Results
2018-2024
A geological map of the basement of the Yugansk-Koltogorsk region of Western Siberia was constructed. Density models of two areas of the Yugansk and Koltogorsk zones were created, which made it possible to substantiate the forecast of the oil content of the basement, as well as to clarify the ideas about the deep structure of the central part of the West Siberian platform.
Иванов К.С., Костров Н.П., Вахрушева Н.В., Ерохин Ю.В., Берзин С.В., Погромская О.Э., Степанов А.Е. (2018) Геологическое строение фундамента центральной части Западно-Сибирской платформы (Юганско-Колтогорский регион). Екатеринбург: ИГГ УрО РАН, 325 с. ISBN 978-5-7691-2516-4. Тираж 300 экз.
The article summarizes the results of modern studies of geological complexes that make up the unique Rai-Iz ultramafic massif in the Polar Urals, which contains industrial deposits of chrome ores. The evolution of the ultramafic substance during the long metamorphic history of the massif is traced. Based on the analysis of olivine-chrome-spinel paragenesis, performed both for early associations of ultramafic rocks and for the products of their metamorphism and chromitites localized in them, a conclusion is made about the P-T-fO2 conditions of formation of rock complexes and mineralization. The article presents the results of mineralogical and geochemical studies of chromitites, ultramafites, and vein formations that participate in the structure of the Rai-Iz massif.
Вахрушева Н.В., Ширяев П.Б., Степанов А.Е., Богданова А.Р. Петрология и хромитоносность ультраосновного массива Рай-Из (Полярный Урал). – Екатеринбург: ИГГ УрО РАН, 2017. – 265 с. ISBN 978-5-7691-2496-9. Тираж 300 экз.
The decisive role of mantle superplumes in the formation of large intra- and pericontinental basins has been established. The main processes leading to a reduction in the thickness of the consolidated continental crust and thinning of the lithosphere as a whole are the plume-induced decrease in the thickness and strength of the lithosphere (increase in its ability to stretch), and the subsequent rift-induced thinning of the upper, sialic part of the crust, its partial replacement by ultramafic-mafic rocks due to "tectonic erosion" and underplating, with a possible transition to spreading. This creates conditions for the accumulation of a sedimentary cover of abnormally high thickness and active generation of hydrocarbons. Cases of repeated action of a superplume in an already formed basin have been recorded, which creates a cumulative effect.
Пучков В.Н. (2018) Плюмы – новое слово в геологии Урала. Литосфера, 18(4), 483-499.
It was established by the monofractions of pyroxenes from the basalts of the Guslinskaya R-430 borehole that the Ar-Ar age of 268.4±7.5 million years was obtained. In the Taurovskaya 503 borehole it was 268.1±7.5 million years. Thus, volcanism in the axial rift zones of the basement of the West Siberian Plate began much earlier than previously thought, and significantly earlier than on the Siberian platform. It is believed that very significant volumes of Early Triassic basaltic magmatism erupted synchronously both on the Siberian platform and in Western Siberia over a very short period of time - 249.4±0.5 million years (Reichow et al., 2002, etc.), which, according to many scientists, caused the largest extinction of species in the history of the Earth at the Paleozoic-Triassic boundary. But for Western Siberia, these conclusions were initially based on an unrepresentative amount of data.
Иванов К.С., Ерохин Ю.В. (2019) О времени заложения системы триасовых рифтов Западной Сибири. Доклады АН, 486(1), 88-92.
The first find of solid bitumen in plagiorhyolites of the Sinara River (Kataisky District, Kurgan Region), which are part of the Early Triassic Turin volcanogenic-sedimentary series on the border of the Urals and Western Siberia, has been established and described. Based on the data of complex analytical studies, their belonging to the group of lower anthraxolites has been established. The formation of solid bitumen in the acidic volcanics of the Sinara River occurred at a late stage of the formation of the plagiorhyolite body at the time of the formation of chalcedony tonsils and secretions. The source of the substance for the anthraxolite could have been both the enclosing sedimentary rocks and deep (mantle) hydrocarbon fluids.
Erokhin Yu.V., Ivanov K.S. (2019) On the discovery and study of anthraxolite in Triassic plagiorhyolite on the border of the Ural and western Siberia. Geosciences Journal, 23(2), 273-279.
