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  1. No Access

    Article

    Age Limits for the Zaonega Formation of the Ludicovian Superhorizon and the Shunga Event in the Onega Basin: New U–Pb Zircon Data for the Konchezero Sill

    New U–Pb data for zircon from the Konchezero sill reliably determine the age of the Suisari Formation of the Ludicovian and the limit of the maximum age of the volcanogenic–sedimentary Zaonega Formation with i...

    A. V. Stepanova, Corresponding Member of the RAS A. V. Samsonov… in Doklady Earth Sciences (2024)

  2. No Access

    Article

    Rifting in the Paleoproterozoic Onega Basin: Geochemistry of Volcano–Sedimentary Rocks of the Zaonega Formation

    The study of the volcano–sedimentary sequence in the lower part of the Zaonega formation in the Paleoproterozoic Onega structure (Karelian craton, Fennoscandian Shield) has shown that tuffaceous and high-silic...

    Corresponding Member of the RAS A. V. Samsonov, A. V. Stepanova… in Doklady Earth Sciences (2024)

  3. No Access

    Article

    Geodynamics of a Breakup of Western Part of the Karelian Craton: Data on 2.1 Ga Mafic Magmatism

    Mafic intraplate magmatism is the main source of information about the geodynamics of processes that lead to the breakup of continental blocks. The article discusses geodynamics of the breakup of the Archean s...

    A. V. Samsonov, A. V. Stepanova, E. B. Salnikova, Yu. O. Larionova… in Petrology (2023)

  4. No Access

    Article

    Joint Fit of Long-Baseline Accelerator Neutrino Experiments in GNA Software

    Long-baseline accelerator neutrino experiments are develo** their neutrino data analysis in order to define the charge-parity phase

    A. V. Stepanova, L. D. Kolupaeva in Physics of Particles and Nuclei Letters (2023)

  5. No Access

    Article

    Arkose Sandstones of the Kebekta Group of the Ugui Graben (Aldan Shield): Age, Provenance, and Deposition Setting

    The results of U–Pb (ID-TIMS) and U–Th–Pb (LA-ICP-MS) geochronological studies of baddeleyite from dolerite dikes of the Sulumat Complex and detrital zircon from red arkose sandstones of the Kebekta Group of t...

    V. P. Kovach, Corresponding Member of the RAS A. V. Samsonov… in Doklady Earth Sciences (2023)

  6. No Access

    Article

    The Great Dyke of the Kola Peninsula as a Marker of an Archean Cratonization in the Northern Fennoscandian Shield

    The results of geochronological and petrological studies of the largest mafic dyke in the northern part of the Fennoscandian Shield, called the Great Dyke of the Kola Peninsula (GDK), are presented. According ...

    A. V. Stepanova, A. V. Samsonov, E. B. Salnikova, S. V. Egorova… in Petrology (2022)

  7. No Access

    Article

    А History of Coronitic Metagabbronorites in the Belomorian Province, Fennoscandian Shield: U-Pb (CA-ID-TIMS) Dating of Zircon–Baddeleyite Aggregates

    The estimation of crystallization and metamorphic reworking ages of mafic rocks in the polycyclic Precambrian areas is a difficult problem. Magmatic baddeleyite can be partially or completely replaced by polyc...

    E. B. Salnikova, A. V. Stepanova, P. Ya. Azimov, M. A. Sukhanova, A. B. Kotov… in Petrology (2022)

  8. No Access

    Article

    Paleoproterozoic (2.51–2.40 Ga) Igneous Provinces of the Northeastern Fennoscandia: Geochemistry of Volcanic Rocks and Correlation with Intrusive Complexes

    The results of geochemical studies of Paleoproterozoic volcanic rocks in the structure of the Polmak–Pechenga–Imandra–Varzuga belt of the northeastern part of the Fennoscandian Shield are presented. Taking int...

    A. A. Arzamastsev, S. V. Egorova, K. G. Erofeeva… in Stratigraphy and Geological Correlation (2020)

  9. No Access

    Article

    Mafic Intrusions of ca. 2400 Ма Large Igneous Province in the Belomorian Mobile Belt: First Baddeleyite U–Pb ID-TIMS Data

    U–Pb ID-TIMS dating of igneous baddeleyite from metamorphosed coronitic gabbronorites in the сentral part of the Belomorian mobile belt, Fennoscandian shield was performed for the first time. The obtained age ...

    A. V. Stepanova, E. B. Salnikova… in Doklady Earth Sciences (2020)

  10. No Access

    Article

    Olivine and Clinopyroxene Phenocrysts as a Proxy for the Origin and Crustal Evolution of Primary Mantle Melts: a Case Study of 2.40 Ga Mafic Sills in the Kola–Norwegian Terrane, Northern Fennoscandia

    New petrographic, geochemical, and isotopic (Sr, Nd, and δ18О) data on olivine and pyroxene phenocrysts provide constraints on the composition and crustal evolution of primary melts of Paleoproterozoic (2.40 Ga) ...

