Ivan V. Bragin

• PhD
• Senior Researcher at Far East Geological Institute, Russian Academy of Sciences

The article presents new data on the abundance and ways of soluted trace elements (Si, Fe, F, Al, Sr, Br, B, Mn, Ba, Ti, Li, Rb, Mo, As, U, Th, W, Sc, Y, REE, Hf) in thermomineral, surface and groundwaters of the northern Tien-Shan (Issyk-Kul intermountain depression). It is established that trace element composition of thermomineral waters is able...

See the retraction notice BIO Web of Conferences 116, 00001 (2024), https://doi.org/10.1051/bioconf/202411600001

The region surrounding the Elbrus volcano in the Great Caucasus is a popular tourist destination, home to native people and an area of the richest ore mineral resources. Based on the chemical composition of surface water, mineral, and groundwater in the Elbrus area, as well as statistical and thermodynamic calculations, waters with high concentrati...

The distribution and abundance of lanthanides in thermal waters of the northern Tien Shan (Issyk-Kul lake basin) were studied. Waters are represented by three types: Na-Cl-SO4-HCO3, Na-Ca-Cl-SO4 and Na-Ca-Cl, demonstrates alkaline pH (7.3–9.7) and Eh from -260 to +98 mV. Discharge temperature varies from 15 to 50oC, and total dissolved solids from...

The article presents new data on the ionic, microcomponent and isotopic composition of thermal waters of the Amga group classified as sodium-bicarbonate waters characterized by low mineralization (up to 0.2 g/l), high contents of silica (up to 24 mg/l), lithium, tungsten and molybdenum, and pH = 8.5–9.7. The influence of neotectonics and Quaternary...

The paper presents the results of half-century geochemical parameters monitoring of thermal spring, called Teply Klyuch, occurring outside volcanic activity territory of the Russian Far East. The case of unique tectonic and geological conditions leading to formation of such deposits is being discussed as well. The waters of the deposit are characte...

The chemical composition, distribution, and abundance of physiological groups of bacteria in thermal waters and microbial mats formed in the Nachikinsky, Malkinsky, and Verkhne-Paratunsky springs were studied. The degree of accumulation of microelements and formation of minerals by microbial mats of Kamchatka’s thermal springs was also analyzed. Th...

The geological and hydrogeological conditions of 19 occurrences of thermal waters in the southern Russian Far East are considered in this paper. Radon concentrations were measured in waters, and uranium and thorium concentrations were determined in host rocks and secondary minerals. The results were compared with the chemical composition of waters...

The chemical composition, distribution, and abundance of physiological groups of bacteria in thermal waters and microbial mats formed in the Nachikinsky, Malkinsky, and Verkhne-Paratunsky springs were studied. The degree of accumulation of microelements and formation of minerals by microbial mats of Kamchatka’s thermal springs was also analyzed. Th...

Geological and hydrogeological conditions of 19 occurrences of thermomineral water in the southern Far East of Russia are considered in the paper. Concentrations of radon were measured in waters and those of uranium and thorium in host rocks and secondary minerals. The results were compared with the chemical composition of waters and gases in the m...

The study of the influence of hydrodynamic factors on the occurrence of nitrogen thermal waters in crystalline massifs, by the example of the Kuldur field, is presented in the article. The results of two-dimensional modeling (based on FEFLOW code) of several variants of formation and circulation of therms in the study area are considered. Model param...

The current study contains a review of the REE abundance and distribution in thermal and cold mineral waters which are widely spread around Baikal Lake. Studied mineral waters were divided into CH 4 , N 2 and CO 2 -rich waters by the associated gas composition. We found that the highest REE concentrations were connected with thermal waters that wer...

This study presents the first regional hydrogeochemical portrait of the mineral waters and associated gases of the Central Asia region, shaped by the Tien Shan and the Pamir. A geochemical survey of more than 50 fluid discharges from the Northern Tien Shan to the Pamir was carried out between 2018 and 2019. Isotopic (δD, δ18O, d15N2, d13CCO2, d13CC...

Spring waters with high-pCO 2 content are widely distributed in the Sikhote-Alin region in Russia. Mukhen spa is one such spring located in the northern Sikhote-Alin region. This spa has two types of upwelling spring waters and exhibits distinct chemical signatures. One of the springs originates from a shallow aquifer and features hydrogen and oxyg...