The chemical Th-U-Pb dating (monazite) method was used to obtain data on the age of metamorphism of the rocks of the Itkul suite of the Sysert metamorphic complex (Middle Urals). Staurolite-garnet-amphibole-chlorite rocks from the Glubochinskoye abrasive garnet deposit were studied. The obtained age varies from 273 million to 314 million years with a weighted average of 297 ± 12 million years and a calculated isochron of 293 ± 26 million years (MSWD = 0.23). The age of accessory monazite shows that the formation of metamorphic staurolite-garnet-amphibole-chlorite rocks of the Itkul suite occurred in the Early Permian. This dating is one of the latest among the published isotopic data on the age of metamorphic rocks of the Sysert complex, which, in all likelihood, recorded either the age of the substrate or superimposed tectonic events. Probably, metamorphic rocks in the northern part of the Sysert metamorphic complex were formed as a result of a powerful thermal event that occurred at the boundary of Permian and Carboniferous times.
Пономарев В.С., Хиллер В.В., Ерохин Ю.В. (2019) Th–U–Pb-датирование монацита из метаморфических пород иткульской свиты Сысертского комплекса (Средний Урал). Вестник Санкт-Петербургского университета. Науки о Земле, 64(2), 315-327.
The complex oroclinal structure of the Ural-Pai-Khoy bend of the initially rectilinear island arc is characterized as a result of a two-stage collision of the arc with a rectangular protrusion of the Baltica continent in the Early Permian and Early Jurassic. New data on the geology and tectonics of the northern Urals and its continuation in the basement of the West Siberian Plate allow not only to clarify and supplement the characteristics of the geological features of the region, but also to substantiate fundamentally new conclusions. The vertical division of the complexes developed in the region into structural stages is specified: Archean‒Paleoproterozoic, Riphean‒Vendian (Timan), Paleozoic‒Early Jurassic (Uralian, which consists of the Uralian and Ancient Cimmerian substages of the same name), platform and neo-orogenic. The data are presented to substantiate the primary unified island-arc nature of the Shchuch'insky, Voikarsky and Khulginsky sections of the Tagil arc, while an alternative interpretation of the origin of zircon clusters from island-arc complexes is given, for which a mantle rather than a microcontinental source is assumed. The use of the PUT seismic transect and drilling data made it possible to clarify the synform structure of the axial part and eastern side of the Tagil synclinorium and the transition to the East Ural zone. New data were obtained confirming the presence of a northwest-trending tectonic section beneath the central part of the Yamal Peninsula, which corresponds to the contact of the Paleozoides and the submerged part of the Siberian platform. The abnormally high concentration of hydrocarbon deposits on the Yamal Peninsula is associated with the presence of a powerfully developed rift junction above the superplume branch and a high-density heat flow, which characterizes an area of increased geodynamic activity, permeable to deep fluid-gas flows.
Пучков В.Н., Иванов К.С. Тектоника Севера Урала и Западной Сибири: общая история развития // Геотектоника, 2020, № 1, с. 41-61.
The first data on the study of refractory forsterite-rich inclusions in carbonaceous chodrites using the electron backscatter diffraction (EBSD) method were obtained. It was found that the clinoenstatite rim in forsterite-rich inclusions has a reactionary nature and was formed as a result of interaction with nebular matter. Such interaction was widespread, but not all-encompassing, and may be associated with the processes of chondrule formation. It was shown that the rim almost entirely consists of clinoenstatite. An internal block structure of forsterite grains with block misorientation of up to 10° was revealed.
Берзин С.В., Коротеев В.А., Дугушкина К.А., Шиловских В.В., Замятин Д.А., Степанов С.Ю. Природа клиноэнстатитовой каймы в тугоплавких богатых форстеритом включениях из углистых хондритов: первые результаты исследования методом дифракции отраженных электронов (EBSD) // Доклады РАН. Науки о Земле. 2020. Т. 495. № 1. С. 15-18.