    K. G. Erofeeva, A. V. Samsonov, A. V. Stepanova, Yu. O. Larionova… in Petrology (2020)

  11. No Access

    Article

    Fragments of Paleoproterozoic Large Igneous Provinces in Northern Fennoscandia: Baddeleyite U–Pb Age Data for Mafic Dykes and Sills

    New data on the age of dolerite dikes in the NE part of the Kola province of the Fennoscandinavian shield and the picrodolerite sills that cut the dikes are presented. The results of U–Pb ID-TIMS baddeleyite d...

    E. B. Salnikova, Corresponding Member of the RAS A. V. Samsonov… in Doklady Earth Sciences (2020)

  12. No Access

    Article

    1860-Ma I-Shaped Mafic Sills in the Murmansk Craton, Eastern Fennoscandia: Petrology and Tectonic Setting of Within-plate Mafic Events during Nuna Assembly

    1860-Ma within-plate mafic rocks of the Eastern Murman Sill Province were studied in the northern part of the Murmansk Craton, where they compose sheet bodies (sills) up to 100 m thick in Archean granitoids an...

    A. V. Stepanova, A. V. Samsonov, Yu. O. Larionova, S. V. Egorova… in Petrology (2020)

  13. No Access

    Article

    Mafic Magmatism of Northeastern Fennoscandia (2.06–1.86 Ga): Geochemistry of Volcanic Rocks and Correlation with Dike Complexes

    The comprehensive geochemical and isotopic-geochronological study of Early Proterozoic volcanic rocks in structure of the Polmak–Pechenga–Imandra–Varzuga belt and dikes and sills of the Murmansk and Kola–Norwe...

    A. A. Arzamastsev, A. V. Stepanova… in Stratigraphy and Geological Correlation (2020)

  14. No Access

    Article

    Dominant Effect of Full-Length Presenilin-1 on the Enhancement of Store-Operated Calcium Entry

    Familial Alzheimer’s disease is a severe neurodegenerative disorder. Mutations in the presenilin-1 (PS1) gene account for most familial Alzheimer’s disease cases. Normally, PS1 is cleaved to 2 terminal fragmen...

    K. V. Skobeleva, M. A. Ryazantseva… in Biochemistry (Moscow), Supplement Series A… (2019)

  15. No Access

    Article

    Ab initio molecular force fields fitted in Cartesian coordinates to experimental frequencies of isotopic species using symmetry constraints: application to indole and pyrrole molecules

    We present the new computational procedure for the fitting ab initio molecular force fields represented in Cartesian coordinates to the experimental frequencies with inclusion data for isotopic species and sym...

    I. V. Kochikov, A. V. Stepanova, G. M. Kuramshina in Structural Chemistry (2019)

  16. No Access

    Article

    2.4 Ga Mafic Dikes and Sills of Northern Fennoscandia: Petrology and Crustal Evolution

    New petrographic, geochemical, and Sm-Nd isotopic data provide constraints on the petrogenesis of ca. 2400 Ma gabbronorite, picrodolerite and dolerite mafic sills and dikes in the Liinakhamari and Sorvaranger ...

    K. G. Erofeeva, A. V. Stepanova, A. V. Samsonov, Yu. O. Larionova… in Petrology (2019)

  17. No Access

    Article

    Peculiarities of the Mechanism of Interactions of Catalytic Antibodies with Organophosphorus Substrates

    Catalytic antibodies are a promising model for creating highly specific biocatalysts with predetermined activity. However, in order to realize the directed change or improve their properties, it is necessary t...

    Yu. A. Mokrushina, S. O. Pipiya, A. V. Stepanova, O. G. Shamborant… in Molecular Biology (2017)

  18. No Access

    Article

    2.5 Ga gabbro-anorthosites in the Belomorian Province, Fennoscandian Shield: Petrology and tectonic setting

    The Vorochistoozersky, Nizhnepopovsky, and Severo-Pezhostrovsky gabbro-anorthosite massifs have been studied in the central part of the Belomorian Province, Fennoscandian Shield. The similarity of geological s...

    A. V. Stepanova, V. S. Stepanov, A. N. Larionov, P. Ya. Azimov, S. V. Egorova… in Petrology (2017)

  19. No Access

    Article

    Heterogeneous basement reworking during Paleoproterozoic collisional orogeny within the Belomorian province, Fennoscandian Shield

    The distribution of cross-cutting and pseudoconcordant contacts of Paleoproterozoic metagabbro and their Archean host rocks were studied in the central part of the Belomorian province of the Fennoscandian Shie...

    I. I. Babarina, A. V. Stepanova, P. Ya. Azimov, N. S. Serebryakov in Geotectonics (2017)

  20. No Access

    Article

    Evolution of catalytic centers of antibodies by virtual screening of broad repertoire of mutants using supercomputer

    It is proposed to perform quantum mechanical/molecular dynamics calculations of chemical reactions that are planned to be catalyzed by antibodies and then conduct a virtual screening of the library of potentia...

    A. V. Golovin, I. V. Smirnov, A. V. Stepanova… in Doklady Biochemistry and Biophysics (2017)

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