Abstract
We performed a study of the anomalous magnetic field features of the Nether-Polar and Polar sectors of the Urals (48–72° E and 60–68° N). We identified and mapped magnetic anomalies due to the Earth’s crust layers. The calculated local magnetic anomalies map allows allocating basic-ultrabasic massifs in the upper parts of the basement within the sedimentary basins. After regional magnetic anomalies interpretation and deep seismic sounding data along profiles, located in the study area we build an Earth’s crust structure model. Comparison of the deep structure of the cross-sections produced by independent interpretation methods using seismic and magnetic data has enabled us to extract two layers with different magnetic properties from the consolidated crust. Top layer of the Earth’s crust does not make a significant contribution into regional magnetic field and is characterized by a low magnetization (less than 0.3 A/m). Within this layer we identified magnetized local sources. The lower layer has greater crustal magnetization. The magnetic data interpretation shows that the crust’s basalt layer magnetization value is 3–4 A/m. The average depth to the top surface of the layer is 18–20 km. The resulting parameters were used for three-dimensional modeling. We considered a model with uniform magnetization directed along the modern geomagnetic field. Thus, we built the upper surface of the magnetized layer, which allowed clarifying mafic layer in the space between the deep seismic sounding profiles. We found that at the Northern, Circumpolar and Polar Urals basalt layer plunged to a considerable depth of 26–30 km.
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References
Byzov D., Muravyev L. and Fedorova N. (2016). The Approximation of Anomalous Magnetic Field by Array of Magnetized Rods. AIP Conference Proceedings 1863(1):560051. https://doi.org/10.1063/1.4992734.
Fedorova N.V., Kolmogorova V.V. (2013). Models of distribution of the magnetization and the longitudinal wave velocity of the Earth’s crust in Timan-Pechora and Northern Ural regions. Lithosphere (5), 160–169 (in Russian).
Fedorova N.V., Kolmogorova V.V., Roublev A.L., Tsidaev A.G. (2013). The magnetic model of the North-Eastern region of Europe. Geophysical Research, 14 (2), 25 – 37 (in Russian).
Fedorova N.V., Martyshko P.S., Gemaidinov D.V., Rublev A.L. (2015). Computer technology for highlighting the magnetic anomalies from the deep layers of the Earth’s crust. XIVth International Conference – Geoinformatics: Theoretical and Applied Aspects. 11‐14 May 2015, Kiev, Ukraine. https://doi.org/10.3997/2214-4609.201412426.
Fedorova N.V., Muravyev L.A., Kolmogorova V.V. (2017a) Statistical estimates of the relationship of regional magnetic anomalies with the seismic boundaries of the Urals region nether polar sector. Ural’skij geofizicesij vestnik (1), 47–51. (in Russian).
Fedorova N.V., Rublev A.L. (2016). Ultramafic-mafic massif mapping in the upper horizons of the basement polar sector of Eurasia. 16th International Multidisciplinary Scientific GeoConference SGEM 2016, Conference Proceedings, June 28 - July 6, 2016, Book1 Vol. 3, 703–710 https://doi.org/10.5593/sgem2016/b13/s05.089.
Fedorova N.V., Rublev A.L., Muravyev L.A., Kolmogorova V.V. (2017b). Magnetic anomalies and model of the magnetization in the Earth’s crust of circumpolar and polar the sectors of Ural region. Geofizicheskiy zhurnal, 39(1). 111–122. https://doi.org/10.24028/gzh.0203-3100.v39i1.2017.94014.
Ladovskiy I.V., Martyshko P.S., Fedorova N.V., Kolmogorova V.V. (2016) XP constructing three-dimensional density-velocity model on velocity sections DSS. Ural’skij geofizicesij vestnik (2), 108–119 (in Russian).
Martyshko P.S., Fedorova N.V., Akimova E.N., Gemaidinov D.V. (2014). Studying the Structural Features of the Lithospheric Magnetic and Gravity Fields with the Use of Parallel Algorithms Izvestiya. Physics of the Solid Earth, 50 (4), 508–513. https://doi.org/10.1134/s1069351314040090.
Martyshko P.S., Fedorova N.V., Gemaidinov D.V. (2012). Study of the anomalous magnetic field structure in the Ural region using parallel algorithms. Doklady Earth Sciences, 446 (1), 1102–1104. https://doi.org/10.1134/s1028334x12090127.
Martyshko P.S., Ladovsky I.V., Fedorova N.V., Tsidaev A.G., Byzov D.D. (2016) Theory and methods of complex interpretation of geophysical data. Ekaterinburg, 94 p.
Martyshko P.S., Prutkin I.L. (2003). Technology for separating the gravity sources by the depth, Geofizicheskiy zhurnal, 25 (3), 159–168 (in Russian).
Martyshko P.S., Rublev A.L., Pyankov V.A. (2010). Using local corrections technique to solve structural magnetometry problems. Geophysics (4), 3–8 (in Russian).
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Fedorova, N., Muravyev, L., Roublev, A. (2019). Earth’s Crust Magnetization Model of the Nether-Polar and Polar Urals. In: Nurgaliev, D., Khairullina, N. (eds) Practical and Theoretical Aspects of Geological Interpretation of Gravitational, Magnetic and Electric Fields. Springer Proceedings in Earth and Environmental Sciences. Springer, Cham. https://doi.org/10.1007/978-3-319-97670-9_20
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