We present an analysis of the plume/LIP history of one of the largest orogenic belts, the Uralian. The following events were identified: the Navysh event, 1750 Ma, occurred simultaneously with the formation of igneous units in Sarmatia and Karelia (in other parts of the Baltic), as well as in such ancient crustal blocks as Laurentia, Siberia, etc. The Mashak event, 1385 Ma, associated with a series of mineral deposits, coincided with the onset of the breakup of the Nuna supercontinent, and is believed to have been associated with global environmental consequences at the Calymmia-Ecstasia boundary. The Igonino event at about 720 Ma can be roughly correlated with 720 Ma – LIPs in northern Laurentia and other regions, and can be tied to the onset of the Sturtian glaciation (Tonia-K Cryogenian boundary). The Kidryasovskoye (ca. 480 Ma) and Ushatskoye (450 Ma) events are correlated in age with events in Siberia and other crustal blocks; the ages correspond approximately to the end of the Cambrian and the end of the Ordovician. The Timaiz event (370 Ma) belongs to the much larger Kola-Dnieper LIP of the same age, which occupied a large area in Baltica and is correlated with a coeval (Late Devonian) and equally large province in Siberia. The Magnitogorsk (350-320 Ma) event immediately follows the collision of the Magnitogorsk island arc with the passive margin of Baltica and the detachment of the slab. Three orogenic/postorogenic intraplate episodes are also described: the Stepninsky (285 Ma) monzogabbro-granosyenite-granite complex, the Kalymbaevsky (308-304 Ma) lamproite complex, and traps of the same age as the Siberian ones and united into the Ural-Siberian LIP, the formation of which gave rise to the Permian mass extinction of organisms.
Puchkov V.N., Ernst R.E., Ivanov K.S. The importance and difficulties of identifying mantle plumes in orogenic belts: An example based on the fragmented large igneous province (LIP) record in the Ural fold belt // Precambrian Research. 2021. V. 361. 106186.
We (Vakhrusheva N.V., Erokhin Yu.V.) together with our Moscow and St. Petersburg colleagues from Moscow State University, the A.E. Fersman Mineralogical Museum of the Russian Academy of Sciences and St. Petersburg State University (Pekov I.V., Zubkova N.V. et al.) have identified a new mineral – savelyevaite (IMA No. 2021-051), Mg2Cr3+O2(BO3). Savelyevaite is a natural chromium analogue of ludwigite and was found in chromitites of the Voikaro-Synya massif (Polar Urals). The mineral was approved on September 3, 2021 by the International Mineralogical Association.
Pekov I.V., Vakhrusheva N.V., Zubkova N.V., Yapaskurt V.O., Shelukhina Y.S., Erokhin Y.V., Bulakh M.O., Britvin S.N., Pushcharovsky D.Y. (2021) Savelievaite, IMA 2021-051. CNMNC Newsletter 63; Mineralogical Magazine, 85.
Systematic mineralogical studies allowed us to fully characterize the patterns of gold mineralization in hydrothermal-metasomatic formations of the Vorontsovskoye deposit. Based on the results obtained, the geological and genetic model was adjusted to identify objects-analogues of the Vorontsovskoye deposit in the structures of the Ural folded region.
Varlamov D.A., Kiseleva D.V., Sharpyonok L.N., Škoda R., Kasatkin A.V. The Features of Native Gold in Ore-Bearing Breccias with Realgar-Orpiment Cement of the Vorontsovskoe Deposit (Northern Urals, Russia) // Minerals. 2021. V. 11. Iss. 5. Article number 541.
Inorganic geochemistry of oils from northern Eurasia based on ICP-MS data is evidence in favor of deep genesis of oil. The contents of 50 rare, rare earth and other elements in oils from a number of fields in Western Siberia and Tatarstan were studied. The contents of a number of elements in oils are quite comparable with their concentrations in ultrabasites, with extremely low contents of most elements. The REE diagrams show the prevalence of light lanthanides and a positive europium anomaly. An increased content of platinoids was found in the oils of Tatarstan. It was shown that the oils have an extremely specific microelement composition, not inherent in any other substances on Earth. Taking into account the increased content of transition elements and platinoids, we support the assumption of academician A.A. Marakushev about the "ultramafic" geochemical specialization of oils.
