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VISUALISATION OF THE FOLDS AND THRUST STRUCTURE OF METAMORPHIC COMPLEXES IN THE COVER-BASEMENT SYSTEM USING THE AMTS METHOD (BASED ON THE EXAMPLE OF THE MEYER ZONE OF LADOGA REGION)
1 Lomonosov Moscow State University
2 Schmidt Institute of Physics of the Earth, Russian Academy of Sciences
3 Geoelectromagnetic Research Center, IFE RAS
4 Geological Institute of the Russian Academy of Sciences
Journal: Geophysical research
Tome: 24
Number: 4
Year: 2023
Pages: 58-80
UDK: 550.370; 550.379; 550.389.1;551.242; 551.243
DOI: 10.21455/gr2023.4-4
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Kulikov
Yu.A V.A. VISUALISATION OF THE FOLDS AND THRUST STRUCTURE OF METAMORPHIC COMPLEXES IN THE COVER-BASEMENT SYSTEM USING THE AMTS METHOD (BASED ON THE EXAMPLE OF THE MEYER ZONE OF LADOGA REGION)
// . 2023. Т. 24. № 4. С. 58-80. DOI: 10.21455/gr2023.4-4
@article{Kulikov
Yu.AVISUALISATION2023,
author = "Kulikov
Yu.A, V. A.",
title = "VISUALISATION OF THE FOLDS AND THRUST STRUCTURE OF METAMORPHIC COMPLEXES IN THE COVER-BASEMENT SYSTEM USING THE AMTS METHOD (BASED ON THE EXAMPLE OF THE MEYER ZONE OF LADOGA REGION)
",
journal = "Geophysical research",
year = 2023,
volume = "24",
number = "4",
pages = "58-80",
doi = "10.21455/gr2023.4-4",
language = "English"
}
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Keywords: audio-magnetotelluric sounding, magnetic survey, geoelectric model, electrical resistivity, two-dimensional inver-sion, basement–cover system, skin tectonics.
Аnnotation: The article presents the methodology and results of electromagnetic soundings of the Meyer thrust zone of Northern Ladoga region, which separates volcano-terrigenous Paleoproterozoic cover complexes of different metamorphism intensity.
Obtained in the course of detailed geological mapping ideas about the structural and material features of the studied fold-thrust forms of this zone were supplemented by depth characteristics and visualization of the latter in the “Paleoproterozoic cover–Archean basement” system.
Thanks to the adequate choice of the audio-magnetotelluric sounding method as a basic one in combi-nation with magnetic survey, meaningful geoelectric images of the fold-thrust structures down to a depth of 1 km were identified. Elements of both “thick-skinned” and “thin-skinned” tectonics, with joint and autonomous deformations of basement and cover complexes, were traced in the constructed electrical conductivity sections. A new dome-shaped structure of the Archean basement, inscribed in the linear series of small protrusions of the Archean basement of the Sortavala Group, was distinguished.
Bibliography: Baltybaev Sh.K., Glebovitskii V.A., Kozyreva I.V., Shul'diner V.I., Meyeri thrust as a main structure of the suture between Karelian craton and Svecofennian belt in the Ladoga region, Baltic Shield, Doklady
Akademii nauk (Reports of the Russian Academy of Sciences), 1996, vol. 348, no. 3, pp. 353-356. [In Russian].
Epishkin D.V., Development of methods for processing magnetotelluric sounding data, Vestnik Moskovskogo Universiteta. Seriya 4. Geologiya (Bulletin of Moscow University. Series 4. Geology), 2016, no. 4, pp. 40-46. [In Russian].
Gamble T.D., Goubau W.M., Clarke J., Magnetotellurics with a remote magnetic reference, Geophysics, 1979, vol. 44, no. 1, pp. 53-68.
Korsman K., Niemela R., Wasenius P., Multistage evolution of the Proterozoic crust in the Savo schist belt, east-ern Finland, Bulletin - Geological survey of Finland, Helsinki, Geologinen tutkimuslaitos, 1988, no. 343, pp. 89-96.
Kulikov V.A., Ionicheva A.P., Kolodyazhny S.Yu., Sokolova E.Yu., Pushkarev P.Yu., Yakovlev A.G., A Geoelec-trical Model of the Southern Ladoga Region on the Basis of 3D Magnetotelluric Data Inversion, Izvestiya, Physics of the Solid Earth, 2022, vol. 58, no. 5, pp. 642–654.
Ladozhskaja proterozojskaja struktura (geologija, glubinnoe stroenie i mineragenija) (Ladoga Proterozoic structure (geology, deep structure and minerageny)), Petrozavodsk, Karelian Scientific Center of the Rus-sian Academy of Sciences, 2020, 435 p. [In Russian].
Matrenichev V.A., Stepanov K.I., Pupkov O.M., Stratigraphy and features of the material composition of the Early Proterozoic volcanic rocks of the Sortavala uplift (Northern Ladoga region), Vestnik Sankt-Peterburgskogo gosudarstvennogo universiteta (Bulletin of St. Petersburg State University), 2004, no. 2, pp. 31-44. [In Russian].
