Geophysical Journal | 2014 volume 36 1

Magnetic data, fault tectonics of consolidated earth crust and oil-and-gas content of the Dnieper-Donets avlakogen

© I.K. Pashkevich, M.I. Orlyuk, T.V. Lebed, 2014

Main perspectives to find oil-and gas deposits into crystal foundation and lower parts of sedimentary cover are related to the deep ruptures of different categories, to its crossings as well as to the presence of decompression and fracturing zones in it. In the article anomal magnetic field (AT)a, its regional and local components as well as developed 3D magnetic model together with magmatism and fault tectonics scheme of Dnieper-Donets Aulacogene have been analyzed. On the basis of complex analysis and interpretation of obtained data the Earth's crust deep structure have been defined and eventual migration ways to the places of deep hydrocarbons agglomeration have been considered. That interpretation allowed to specify found hydrocarbons inflow locations in the Earth's crust of DDA as well as to indicate the new prospective ones. It also permitted to formulate regional geomagnetic signs oil-and-gas content in foundation and to identify probability to replenish the deposits of sedimentary cover by deep hydrocarbons. It has been defined that decompression and fracturing zones of sedimentary basins foundation located over deep magnetic blocks of DDA consolidated crust may be potentially gas-bearing while weekly magnetic zone of the Earth's crust among strongly magnetic blocks of Chernigiv and Lohvitsa segments is potentially oil-bearing.

Key words: migration paths of hydrocarbons, fault-block tectonics, magnetic heteroge neities, oil and gas provinces, segments.

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