Ivanov K.S., Erokhin Y.V., Kudryavtsev D.A. Inorganic Geochemistry of Crude Oils of Northern Eurasia after ICP-MS Data as Clear Evidence for Their Deep Origin // Energies, 2022. V. 15. # 48. (IF 3.252)
As a result of generalization of data on core analysis of more than 300 deep wells, modeling of anomalous gravitational and magnetic fields, a new geological map of the pre-Jurassic basement of the Ural zone of the West Siberian oil and gas megabasin (within the Khanty-Mansiysk Autonomous Okrug) is presented. The Devonian age of metamorphic complexes of the region is shown. It was established that the formation of grabens filled with basalts began in the Permian period (275 ± 10 million years) in the sublatitudinal compression mode. At the boundary of the Permian and Triassic periods (249 million years), sublatitudinal compression was replaced by extension and submeridional grabens appeared, and basalt outpourings reached their maximum. The obtained results allow us to significantly clarify the geological history of the formation and structure of the basement of the western part of Western Siberia.
Ivanov K.S., Kostrov N.P., Erokhin Y.V., Ponomarev V.S. Geological structure and historical development of pre-Jurrasic basement of West Siberia oil- and gas-bearing megabasin Karabash Zone // Open Journal of Geology, 2022. Vol. 12. № 10. P. 717-738.
A new model for the formation of crystal-bearing deposits in the Subpolar Urals is proposed. Six main types of quartz veins are identified.
The age of micas from both the deposits and the host metamorphic schists was studied using the 40Ar/39Ar method (255 ± 2 million years). The figures obtained not only reflect the age of the crystal-bearing deposits in the Subpolar Urals, but also record the moment of the rise of the entire Central Ural uplift above a depth of 10 km, accompanied by a sharp drop in fluid pressure and adiabatic expansion. At the same time, a system of meridional graben rifts was formed in the Urals and Western Siberia.
Burlakov E.V., Ivanov K.S., Berzin S.V., Travin A.V., Khanin D.A. Age and Conditions of Generation of Quartz Crystal Deposits in the Subpolar Urals. Geology of Ore Deposits, 2024, Vol. 66, No. 6, pp. 882–902. http://doi.org/10.1134/S1075701524700387.
The mineralogy of copper slags from the Sysert ironworks (1733-1930) has been studied. The slags are composed of fayalite-hedenbergite aggregate with sulfides (troilite, chalcopyrite, chalcocite, unknown Cu-Fe phases), as well as magnetite, glass and copper. The slags were formed as a result of blast furnace copper production; oxidized ores from the Gumeshevsky mine (Polevskoy) were used as raw material. The temperature is estimated at 1200 °C.
Ерохин Ю.В., Пономарев В.С., Захаров А.В., Леонова Л.В. (2023) Минералогия медных шлаков Сысертского железоделательного завода, Средний Урал. Минералогия, 9(2), 30-40.
In the extreme south of the Urals, zircons from eclogites and amphibolite were dated in metamorphites of the East Mugodzhar zone. Of the 4 eclogite samples, close (and the most “ancient” – 520±4 million years) concordant age values were obtained in 3 samples, which probably corresponds to the age of the protolith. Concordant dates of 472±3 million years and 379±3 million years reflect the time of the main stages of metamorphism of the East Mugodzhar, the more ancient – high-pressure, and the second – amphibolite facies metamorphism. The presence of ancient and at the same time different-aged zircons, probably with traces of rounding, indicates the primary sedimentary nature of the studied amphibolites. The youngest zircons from the Mugodzhar eclogites have an age of 282±2 million years, corresponding to the collision stage. The obtained data show that the Mugodzhar metamorphic complexes are not Early Proterozoic or Riphean formations (as was previously believed), but represent Lower-Middle Paleozoic complexes of the middle part of the earth's crust. That is, these metamorphites by their nature are fragments of the deep part of the island-arc system of the eastern sector of the Urals, which were later brought to a near-surface level during the rise and erosion of individual regions of the Urals.
