Seismic visualization of plumes and super-deep fluids in mantle under Ukraine
According to the Taylor approximation of the three-dimensional P-velocity model of the mantle under Eurasia, a seismic visualization of the manifestation of mantle plumes and super-deep fluid processes was carried out. As initial data, the times of the first arrival of the P-wave were used according to the ISC bulletins for the period 1964—2006. The research area is defined in the interval (45—50° N)Ч(23—48° E) to the depth of 2500 km, in the interval (51—55° N)Ч(23—48° E) to the depth of 1700 km according to the used observation system and includes a mantle near Sarmatia (including the territory of Ukraine) and its surroundings. The fluid domain is defined as the region of the yields of low-velocity heterogeneities from the lower, middle mantle to the upper one and spreading along the laterals of their central part. The central, low-velocity part of the fluid domain is defined as a plume. Hence, the fluid domain is an area associated with traces of the passage of plumes.
The mantle under the territory of Ukraine is under the influence of the North-Azov, Volyn-Orsha and Central-Black Sea fluid domains and regions of their spreading. The upper mantle above the central part of the North-Azov fluid domain (to a depth of 525 km) and above the central part of the Volyn-Orsha fluid domain (to a depth of 300 km) is high-velocity one. In the case under consideration, taking into account the absence of manifestations of the outlet of the central region of the fluid domain from the lower mantle and the presence of a high-velocity upper mantle, it can be expected that both of these central regions associated with the manifestation of plumes are in the decay stage. The central regions of both the North-Azov and Volyn-Orsha fluid domains belong to the areas of articulation of tectonic structures. The North Azov fluid domain is confined to the junction of the Khoper megablock of the Voronezh Massif and the Donbas, the Volyn-Orsha to the Kursk megablock of the Voronezh Massif, the Orsha Depression (Volyn-Orsha aulakogen) and the north-western part of the Dneprovo-Donets Basin. In the area of spreading of both the North-Azov and Volyn-Orsha fluid domains, 12 super-deep fluids are emitted.
Full Text:PDF (Русский)
Bogatikov O. A., Kovalenko V. I., Sharkov E. V., 2010. Magmatism. Tectonics. Geodynamics of the Earth. Moscow: Nauka, 607 p. (in Russian).
Bugaenko I. V., Shumlyanskaya L. A., Zaets L. N., Tsvetkova T. A., 2008. Three-dimensional P-velocity model of the mantle of the Black Sea and the adjacent territory. Geofizicheskiy zhurnal 30(5), 145—160 (in Russian).
Geyko V. S., 1997.Taylor approximation of the wave equation and the eikonal equation in inverse seismic problems. Geofizicheskiy zhurnal 19(3), 48—68 (in Russian).
Geyko V. S., Tsvetkova T. A., Shumlyanskaya L. A., Bugaenko I. V., Zaets L. N., 2005. Regional 3-D P-velocity model of the Sarmatian mantle (south-west of the East European platform). Geofizicheskiy zhurnal 27(6), 27—39 (in Russian).
Geyko V. S., Shumlyanskaya L. A., Bugaenko I. V., Zaets L. N., Tsvetkova T. A., 2006. Three-dimensional model of the upper mantle of Ukraine from the times of arrival of P-waves. Geofizicheskiy zhurnal 28(1), 3—16 (in Russian).
Gintov О. B., 2005. Field tectonophysics and its application for the studies of deformations of the Earth’s crust of the Ukraine. Kiev: Feniks, 568 p. (in Russian).
Gintov O. B., Tsvetkova T. A., Bugaenko I. V., Murovskaya A. V., 2016. Some features of the structure of the mantle of the Eastern Mediterranean and their geodynamic interpretation. Geofizicheskiy zhurnal 38(1), 17—29 (in Russian).
Gufeld I. L., 2007. Seismic process. Physico-chemical aspects. Korolev: TsNIIMash Publ., 160 p. (in Russian).
Dobretsov N. L., 2010. Global geodynamic evolution of the Earth and global geodynamic models of the Earth. Geologiya i geofizika 51(6), 761—784 (in Russian).
Dobretsov N. L., Kirdyashkin A. G., Kirdyashkin A. A., 2001. Deep geodynamics. Novosibirsk: Publishing house of the RAS «GEO», 405 p. (in Russian).
Zonenshayn L. P., Kuzmin M. I., 1993. Paleogeodynamics. Moscow: Nauka, 192 p. (in Russian).
