Nonmagnetic Deep Blocks of Earth Crust in connection with the Nodes of Traversal of Transemegablock Crustmantle Magmoactive zones

Edges of the deep magnetic blocks of the earth crust in association with section knots of transmegablock crust-mantle structurally-deformational (magmoactive) zones are perspective in kimberlite magmatism.

Non-magnetic deep blocks of the earth crust in association with section knots of transmegablock crust-mantle structurally-deformational (magmoactive) zones are perspective in kimberlite-lamproite magmatism.

Genetic and structural-genetic connections between abnormal magnetic field of the earth and its oil-and-gas content are substantiated.

On the basis of the developed maps of regional and local magnetic anomalies of the oil-and-gas basins of Ukraine, locations of the basic deep oil-and-gas monitoring fractures and fractures and oil-and-gas providing channels are substantiated, and the ways of hydrocarbons migration can be connected with it.

Petromagnetic Types of Earth Crust

By the magmatism type, size of magnetisation and yhe lithosphere structure, four petromagnetic earth crust types are singled out.

The most widespread mafic and sialmafic types, which are characterised by the basic magmatism and high magnetisation values, are considered to be the structures of extension modes. Areas of primordial continental crust consolidations, rifts (paleorifts) and zones of oceanic and continental lithosphere articulation can be analogues of such structures.

Initial magmatism of the basic structure and formation of the magnetic sources is considered to date back to early stages of the large tectonomagmatic cycles, which coincide in the time relation with the periods of maximum dislocations of the Ukrainian board in width or its maximum turns.

Regions' perspectivity in minerals of magmatic, hydrothermal and pegmatite types is defined by the through lithospere structures together with corresponding conditions in earth crust.

Results of 3D Analysis of Magnetic Model of Earth Crust

3D Earth crust magnetic models with other geological-geophysical data in connection with tectonics, magmatism, metallogenic specialisation and minerals prognostication were analysed.

Magmatic formations of the basic and ultrabasic structure of pre-platform development stage of Ukrainian board, which are drawn off on the surface of crystal base, are situated mainly over deep blocks (or their edges) of the Earth crust with the raised magnetisation values;

Reduction of average magnetisation value of the materials with basic and ultrabasic structure along with the reduction of their formation age is discovered, and the maximum magnetisation of crust bottoms of archaic Podolsky, Buzhsky, and partially Serednyoprydniprovsky megablocks and the West Priazovsky block, its smaller intensity in the Volynsky megablock and practically not magnetic bottom crust of the platform activization areas is connected with it.