E.G. Mirlin1, M.V. Kononov2, Yu.V. Mironov1

1Vernadsky State Geological Museum of the Russian Academy of Sciences, Moscow, 125009
2Shirshov Institute of Oceanology of the Russian Academy of Sciences, Moscow, 117997

Geological-geophysical materials on most in detailed studied trap provinces which connected with evolution of oceanic forming whirling rift-spreading systems of tectonosphere are analysed. The primary magmatic centres are formed as in the field of their greatest whirling (provinces of Northern Atlantic, East African and Deccan), also near of the continental margin ledges which formation is connected with whirls (Parana-Etendeka). Specific character of movements of the given pattern is change of geodynamic conditions from a tension (with shear) to compression (with shear) in each point of a accretion zone of lithosphere, and the gradient of transition from compression to a tension increases in process of a whirling of whirl system. According to offered model, the primary magmatic centres appears as a result of dissipation of energy in the nonequilibrium nonlinear environment owing to influences on it, due to specific character of the whirling motion of lithosphere.

Keywords: trap mechanism, whirling motion, tectonosphere, magma chamber, nonlinear environment