Ivanov, K.S., Ponomarev, V.S., Puchkov, V.N. et al. Isotope U–Pb SHRIMP Dating of Eclogites from the Mugodzhar Range (Kazakhstan). Dokl. Earth Sc. 519, 2027–2036 (2024). https://doi.org/10.1134/S1028334X2460405X
Grants and programs
The topic of the state assignment of the laboratory: "Tectonics, geodynamics, evolution and minerageny of structural-material complexes that arose during the formation of the continental crust (on the example of the Paleozoic Ural-Mongolian mobile belt and the West Siberian plate)"
2023-2027. State registration number 123011800014-3
RSF grants:
Gabbro-ultramafic complexes of the Urals: geotectonic position, structural-material evolution and criteria for the formation of chrome mineralization
2022 — 2024 | supervisor: D.Sc. Ivanov Kirill Svyatoslavich
Geological and genetic model, structural and material patterns and industrial significance of noble metal (Au-Pt-Pd) mineralization in igneous rocks of the dunite-clinopyroxenite-gabbro formation
2020 — 2022 | supervisor: PhD in Geology and Mineralogy Stepanov Sergey Yuryevich
The foundation of the West Siberian oil and gas megabasin: geodynamic history, assessment of oil potential
2016 — 2018 | supervisor: D. Sc. in Geology and Mineralogy Ivanov Kirill Svyatoslavich
Copper metallurgical slags of the Sverdlovsk region (mineralogy, ecology and processing)
2014 — 2025 | supervisor: PhD in Geology and Mineralogy Erokhin Yuri Viktorovich
RFBR grants:
No. 16-05-00041-a (scientific supervisor, Doctor of Geological and Mineralogical Sciences Ivanov K.S.)
No. 18-05-70016 (scientific supervisor, Doctor of Geological and Mineralogical Sciences Ivanov K.S.)
No. 19-35-90059 graduate students (supervisor: Candidate of Geological and Mineralogical Sciences Berzin S.V., graduate student - Dugushkina K.A.)
No. 18-35-00151/18 (head: Ph.D. Stepanov S.Yu.)
and many others.
Awards
Yuri Viktorovich Erokhin became the first laureate of the Academician L.D. Shevyakov in 2002 for a series of works on the mineralogy and petrography of ophiolite complexes of the Urals.
Olga Eduardovna Pogromskaya is a laureate of the Academician L.D. Shevyakov for young scientists of the Ural Branch of the Russian Academy of Sciences for the monograph "Lithobiomicrofacies of Upper Devonian carbonate rocks of the Middle and Southern Urals" in 2003, was awarded the medal of the Russian Academy of Sciences for young scientists of the Russian Academy of Sciences in the field of Earth Sciences in 2003.
Vladimir Sergeevich Ponomarev is a laureate of the Sverdlovsk Region Governor's for young scientists in 2011 in the nomination "for the best work in the field of Earth Sciences" for a series of publications on the topic: "Material composition of rocks from the basement of the Ural part of the West Siberian megabasin and prospects for their oil content."
Kirill Svyatoslavich Ivanov was awarded the medal named after Academician A.N. Zavaritsky in 2017 for a series of works in the field of Ural geology. He was also awarded the medal "For Labor Distinction".
In 2019, Viktor Nikolaevich Puchkov was awarded the medal named after Academician A.N. Zavaritsky.
In 2019, Oleg Konstantinovich Ivanov became a laureate of the honorary silver medal named after Corresponding Member S.N. Ivanov "For outstanding results in the field of Earth sciences and dignity".
In 2021, the Ministry of Science and Higher Education of the Russian Federation awarded Viktor Nikolaevich Puchkov with a departmental medal "For contribution to the implementation of state policy in the field of education and scientific and technological development".
In 2022, Nikolai Pavlovich Kostrov became a laureate of the honorary silver medal named after Corresponding Member S.N. Ivanov "For outstanding results in the field of Earth sciences and dignity". The medal was awarded for the development and implementation of a new method for interpreting potential fields for geology and a series of works on the deep structure of the West Siberian Plate and the Urals.
In 2023, the Presidium of the Ural Branch of the Russian Academy of Sciences awarded Viktor Nikolaevich Puchkov with the title of "Honorary Veteran of the Ural Branch of the Russian Academy of Sciences" with a breast badge: "For achieved labor successes and many years of fruitful work"
In 2023, Viktor Nikolaevich Puchkov was awarded the Peter the Great Medal from the Presidium of the International Academy of Sciences and Arts
In 2023, Kirill Svyatoslavich Ivanov and Nikolai Pavlovich Kostrov were awarded the honorary breast badge of the USMU "Founder of the Ural Geophysical School P.K. Sobolevsky" for their research into the deep structure of the West Siberian Plate
In 2024, Viktor Nikolaevich Puchkov was awarded the medal "300 years of the Russian Academy of Sciences" from the Presidium of the Russian Academy of Sciences.