Abstract
The Tien-Shan orogene is a region in which the earth’s crust undergoes considerable thickening and tangential compression. Under these conditions the lithosphere heterogeneities (composition, rheological) create the prerequisites for the development of various phenomena of tectonic layering (lateral shearing, different deformation of layers). To study the distribution of velocity, density and other elastic parameters, the results from a seismic tomography study on P-wave as well as S-wave velocities were used. Using empirical as well as theoretical formulas on the relationship between velocity, density and silica content in rocks, their distribution in the Tien-Shan’s lithosphere has been calculated. In addition, other elastic parameters, such as Young’s modulus, shear modulus, Poisson’s ratio and coefficient of general compressions have been determined. Zoning of different types of crust was carried out for the region investigated. The characteristics of the “crust-mantle” transition have been investigated. Large blocks with different types of the earth’s crust were distinguished. Layers with inverse values of velocity, density and shear and Young modulus are revealed in the Tien-Shan lithosphere. All of the above described features open new ways to solve geodynamics problems.
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References
Bakirov, A. B., Lesik, O. M., Lobanchenko, A. N., and Sabitova, T. M. (1996), Indication of Modem Magmatism in Tien-Shan, Geologia Geofiz., Novosibirsk 37(12), 42–53 (in Russian).
Chedia, O. K., Morphostructures and Recent Tectogenesis of Tien-Shan (Ilim, Frunze 1986).
Classification and Nomenclature of the Magmatic Rocks (eds. Bogatikov, O. A. et al.) (Moscow 1981).
Deep Structure of Low Seismic Activity Regions of USSR (ed. Nersesov, I. L.) (Nauka, Moscow 1987).
Fadeev, V. E. (1993), Non-Linear Phenomena and its Role in Geotectonics, Geotectonics 1, 7–12 (in Russian).
Handbook of Physical Constants (ed. Clark, C.) (Yale Univ., New Haven, Connecticut 1966).
Hyndman, D. W., Petrology of Igneous and Metamorphic Rocks (McGraw-Hill, Inc. 1972).
Khalevin, N. I., Aleinikov, A. L., Kolupajeva, E. N., Tiunova, A. M., and Yunusov, F. F. (1986), On Joint Use of Longitudinal and Transverse Waves in Deep Seismic Sounding, Geologia Geofiz., Novosibirsk 10, 94–98 (in Russian).
Lesik, O. M., Use of the seismic tomography data for determination rock’s composition and elastic parameters of the Earth’s crust. In Neotectonics and Recent Geodynamics: Continents and Oceans (Theses of XXIX tectonic workshop, Moscow 1996) pp. 79–80.
Pushcharovsky, Yu. M. (1993), Non-linear Geodynamics (author’s credo), Geotectonics 1, 3–7.
Physical Properties of the Rocks and Minerals (Petrophysics) (ed. Dortman, N. B.) (Nedra, Moscow 1984).
Roecker, S. W., Sabitova, T. M., Vinnik, L. P., Burmakov, Y. A., Golovanov, M. I., Mamatkanova, R., and Munirova, L. (1993), Three-dimensional Elastic Wave Structure of the Western and Central Tien-Shan, J. Geophys. Res. 98, 15779–15795.
Sabitova, T. M., Lesik, O. M., Adamova, A. A., and Mamatkanova, R., Seismotomography model of Tien-Shan Earth crust in connection with seismicity, European Geophysical Society (Katlenburg-Lindau, Germany 1995), Annales Geophys. Part 1, p. 55.
Yudakhin, F. N., Geophysical Fields, Deep Structure and Seismicity of the Tien-Shan (Ilim, Frunze 1983).
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Sabitova, T.M., Lesik, O.M., Adamova, A.A. (1998). Velocity and Density Heterogeneities of the Tien-Shan Lithosphere. In: Plomerová, J., Liebermann, R.C., Babuška, V. (eds) Geodynamics of Lithosphere & Earth’s Mantle. Pageoph Topical Volumes. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-8777-9_17
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DOI: https://doi.org/10.1007/978-3-0348-8777-9_17
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