On the impact nature of the Ilyinets annular structure according to gravity gradients
DOI:
https://doi.org/10.15407/dopovidi2022.02.067Keywords:
impact, gravity, horizontal gradient, modeling, gravity transformantsAbstract
The materials of the geological structure and geophysical study of the Ilyinets annular structure on the southwestern slope of the Ukrainian Shield are generalized and supplemented. The structure of the central part of the crater is modeled according to the data of the joint analysis of 2D and 3D models of the gravity field and its transformants — modules of the gravity horizontal gradient. Because of modeling, the periodic wavy nature of the destruction of the host rocks in the center of the structure was revealed. According to the analytical continuation of the observed gravity field upward on 1 km above the center of the crater the destruction front is delineated. These results can be interpreted in favor of the additional confirmation of the impact hypothesis regarding the genesis of the Ilyinets structure. From the standpoint of the wave process, the approximate parameters of the impact event are estimated — the mass of the meteoroid, the depth of penetration, and the energy of the explosion. These estimates deviate by more than 5 % from the data known from the literature. Estimate 2. 57 · 1025 erg is intended for the energy range for medium-scale impact events.
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Vid’machenko, A. P. & Morozhenko, O. V. (2006). Space investigations and physics of the Solar system bodies. Naukovi visti NTUU “KPI”, No. 6, pp. 71-81.
McGetchin, T. R., Settle, M. & Head, J. W. (1973). Radial thickness variation in impact crater ejecta: implications for lunar basin deposits. Earth Planet. Sci. Lett., 20, pp. 226-236. https: //doi. org/10. 1016/0012-821X(73)90162-3
Vidmachenko, A. P. & Morozhenko, O. V. (2013). Comparative planetology: Textbook. Kyiv: Dia. Ltd. (in Ukrainian).
Gottwald, M., Kenkmann, Th. & Reimold, W. U. (2020). Terrestrial impact structures. The TanDEM-X Atlas. Part 1 and 2. Munich: Verlag Dr. Friedrich Pfeil.
Valter, А. А. (1999, September-October). Astroblemes of Ukrainian Shield. Proceedings of the International Confe rence Modern problems of comets, asteroids, meteors, meteorites, astroblems and craters. Vinnitsa (in Russian).
Mikhailova, N. P., Gintov, O. B., Karzanova, A. Y. & Krvchenko, S. M. (1978). On the nature of Ilyinets annular structure in in light of paleomagnetic data. Geol. J., 38, No. 5, pp. 51-58 (in Russian)
Nikolskii, А. P. (1975). Explosive meteorite craters of Ukrainian Shield near Vinnitsa city. Geol. J., 35, No. 4, pp. 76-86 (in Russian)
Valter, А. А. & Ryabenko, V. А. (1976). Ilyinets structure is explosive meteorite crater. Geol. J., 36, No. 1, pp. 42-49 (in Russian).
Gintov, О. B., Shevchenko, Т. P. & Golub, V. N. (1975). Оn endogenous nature of Ilyinets structure. Geol. J., 35, No. 1, pp. 54-60 (in Russian).
Gurov, Е. P. & Gurova, Е. P. (1991). Geological structure and material composition of rocks of impact structures. Kyiv: Naukova Dumka (in Russian).
Еntin, V. А., Оrliuk, М. I., Guskov, S. I., Fedorov, А. V., Pavliuk, V. N. & Drukarenko, V. V. (2013). Geophysical aspects of structure and genesis of Ilyinets structure: impact or volcano? Geophys. J., 35, No. 1, pp. 100-112 (in Russian).
Dubovenko, Y. I., Chorna, O. A. & Kuzminets, M. P. (2020, May). Modeling of the potential fields transformants for the ring structure Illinetska. Proceedings of the 19th Internationl Conference Geoinformatics: theoretical and applied aspects. (18450). Kyiv. https: //doi. org/10. 3997/2214-4609. 2020geo062
Yakimchuk, N. А. & Korchagin, I. N. (2020, September). On the possibility of using mobile direct search methods to search for accumulations of industrial micro-diamonds (lonsdaleites). Proceedings of the XXII All-Russian with International Participation Scientific and Practical Shchukin Conference Structure, material composition, properties, modern geodynamics and seismicity of platform territories and adjacent regions (pp. 390-395). Voronezh: Ed. house of Voronezh State University (in Russian).
Nalysko, М. М. (2019). Development of scientific bases for improving safety in long structures during the propagation of shock air waves: (Unpublished Doctor thesis). Prydniprovska State Academy of Civil Engineering & Architecture. Dnipro (in Ukrainian).
Klimi, G. & Greenstein, J. (2011, November). Estimation of destructive power of meteorites and meteors. City Tech 8th Annual Poster Session. https: //www. researchgate. net/publication/304784315_Estimation_ of_Destructive_Power_of_Meteorites_and_Meteors
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