In this paper, we summarize new chemical and isotopic data on thermal waters of the Talskoe deposit in the Magadan Oblast. The first data were obtained on the stable oxygen (δ18O) and hydrogen (δD) isotope composition of thermal and background waters, as well as on the oxygen (δ18O) and carbon (δ13C) isotope composition of hydrocarbonate ion for th...

Low-enthalpy thermal waters (30–70 °C) with nitrogen as a dominant associated gas are spread within the active continental margin of the Russian Far East (east and north of the Okhotsk Sea Coast) and traditionally are of great importance for recreation and balneology facilities. The thermal waters are chemically classified into three groups: (i) Na...

The article presents the results of isotope-chemical research of the Tavatum thermal water deposit (coast of the Sea of Okhotsk, Magadanskaya Oblast), as well as surrounding underground and surface waters. For the first time, data on the content of isotopes of oxygen and hydrogen in the underground and surface waters were obtained, and the analysis...

In this paper, we summarize new data on the chemical and isotopic composition of thermal wa-ters of the Talskoye deposit in the Magadan Oblast. We were the first to obtain the data on the content of stable oxygen (δ18O) and hydrogen (δD) isotopes in thermal and background waters, as well as oxygen (δ18O) and carbon in bicarbonate ion (δ13C), even t...

В работе рассмотрены примеры появления в амагматических районах Земли термальных (нетипичных) вод, которые резко отличаются от классических азотных маломинерализованных терм забайкальского типа. Эти отличия связаны с необычным газовым составом (присутствием высоких концентраций СН4 или СО2) или высокой минерализацией воды. В качестве примеров рассм...

The article presents the results of the hydrogeochemical study of thermal groundwaters from the Kuldur spa (Jewish Autonomous Region, Russia). The main characteristics of these groundwaters are high temperature (73 ᵒС), low TDS (up to 0,38 g/l), and alkaline (pH 9). The dominated cation is sodium, and the anion is hydrocarbonate. Water is enriched...

The behaviour and hydrogeochemistry of rare earth elements were investigated in the surface and groundwaters of Chistovodnoe thermal area (Far East of Russia). The waters were classified according to the pH into neutral waters with pH ranging from 6.6 to 7.3 and alkaline waters with pH between 7.5 and 9.3. The REE concentrations in the river waters...

New data on hydrogeochemistry of thermal waters of the Okhotsk sea-shore (Ulskiy, Annensky Tumnin, Talaya, Paratunka, Dagi and Lesogorsky) is presented in the paper. Sikhote-Alin ridge thermal waters with crystalline host rocks refer to sulfate-hydrocarbonate or hydrocarbonate sodium fresh waters with elevated silicon content (up to 41 ppm), lowest...

A study of the distribution of rare-earth elements in surface and underground waters, waterbearing rocks, as well as secondary mineral formed by the thermal waters of the Paratunka and Viluchinsky hydrothermal systems of Kamchatka was carried out. It was found that the REE content, their distribution and fractionation differ depending on the geoche...

The largest CO2-rich mineral water resource in the Sikhote-Alin ridge of Eastern Russia at Gornovodnoe village was studied. The high-pCO2 groundwaters are cold (5.8–10 °C) with pH 5.9–6.5, TDS varied from 1.2 to 2.7 g/l and belong to Ca–Mg (Ca–Na)–HCO3 type. New data on geology, mineralogy, hydrogeology and hydrogeochemistry, in conjunction with is...

Original data on the isotopic and chemical composition of mineral waters, cold ground and surface waters, as well as hydrogenic deposits of the Antonovsky manifestation of hydrogen sulfide mineral waters (the coast of the Tatar Strait, Sakhalin Island) are provided in the article. For the first time, data on the content of oxygen and hydrogen isoto...

Актуальность исследования обусловлена необходимостью разумного использования природных ресурсов и термоминеральных вод, в частности уникального бальнеоклиматического курорта Ходжа-Оби-Гарм, локализованного в центральной части отрогов южного склона Гиссарского хребта. Одной из наиболее актуальных проблем для исследования остается изучение микрокомпо...

Distribution and abundance of rare earth elements in Volchansky Spa of CO 2 -rich mineral waters and REE fractionation during the formation of Fe 2 O 3 precipitates on the Sakhalin Island (the Far East of Russia) were studied. The main common features of waters are Na-Cl-HCO 3 hydrochemical type, high total dissolved solids (5.4-6.5 g/L), a slightl...

Low-enthalpy thermal waters (30-50°C) of HCO 3 -Na and HCO 3 -SO 4 -Na types with nitrogen as a dominant associated gas discharge on the southern continental margin of the Russian Far East and traditionally are of great importance for recreation and balneology facilities. All studied thermal waters have meteoric origin and relate to Palaeocene gran...

