HOLOCENE DEFORMATION IN THE WESTERN END OF THE TUNKA SYSTEM OF RIFT BASINS (Southwestern Baikal Rift)
A.V. Arzhannikova, C. Larroque*, and S.G. Arzhannikov
Institute of the Earth's Crust, Siberian Branch of the RAS, 128 ul. Lermontova, Irkutsk, 664 033, Russia
*Geosciences Azur CNRS UMR Scientific Affiliation, Valbonne, 6526, France
Keywords: Tectonic deformation, fault kinematics, earthquake, strain field
Pages: 361-367
Subsection: TECTONICS
Abstract
We investigate the fault geometry and kinematics of Holocene active compressional structures in the Mondy basin and its surroundings (western termination of the Tunka system of rift basins) and continue the discussion on the M = 7 Mondy earthquake of 4 April 1950. The Holocene reverse-oblique motions along the W-E trending Mondy and Ikh-Ukhgon faults are interpreted in the context of the Late Cenozoic evolution of a flower structure, on the basis of deciphered digital SPOT (10 m resolution) and Landsat (30 m resolution) imagery and field geomorphological measurements.
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