The Dnieper-Donets hot belt
© Yu.P. Orovetskiy, V.P. Kobolev, L.T. Kalyuzhnaya
The problem of hot belts of the Earth was stated for the first time at the Institute of Geophysics NAS of Ukraine in 1994. Its base is the same as for the case of lithosphere plate tectonics. It is the well-known postulate of temporal shift of the ancient magnetic poles. But in contrast to this case spatial location of automatically related to them paleomagnetic equators is being analyzed in the problem of hot belts. As far as they intersect the major part of tectonic structures it promotes more geoinformation. Riftogenic cause of paleomagnetic equators and rooting of deep-seated multi-magmatogenes of mantle diapirs or plumes along tectonically released zone of rifto-gene has been shown statistically. This vector magmatism is crucial for hot belts of the Earth. Prevailing majority of Proterozoic paleomagnetic equators are coaxial with synchronous riftogenes on the continents and with riftogenalias of the middle-oceanic ridges. This fact determines not only a rotational nature of the last ones but also more ancient age of their initial stage of formation than it is accepted at the time being. That is why a question arises of primary Proterozoic riftogenic divisibility which is common for both oceanic and continental Earth's crust. With paleomagnetic equator being analyzed a riftogene of hot belt Grenwill (North America) and riftogenalia East-Pacific, Central-Indian and Arabian-Indian (Karlbergian) are spatially conjugated. On the Eurasian continent it causes the initial stage of formation of Proterozoic Dnieper-Donets hot belt of the Earth which consists of the Prypyat riftogene, Dnieper-Donets paleorift and Folded Donbass riftogene. Its further strike in southeastern direction is controlled by the Dnieper-Tien Shan or the Sarmatian-Turanian lineament. <<back |
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