New data on hydrogeochemistry of thermal waters of the Russian Far East is presented in the paper. Ul'skiy, Annenskiy and Tumninskiy thermo-mineral waters belong to low-mineralized (TDS<320 mg/l), alkaline (pH~9.3), N2-rich, bicarbonate or sulfate-bicarbonate sodium type of water with elevated concentrations of silicon acid (up to 120 mg/l), fluori...

The report presents original data on the isotope and chemical composition of the nitric thermal, cold underground, and surface natural waters, along with the water-enclosing rocks, of the Ulsk occurrence of thermal mineral waters (coasts of the Sea of Okhotsk, Khabarovsk krai). The data on the concentrations of oxygen and nitrogen isotopes and rare...

Four types of springs occur on the southwestern slope of Baransky volcano: solfataras, “blue lakes”, thermal springs and “mud boilers”. Different matter sources, feeding these springs, divide them into three genetic groups: hydrothermal fluid, volcanic gas and “mature waters”. This paper presents new data on geochemistry, hydrochemistry and ecologi...

The geochemistry of rare earth elements in cold, high pCO 2 mineral waters was studied through the sampling of springs and boreholes of Sakhalin Island (the Russian Far East). The main common features of studied waters are the Na-Cl-HCO 3 hydrochemical type, high TDS (6–20 g/L), alkaline pH (6.2–7.4), and reducing environment (-195 to +62 mV). The...

Two types of cold CO 2 rich groundwaters are located within the northern part of the Sikhote-Alin ridge: the first type is a Ca–Mg–HCO 3 water with low TDS content (≤ 1.7 g/l) and high concentrations of Fe ²⁺ , Mn2 ⁺ , Ba2 ⁺ , and SiO 2 , whilst the second type is a Na–HCO 3 water with a high TDS content (≈ 14 g/l) and elevated concentrations of Li...

The paper presents data on the content and distribution of rare earth elements (REE) in the high pCO 2 mineral waters of the Caucasus mountain-folded region. It is shown that the concentrations of REE total are rather high in the studied waters. However, they vary in a very wide range (from 0.46 to 50.37 µg/L). A characteristic feature of these wat...

Chemical composition and saturation degree of the Annenskiy thermal waters to minerals of water-bearing rock have been considered in the manuscript. It is shown that the thermal waters are low mineralized, alkaline and belong to HCO 3 -Na type. The thermal waters-rock system is equilibrium-nonequilibrium. It means that the waters dissolve primary m...

A small number of ecological-trophic groups of bacteria are noted in saline groundwater’s (30-50 g/L). The obtained data show, that thionic and halophilic forms of saprophytic bacteria dominated, developing in presence of 10% NaCl. Among saprophytic microorganisms, rod-shaped forms of the genus Microbacterium sp. significantly dominated. A signific...

This paper presents data on the composition of the low-enthalpy thermal waters from the unique Khoja-Obi-Garm field located at the central part of the southern slope of the Gissar Range, in the gorge of the Khoja-Obi-Garm River, at an altitude of 1740-1960 meters. In this place, the eponymous SPA-center was built. Groundwaters from springs and bore...

New data on geochemistry of the Paratunka deposit of mineral waters—Russian biggest geothermal system is presented in this paper. Studied waters are thermal (T = 45–80 °C), alkaline (ph = 7.9–8.7), belong to Ca–Na Cl–SO4 type with reducing environment (Eh = − 150 to − 180 mV) leading to Ce- (+ 0.31) and Eu- (+ 0.8) anomalies. Evolution of chemical...

This paper reports the results of the experimental determination of the coefficient of sorption of rare-earth elements and yttrium (REY) under conditions of acidic pH using several strains of heterotrophic bacteria (Microbacterium sp., Curtobacterium sp., Bacillus subtilis, Pseudomonas putida, and Bacillus pumilis) that are widespread in natural an...

This study shows the experimental results of the rare earth element and Y (REY) distribution patterns between heterotrophic bacteria and water under acidic pH conditions for five different bacterial strains (Microbacterium sp., Curtobacterium sp., Bacillus subtilis, Pseudomonas putida, Bacillus pumilis) which are widespread in natural and technogen...

A 10-year monitoring period of rare earth element and yttrium (REY) contents and REY pattern shapes was carried in four different types of groundwater (fresh, rich-CO2, low thermal and brackish) from Sikhote Alin ridge. Obtained data reveals that REY concentrations and behavior strongly vary in different chemical groundwater types and depend on man...

