Abstract
The paper presents the results of long-term geological-geophysical studies of the author, which have a direct relationship to the structure and development of the sources of the strong earthquakes that occurred on the territory of Mongolia and the Baikal rift zone. They left imprints in the form of seismic dislocations in the near-surface layers or in the form of thermally treated rocks (pseudo-tachylites), considered as evidence of the manifestation of seismogenic motions in the segments of seismoactive faults at depths of 10–20 km. It was revealed that in the regions of the manifestation of denudation shear on the Earth’s surface with a length of many kilometers it is possible to identify the deep fragments of faults, in which previously the signs of rapid seismogenic motions along the faults had been manifested. Such deep fragments are revealed from the presence of friction planes, covered by the finest glass films, which arose under the strong frictional heating of rocks before the stage of melting. In this way, the possibility of studying such sections of zones of seismo-generating faults is validated, considering them as deep fragments of earthquake sources, which occurred many million years ago.
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