation is a great reserve for replacing fossil hydrocarbons. The forest area needs to be expanded to increase wood production to replace energy-intensive building materials and generate biofuels.

Vladimir Vernadsky’s scientific and philosophical legacy still holds much value for the present-day world. It is largely concerned with the potential importance of two decentralized structures which can efficiently function on our planet. These are (i) the biosphere, construed as an integral entity, and (ii) the noösphere, a planet-wide human brains-based “film”. A fascinating mystery is the mechanism of the biosphere’s coordination and stable operation; important evidence has recently been presented concerning the probable regulatory role of the biosphere-wide field of signal molecules (ecomones) which include many neurotransmitters. As for the currently developing noösphere, humankind still has to invent strategies of conscious managing its activities. It is suggested that the functioning of the decentralized global noöspheric network should be subject to regulation by social chaperones. This term refers to network structures which subtly guide and promote the activities of other decentralized network structures in society.

The article summarizes information of the crystal morphological features of zircon from metamorphic rocks, its internal structure, crystal matrix chemism, and rare earth element distribution. These data make it possible to reveal discriminant features of zircon as depend on the origin of the substance crystallized and the conditions of its transformation during metamorphism. For a reliable assessment of the content of elements in zircon, it is necessary to perform a set of analytical methods, since the concentration of impurities varies significantly even in samples from the same rock. This makes it possible to determine the range of variations and to evaluate the dynamics of the distribution of elements in zircons from metamorphic rocks of various genesis.