Baransky is an active volcano, located in southern Kurile arc, on the subduction zone between Okhot and Pacific plates. Being active during the last 50 years, it is still a threat to locals and air transport. Geochemical study of hydrothermal system of Baransky volcano gives us an opportunity to understand processes occurring in volcanic structure....

The behaviour of major ions and rare earth elements (REE) was studied in the hot springs of the volcano Mutnovsky (Kamchatka). We found that the concentration of REE depended on the geochemical type of water, with maximum content of REE being in Ca-SO4 waters. Overall, this study shows that the pH has a significant impact on the content and fractio...

The book aims to address the fundamental problem associated with the study of rare earth elements (REE ) in the water cycle : precipitation - surface water and groundwater in areas with natural and anthropogenic anomalies.The area of study is the Far East Russia where widely manifested different types of natural waters (thermal -related with modern...

The book aims to address the fundamental problem associated with the study of rare earth elements (REE ) in the water cycle: precipitation - surface water and groundwater in areas with natural and anthropogenic anomalies.The area of study is the Far East Russia where widely manifested different types of natural waters (thermal -related with modern...

This paper presents original data on the content and distribution of major and rare-earth elements in the modern hydrothermal systems of the Paratunka and Bol’shebannyi thermal water deposits. In spite of the similar geochemical type of the waters, the individual sites of the hydrothermal systems differ in the major component composition, which is...

Geological and hydrogeological characteristics of the Lozovy ridge (Southern Primorye) are studied, as far as karst phenomena are widely distributed within its boundaries. Water-bearing rocks of the karst water source "Silver Spring" ("Serebryany Klyuch"), which is located near the bottom of the "Bear's fang" ("Medvezhiy klyk") cave, are investigat...

The distribution and geochemistry of rare earth elements (REE) in anthropogenic, technogenic and natural surface waters of southern and eastern Primorye, Far East of Russia, are presented in this study. The obtained results indicated that most of REE (up to 70%) were transported as suspended matter, ratio between dissolved and suspended forms varin...

Analysis of the distribution and fractionation of rare earth elements in the groundwater of the Sikhote Alin fold region reveals that their concentrations, geochemistry, and fractionation ability vary in different groundwater types depending on many factors, including the pH–Eh parameters and mineralization of the solutions and the composition of t...

Studied waters belong to warm (T=30–50°C), alkaline (pH=8.9–9.3), low mineralized (TDS<235 mg/l) Na–HCO3 or Na–SO4–HCO3 thermal waters with high content of SiO2 (up to 81 mg/l) and F (up to 3.9 mg/l), occur on modern volcano–tectonic rejuvenated areas of Eastern Sikhote–Alin orogenic belt. Low 3He concentration as well as N2/O2 and N2/Ar ratios exc...

The behavior of REE in the rivers of eastern and southern Sikhote Alin (Primorye) is discussed. The high-resolution ICP-MS (HR-ICP-MS) technique is used for determining the REE concentrations and degree of REE fractionation in the background unpolluted rivers and in the Rudnaya River, affected by mining industry waste products. In addition, water s...

New isotopic and chemical data on the sodium bicarbonate water and associated gases from the Razdolnoe Spa located in the coastal zone of Primorsky kray of the Russian Far East, together with previous stable isotope data (δ18O, δD, δ13C), allow elucidation of the origin and evolution of the groundwater and gases from the spa. The water is character...

The low-temperature thermal water in the Primorye Region of the Far East of Russia is traditionally important for medical purposes. A hydrogeochemical study based on 30 samples, including thermal springs, streams and well water has been carried out in the Goriachii geothermal area. The initial year-round survey on the condition of the spring water...

This study presents new data on major element contents, trace and REE concentration of groundwater in Shmakovka Spa, located in the western part of Primorye, in the Far East of Russia. The studied area is characterized by two types of groundwater issuing from springs and wells: fresh water with low mineralization (TDS up to 100 mg/l), and high pCO...

To determine the impact from volcanic fluid on river water quality, we sampled all visible water streams in the Baransky watershed. Using discharge data from Kipyaschiy Creek and the Sernaya River in conjuction with the concentration of components, we calculated the impact of volcanic fluid onto environmental waters. Total washout of components in...

A groundwater radon monitoring in the southern and western part of Sakhalin Island was carried out in 2014 in order to study the correlation between radon anomalies and the seismic activity of the region. The objects of investigations were located within large tectonic dislocations of the island—the southern part of the Central Sakhalin fault and t...

