Upper crust structural and morphological ensembles of the Pamir-Tien Shan segment of Central Asia and their reflection in geophysical fields

Authors

  • Анатолий Кузьмич Рыбин Research Station of the Russian Academy of Sciences, Bishkek-city, Bishkek-49, 720049, Kyrgyzstan https://orcid.org/0000-0001-7810-3278
  • Георгиевич Михаил Леонов Geological Institute of the Russian Academy of Sciences, 7, Pyzhevsky per., Moscow, 119017, Russian Federation
  • Евгений Станиславович Пржиялговский Geological Institute of the Russian Academy of Sciences, 7, Pyzhevsky per., Moscow, 119017, Russian Federation
  • Владислав Юрьевич Баталев Research Station of the Russian Academy of Sciences Bishkek-city, Bishkek-49, 720049, Kyrgyzstan
  • Елена Анатольевна Баталева Research Station of the Russian Academy of Sciences Bishkek-city, Bishkek-49, 720049, Kyrgyzstan https://orcid.org/0000-0002-0279-7469
  • Виталий Евгеньевич Матюков Research Station of the Russian Academy of Sciences, Bishkek-city, Bishkek-49, 720049, Kyrgyzstan
  • Екатерина Васильевна Лаврушина Geological Institute of the Russian Academy of Sciences, 7, Pyzhevsky per., Moscow, 119017, Russian Federation
  • Ольга Борисовна Забинякова Research Station of the Russian Academy of Sciences, Bishkek-city, Bishkek-49, 720049, Kyrgyzstan
  • Геннадий Григорьевич Щелочков Research Station of the Russian Academy of Sciences, Bishkek-city, Bishkek-49, 720049, Kyrgyzstan

DOI:

https://doi.org/10.21638/spbu07.2018.405

Abstract

Structural-morphological ensembles of different ranks for Pamir - Tien Shan segment of Central Asia and their possible correlation with the data of remote geophysical investigations are considered in the paper. Results of such correlation analysis are discussed. A bright example of the morphostructures of cross-regional scale on the territory of the Eurasian continent are the mountain systems of the Pamirs and the Tien Shan, historically, structurally and geologically two different provinces which differ in configuration, internal structure and features of evolution and orogenesis. The paper presents the results of a comprehensive study of the deep structure of the lithosphere of the southern Tien Shan and the Pamirs along the TIPAGE profile. The analysis of the geophysical inhomogeneities distribution of the profile section shows that the deep structure of the southern Tien Shan differs significantly from that of the Pamirs. The orphostructures of the regional scale and their reflection in the detailed magnetotelluric sounding data are considered on the basis of the results of geological and geophysical study of the Tien Shan tectonic zones: Kochkor Basin and Naryn Basin-Baibichetoo-Atbashi Basin. The study reveals a good correlation between the surface structure determined by geomorphological and structural methods and the deep geoelectric section, built on the high-resolution magnetotelluric sounding data. The paper also considers examples of morphostructures of local-regional scale, meso- and micro-scales, identified by the authors of the paper within the study of the structural features of tectonic blocks and rock mass of the Northern Tien Shan. All examples of surface and deep structures correlation presented in the paper demonstrate the paragenetic uniformity of different-scale tectonic structures revealed by geological and geophysical methods within large and tectonically homogeneous segments of the Tien Shan and Pamir crust.

Keywords:

upper crust structural and morphological ensembles, deep magnetotelluric sounding, geophysical model, seismicity, geodynamics, Tien Shan, Pamir

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References

Литература

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2019-02-28

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Рыбин, А. К. (2019) “Upper crust structural and morphological ensembles of the Pamir-Tien Shan segment of Central Asia and their reflection in geophysical fields”, Vestnik of Saint Petersburg University. Earth Sciences, 63(4), pp. 478–501. doi: 10.21638/spbu07.2018.405.

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Vol. 63 No. 4 (2018)

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Articles of "Vestnik of Saint Petersburg University. Earth Sciences" are open access distributed under the terms of the License Agreement with Saint Petersburg State University, which permits to the authors unrestricted distribution and self-archiving free of charge.

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