ABSTRACT

Theoretical studies concerning the problem of mantle diapirism, examine the conditions of origin and formation of these gigantic magmatic structures against the background of a palingenic-segregation model. Its principle is essentially based on the absence of temperature difference in the asthenosphere at the level of magma generation, between surrounding rocks and the magma generated by them, which envisages a constant presence of magmatic fluids. The Moho boundary is located at a depth of about 40 km, which is approximately 10 km more than in geosynclinal regions. The anomalous gravity field the eastern part is represented by a maximum changing westwards at the centre of the structure into a flat minimum. The eastern edge of the Kirovograd protoplatform massif comprises a zone of domal structures of the West-Ingulets belt. The transition zone of domal structures of Belotserkov-Odessy geosynclinal branch is considered an analogue of the West-Ingulets belt.