This report presents original data on the hydrochemical, isotope, and microbiological composition of nitric thermal waters of the Goryachii Klyuch spring (Primorskii Krai). The first-performed year-round surveys of the conditions of the spring water and the environment have shown that the ground waters heated over 30°C in fractured siliceous Upper-...

The Sernaya River and its tributary the Kipyashaya River are the only rivers that drain all thermal waters coming down the Baransky volcano (Iturup, the Kuril Islands). Hydrological parameters and a chemical composition relating to these rivers and all inflow streams coming from the volcano were measured from August to October 2013. The main aims o...

To better understand the factors controlling the growth of larch trees in Arctic taiga-tundra boundary ecosystem, we conducted field measurements of photosynthesis, tree size, nitrogen (N) content, and isotopic ratios in larch needles and soil. In addition, we observed various environmental parameters, including topography and soil moisture at four...

Distribution, structure and taxonomic composition of microorganisms and algae in hot springs Goryachyi Klyuch, Chistovodnoe and in the surface waters of the Chistovodnaya River and Teplyi Creek were studied. As the results of the investigation – microorganisms were widespread in the thermal and surface waters, and within a year they most actively p...

This is the first report describing the parallel measurement of deuterium (δD), tritium (3H), and oxygen-18 (δ18O) in precipitation, seawater, surface and groundwater in relation to the Russian Far East. δD and δ18O demonstrate that the studied waters have a meteoric origin, and variations are the result of water-rock-gas interactions. All studied...

Methane is effective greenhouse gas (GHG), which is 20 times stronger than carbon dioxide. Being stored in permafrost areas and released as the result of the global warming, it accelerates the processes. Organic matter stored in the permafrost may also be converted to released by permafrost degradation, which in tern results emissions of GHG. We pr...

Long-term (2002-2010) extensive research on natural waters of the southern Far East of Russia have allowed characterizing distribution in them of stable and radioactive isotopes of oxygen and hydrogen. It is shown that the isotope composition of the precipitations in the southern Far East is simplified from the southern to northern areas. As compar...

Along the Sikhote-Alin ridge of the Russian Far East, 30° to 50°C thermal waters emerge in a series of sodium bicarbonate and sodium bicarbonate-sulfate type springs. Atmospheric nitrogen and oxygen are the dominant dissolved gases. Rare earth element data constrain understanding of water-rock interaction occurring in the source region. Thermal wat...

In the Far East Russia, nitric thermal springs are wide spread along coastal zone (sea of Japan and Okhotsk sea) and were formed owing to the youngest tectonic movements of the Sikhote Alin ridge (Primorye and Khabarovsk provinces) (Fig.1). Areas are typically confined to deep brecciation zones, which facilitate penetration of infiltration ground w...

Studies of the brines located in the coastal zone of the south Primorye region have been initiated. The brine is located in an estuary and is characterized by shallow burial depth (6–300 m), Ca-Na-Cl type, and a salinity of 50 g/L. Based on chemistry of the brine, ion ratios (Cl/Br, rNa/rCl), rare earth elements concentrations and isotopic characte...

New geochemical data are reported on the low temperature thermal waters in Siberia and the Far East Russia. The studied alkaline waters belong to the HCO3–Na type with significant trace element variations. The oxygen and hydrogen isotopic data of thermal waters suggest their meteoric origin. Dissolved gas is mainly nitrogen of atmospheric origin. T...

New data on gas-geochemistry of thermal waters of Sikhote-Alin folded area is shown in the paper. Studied waters belong to alkaline HCO3 – Na hydrogeochemical type. Main gas is nitrogen, going from the atmosphere. Therms are of meteoric origin, water exchange time is low. It is proved by hydrogen and oxygen isotopic data and by geochemical modeling...

This paper reports new geochemical data on the low temperature nitric thermal waters of Sikhote Alin. The studied alkaline waters belong to the HCO3-Na type with significant trace element variations. The waters demonstrate an increase in temperature and TDS from the south northward of Sikhote Alin. The oxygen and hydrogen isotopic data suggest thei...

The deep saline and brackish waters in coastal zone of the Primorye region have been studied in this investigation.Two types of groundwater are disclosed inwells of studied area: salinewater with mineralization (TDS) - 4.5-13.7 g/l and brackish water with TDS - 2.5-6.0 g/l. Based on δ 18O and δ 2H isotopic ratios, Na/Cl, Cl/Br ratios, origin and ev...