Morozov Yu.A., Matveev M.A., Romanyuk T.V., Smulskaya A.I., Terekhov E.N., Bayanova T.B., U–Pb Dating of the Sill-Like (Plated) Bodies of the Early Kinematic Series of Gabbrodiorite–Granodiorites in the Sveco-fennian Fold-and-Thrust Assemblage of the Ladoga Region, Doklady Earth Sciences, 2022, vol. 507, pp. 862-870. https://doi.org/10.1134/S1028334X2270043X
Ob"yasnitel'naya zapiska. Gosudarstvennaja geologicheskaja karta Rossijskoj Federacii masshtaba 1:200 000. Izdanie vtoroe. Karel'skaja serija. Listy P-35-XXIV, P-36-XIX (Explanatory note. State Geological Map of the Russian Federation scale 1:200 000. Second edition. Karelian series. Sheets P-35-XXIV, P-36-XIX), Saint Petersburg, VSEGEI, 2004, 230 p. [In Russian].
Pfiffner O.A., Thick-Skinned and Thin-Skinned Tectonics: A Global Perspective, Geosciences, 2017, vol. 7, no. 3, 71 p. https://doi.org/10.3390/geosciences7030071
Sokolova E.Yu., Golubtsova N.S., Kovtun A.A., Kulikov V.A., Lozovsky I.N., Pushkarev P.Yu., Rokityansky I.I., Taran Ya.V., Yakovlev A.G., Results of synchronous magnetotelluric and magnetovariational soundings in the area of the Ladoga electrical conductivity anomaly, Geofizika (Geophysics), 2016, no. 1, pp. 48-61. [In Russian].
Sudovikov N.G., Glebovitskii V.A., Sergeev A.S., Petrov V.P., Kharitonov A.L., Geologicheskoe razvitie glubin-nyh zon podvizhnyh pojasov (Severnoe Priladozh'e) (Geological development of deep zones of mobile belts (Northern Ladoga region)), Leningrad, Nauka, 1970, 227 p. [In Russian].
Akademii nauk (Reports of the Russian Academy of Sciences), 1996, vol. 348, no. 3, pp. 353-356. [In Russian].
Epishkin D.V., Development of methods for processing magnetotelluric sounding data, Vestnik Moskovskogo Universiteta. Seriya 4. Geologiya (Bulletin of Moscow University. Series 4. Geology), 2016, no. 4, pp. 40-46. [In Russian].
Gamble T.D., Goubau W.M., Clarke J., Magnetotellurics with a remote magnetic reference, Geophysics, 1979, vol. 44, no. 1, pp. 53-68.
Korsman K., Niemela R., Wasenius P., Multistage evolution of the Proterozoic crust in the Savo schist belt, east-ern Finland, Bulletin - Geological survey of Finland, Helsinki, Geologinen tutkimuslaitos, 1988, no. 343, pp. 89-96.
Kulikov V.A., Ionicheva A.P., Kolodyazhny S.Yu., Sokolova E.Yu., Pushkarev P.Yu., Yakovlev A.G., A Geoelec-trical Model of the Southern Ladoga Region on the Basis of 3D Magnetotelluric Data Inversion, Izvestiya, Physics of the Solid Earth, 2022, vol. 58, no. 5, pp. 642–654.
Ladozhskaja proterozojskaja struktura (geologija, glubinnoe stroenie i mineragenija) (Ladoga Proterozoic structure (geology, deep structure and minerageny)), Petrozavodsk, Karelian Scientific Center of the Rus-sian Academy of Sciences, 2020, 435 p. [In Russian].
Matrenichev V.A., Stepanov K.I., Pupkov O.M., Stratigraphy and features of the material composition of the Early Proterozoic volcanic rocks of the Sortavala uplift (Northern Ladoga region), Vestnik Sankt-Peterburgskogo gosudarstvennogo universiteta (Bulletin of St. Petersburg State University), 2004, no. 2, pp. 31-44. [In Russian].
Morozov Yu.A., Matveev M.A., Romanyuk T.V., Smulskaya A.I., Terekhov E.N., Bayanova T.B., U–Pb Dating of the Sill-Like (Plated) Bodies of the Early Kinematic Series of Gabbrodiorite–Granodiorites in the Sveco-fennian Fold-and-Thrust Assemblage of the Ladoga Region, Doklady Earth Sciences, 2022, vol. 507, pp. 862-870. https://doi.org/10.1134/S1028334X2270043X
Ob"yasnitel'naya zapiska. Gosudarstvennaja geologicheskaja karta Rossijskoj Federacii masshtaba 1:200 000. Izdanie vtoroe. Karel'skaja serija. Listy P-35-XXIV, P-36-XIX (Explanatory note. State Geological Map of the Russian Federation scale 1:200 000. Second edition. Karelian series. Sheets P-35-XXIV, P-36-XIX), Saint Petersburg, VSEGEI, 2004, 230 p. [In Russian].
Pfiffner O.A., Thick-Skinned and Thin-Skinned Tectonics: A Global Perspective, Geosciences, 2017, vol. 7, no. 3, 71 p. https://doi.org/10.3390/geosciences7030071
Sokolova E.Yu., Golubtsova N.S., Kovtun A.A., Kulikov V.A., Lozovsky I.N., Pushkarev P.Yu., Rokityansky I.I., Taran Ya.V., Yakovlev A.G., Results of synchronous magnetotelluric and magnetovariational soundings in the area of the Ladoga electrical conductivity anomaly, Geofizika (Geophysics), 2016, no. 1, pp. 48-61. [In Russian].
Sudovikov N.G., Glebovitskii V.A., Sergeev A.S., Petrov V.P., Kharitonov A.L., Geologicheskoe razvitie glubin-nyh zon podvizhnyh pojasov (Severnoe Priladozh'e) (Geological development of deep zones of mobile belts (Northern Ladoga region)), Leningrad, Nauka, 1970, 227 p. [In Russian].