Kaban M. K., 2001. Gravitational model of the crust and upper mantle of Northern Eurasia Mantle and isostatic anomalies of gravity. Rossiyskiy zhurnal nauk o Zemle 3(2) (in Russian). http://elpub.wdcb.ru/journals/ rjes/rus/v03/v03con_r.htm#no2.
Lavrentyev M. M., Romanov V. G., Shishatskiy S. P., 1980. Some problems of mathematical physics and analysis. Moscow: Nauka, 286 p. (in Russian).
Letnikov F. A., 1999. Fluid facies of the continental environment and ore formation problems. Smirnovsky collection. Moscow: MSU Publ. House, 63—95 (in Russian).
Orovetskiy Yu. P., 1990. Mantle diapirism. Kiev: Naukova Dumka, 172 p. (in Russian).
Pushcharovskiy Yu. M., Pushcharovskiy D. Yu., 2010. Geology of the Earth’s mantle. Moscow: Geos, 138 p. (in Russian).
Starostenko V. I., Lukin A. E., Tsvetkova T. A., Shumlyanskaya L. A., 2014. Geofluids and the modern manifestation of the activation of the Ingul megablock of the Ukrainian Shield. Geofizicheskiy zhurnal 36(5), 3—25 (in Russian).
Furman V., 2010. Heat transfer and heat diffusion in the plinth of convective Manti plumes. Visnyk Lvivskogo universyteta. Ser. geologichna 24, 35—49 (in Ukrainian).
Khain V. E., 2010. On the basic principles of building a truly global model of the dynamics of the Earth. Geologiya i geofizika 51(6), 753—760 (in Russian).
Khain V. E., 2001. Tectonics of continents and oceans. Moscow: Nauchnyy Mir, 604 p. (in Russian).
Tsvetkova T. A., Bugaenko I. V., 2012. Seismotomography of the mantle under the East European platform: mantle velocity boundaries. Geofizicheskiy zhurnal 34(5), 161—172 (in Russian).
Tsvetkova T. A., Bugaenko I. V., Zaets L. N., 2016. Speed divisibility of the mantle under Ukrainian shield. Geofizicheskiy zhurnal 38(4), 75—87 (in Russian).
Tsvetkova T. A., Bugaenko I. V., Zaets L. N., 2015a. Structure of low-speed regions in the mantle of northern Europe. Trudy Karel’skogo nauchnogo tsentra RAN (7), 106—126 (in Russian).
Tsvetkova T., Bugaenko I., Zaets L., 2015b. Three-dimensional P-velocity model of the mantle of Fennoscandia. Saarbrucken (Deutschland): LAP LAMBERT Academic Publishing, 138 p. (in Russian).
Tsvetkova T. A., Shumlyanskaya L. A., Bugaenko I. V., Zaets L. N., 2010. Seismotomography of the East European and Barents Pechora platforms: a three-dimensional P-velocity model of the mantle near the Volga-Uralia, the Caspian basin and the Barents-Pechora platform. Geofizicheskiy zhurnal 32(5), 35—50 (in Russian).
Shumlyanskaya L. A., 2008. Mantle blocks and areas of increased permeability of the mantle of the Ukrainian shield. Geofizicheskiy zhurnal 30(2), 135—144 (in Russian).
Shumlyanskaya L. A., Zaets L. N., Tsvetkova T. A., 2007. Three-dimensional high-speed structure of the mantle of the territory of Ukraine and oil and gas content. Geofizicheskiy zhurnal 29(1), 122—131 (in Russian).
Shumlyanskaya L. N., Tripolskiy A. A., Tsvetkova T. A., 2014. Influence of cortical velocity structure on the results of seismic tomography of the Ukrainian shield. Geofizicheskiy zhurnal 36(4), 95—117 (in Russian).
Gerver M., Markushevich V., 1966. Determination of a seismic wave velocity from the travel-time curve. Geophys. J. Roy. Astron. Soc. 11, 165—173.
Geyko V. S., 2004. А general theory of the seismic travel-time tomography. Геофиз. журн 26(2), 3—32.
Geotermal atlas of Eorope, 1981. Ed. Hurtig. Potsdam: Hermann Haack Verlavsgesellshaft mbH Gotha.
Nataf H.-C., 2000. Seismic imaging of mantle plumes. Annu. Rev. Earth Planet. Sci. 28, 391—417. doi: 10.1146/annurev.earth.28.1.391.
Shchipansky A., Bogdanova S. V., 1996. The Sarmatian crustal segment: Precambrian correlation between the Voronezh Massif and the Ukrainian Shield across the Dniepr-Donets aulacogen. Tectonophysics 268(1-4), 109—125.