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Book Chapter

Recent strike-slip deformation of the northern Tien Shan

By
M. M. Buslov
M. M. Buslov
1
United Institute of Geology, Geophysics and Mineralogy SB RAS Koptyuga ave. 3, Novosibirsk-90, 630090, Russia (misha@uiggm.nsc.ru)
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J. Klerkx
J. Klerkx
2
International Bureau for Environmental Studies Brussels, Belgium
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K. Abdrakhmatov
K. Abdrakhmatov
3
Institute of Seismology, Kyrgyzstan National Academy of Science Bishkek, Kyrgyzstan
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D. Delvaux
D. Delvaux
4
ISES Research Fellow, Earth Sciences, Vrije Universiteit Amsterdam The Netherlands
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V. Yu. Batalev
V. Yu. Batalev
5
United Institute of High Temperatures (IVTAN) RAS Bishkek, Kyrgyzstan
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O. A. Kuchai
O. A. Kuchai
1
United Institute of Geology, Geophysics and Mineralogy SB RAS Koptyuga ave. 3, Novosibirsk-90, 630090, Russia (misha@uiggm.nsc.ru)
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B. Dehandschutter
B. Dehandschutter
6
Catholic University of Leuven Leuven, Belguim
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A. Muraliev
A. Muraliev
3
Institute of Seismology, Kyrgyzstan National Academy of Science Bishkek, Kyrgyzstan
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Published:
January 01, 2003

Abstract

The paper presents a geodynamic interpretation of the deep structure and active tectonics of the northern Tien Shan, with particular emphasis on strike-slip motions, which produced a pull-apart in the centre of the Issyk-Kul basin. The study is based on a detailed interpretation of satellite imagery, fault plane solutions of earthquakes, seismic, and geodetic data.

Seismic and magnetotelluric studies show tectonic layering of the Tien Shan lithosphere, with several nearly horizontal viscoelastic layers and the lower layer underthrust northward in the northern Tien Shan. This active process may be responsible for the intricate present-day tectonic framework of the northern Tien Shan.

The recent tectonics of the northern Tien Shan inherits the earlier structure: The lens-shaped Issyk-Kul microcontinent comprising Precambrian-Palaeozoic metamorphic and magmatic rocks is surrounded by thick shear zones which have been involved in the activity over most of the Cenozoic. In the Quaternary the strain propagated as far as the central part of the Issyk-Kul basin.

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Contents

Geological Society, London, Special Publications

Intraplate Strike-Slip Deformation Belts

F. Storti
F. Storti
Università degli Studi “Roma Tre”, Rome, Italy
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R. E. Holdsworth
R. E. Holdsworth
Durham University, Durham, UK
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F. Salvini
F. Salvini
Università degli Studi “Roma Tre”, Rome, Italy
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Geological Society of London
Volume
210
ISBN electronic:
9781862394582
Publication date:
January 01, 2003

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