SEISMOTECTONICS OF THE BAIKAL RIFT AND ITS MOUNTAINOUS SURROUNDINGS
V.V. Nikolaev† and R.M. Semenov
Institute of the Earth's Crust, Siberian Branch of the RAS, 128 ul. Lermontova, Irkutsk, 664033, Russia
Keywords: Geomorphic structures, active faults, lithospheric block, earthquake source, seismic activity, earthquake mechanisms, earthquake magnitude
Pages: 598-604
Abstract
The Baikal rift is an active seismic region, as many continental rifts. Its high seismicity is associated with ongoing synrift tectonism with faulting of various geometries in rift basins and on rift ridges, under the effect of the ESE motion of the Transbaikalian block. In the suggested seismotectonic map of Siberia and the Russian Far East, the rift borders stand out against the almost aseismic Siberian craton, the moderately seismic Aldan-Okhotsk and Transbaikalian regions, and highly seismic North Mongolia and Baikal rift basins.
|
