Geological and Geophysical Deep Structure Researches of Northern Eurasia in the Zone-block Model of the Earth's Crust

Abstract

Summary Investigations of the deep crustal structure of the continents and their passive margins along the supporting geophysical profiles, within the framework of small-scale geological mapping and regional studies of large economic geologic regions, based on the broad base of regional geophysical surveys, opening way to development schemes, maps and sections of the new type. Solution of the incompatibility problem of heterogeneous geophysical information and improve the reliability of interpretation constructs seen in the postulation of several key positions: a) deep crustal section are documents tectonic content; b) the deep cuts seen as components of a three-dimensional model of the region geotectonic research; c) the interpretation of the geophysical data is within the “zone-block geophysical models of the Earth’s crust”, the main elements of which are the blocks (paleoplity) with the ancient seismically layered continental crust, manifesting as the stationary regions calculated seismic, geoelectric, gravimetric, magnetometric, geothermal parameters and sharing their interblock sutures structure (tension, compression and fault) - gradient zones of geophysical fields. In this methodology, performed mapping the deep structure of consolidated basement and platform cover of the continental territory of Russia, an extensive system of deep sections of the Earth’s crust along the profile of the regional DSS-ECWM, DRS-CDP, MTZ.