Solodovnikov D.A., Khavanskaya N.M., Vishnyakov N.V., Shinkarenko S.S. Modern Tectonic Activity of Alexandrovsky Graben (Lower Volga) on the Re-Levelling Data
DOI: https://doi.org/10.15688/jvolsu11.2017.4.9
Denis A. Solodovnikov
Candidate of Geographical Sciences, Head of Department of Geography and Cartography, Volgograd State University,
Prospekt Universitetskij, 100, 400062 Volgograd, Russian
Federation,
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,
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Natalya M. Khavanskaya
Candidate of Geographical Sciences, Associate Professor, Department
of Geography and Cartography, Volgograd State University,
Prospekt Universitetskij, 100, 400062 Volgograd, Russian Federation,
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Nikolay V. Vishnyakov
Assistant Professor, Department of Geography and Cartography, Volgograd State University,
Prospekt Universitetskij, 100, 400062 Volgograd, Russian Federation,
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Stanislav S. Shinkarenko
Candidate of Agricultural Sciences, Researcher in FSC of agroecology
RAS,
Prospekt Universitetskij, 97, 400062 Volgograd, Russian Federation; Associate Professor of Department of Geography and Cartography, Volgograd State University,
Abstract. The article presents the results of the current tectonic mobility analysis of the Alexandrovsky
graben – widely known tectonic structure in the Lower Volga region. This graben is one of the strongest occurrence
of fault tectonics on the Russian Plain. Like other dislocations, it is laid on the contact of two major tectonic
elements of the East European platform – the Pachelmsko-Saratov aulacogen and the Caspian syneclise. When the
Volgograd Hydroelectric Power Station (1950s) was designed, the faults systems of the Lower Volga region were
studied in details to identify the presence of modern movements. During that period, passivity of faults was
ascertained. In the middle of the 2000s, the authors identified geomorphological features of active modern tectonic
movements in the Alexandrovsky graben area. In 2009, a reference geodetic network was laid to perform long-term
monitoring and to determine the rates of tectonic movements and a primary levelling and elevation alignment of
reference points were carried out. The depth and method of referent points laying exclude the influence of seasonal
soil processes on the high-altitude position of the geodetic base points. Re-levelling was conducted in 2016-2017.
The results of the double levelling match the III (third) class. The results of levelling allow us to estimate the
average velocity of vertical displacement in 0,6-1,1 mm / year. Such speeds are almost limitless for platform sections
of the earth’s crust. In different parts of the graben, both upward and downward movements were detected. The
obtained results indicate the presence of complex and multidirectional modern movements in a limited area of the
Aleksandrovsky graben.Key words: Modern tectonic movements, Alexandrovsky Graben, Lower Volga region, geodetic methods.
Произведение « Modern Tectonic Activity of Alexandrovsky Graben (Lower Volga) on the Re-Levelling Data» созданное автором по имени Solodovnikov D.A., Khavanskaya N.M., Vishnyakov N.V., Shinkarenko S.S., публикуется на условиях лицензии Creative Commons С указанием авторства 4.0 Всемирная.
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