Block and key lithospheric structure of the active Asian north-eastern continental margin. Koryak-Kamchatka region

Abstract

The abstract presents the system of NW faults determining longitudinal zonation of regional geo-structures on the North-East Asia active margin. They defined linear and nested volcanogenic rocks of NW and SE Koryak orogenic belts and their association with ore regions. Transverse faults resulted in possible near-vertical dipping or uplifting of marginal geo-structures. Longitudinal-axial faults are zones of maximum geodynamic stresses arising in troughs of down-horizons’ layers and in curves of convex horizon’s layers. Vertical seismogenic columns with hypocenters of strong (M > 6,6) earthquakes of the Koryak seismic belt are formed on their junction with deep boundaries of multi-aged marine terrains.