Abstract
Based on the data of the relief analysis and the geophysical fields, major submeridional and NW-trending hidden faults are detected in the Priamurye region. The seismic energy calculations are performed for the instrumental observation period given the historical events. The faults showing the highest seismic activity are revealed. The seismic energy released by hidden faults is commensurable with a similar value obtained for the seismoactive faults detected from the geological data.
Highlights
The issues related to the construction of geodynamic models dealing with the formation and detection of mineral deposits of various types lead to the detection of hidden faults
Hidden faults are frequently discovered due to lack of the relationship between large earthquakes and the faults identified from the geological data and their intersection areas or the arrangement of seismoactive zones and seismic energy characteristics in the opposite direction with respect to that revealed at the fault surface
The sketch-maps of fault tectonics of the Priamurye region show predominance of the NE-trending faults which is linked to high activity of the Tan-Lu Fault System during the Mesozoic-Cenozoic [2] (Fig. 1)
Summary
The issues related to the construction of geodynamic models dealing with the formation and detection of mineral deposits of various types lead to the detection of hidden faults. Hidden faults are frequently discovered due to lack of the relationship between large earthquakes and the faults identified from the geological data and their intersection areas or the arrangement of seismoactive zones and seismic energy characteristics in the opposite direction with respect to that revealed at the fault surface. We needed to summarize the geological-geophysical data in order to detect and trace the major faults, and to estimate their seismic activity.
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