Professor of the Russian Academy of Sciences, Doctor of Geological and Mineralogical Sciences
Research interests Kirdyashkin’s research interests lie in the field of modeling deep geodynamic processes:
thermophysical (laboratory and theoretical) modeling of mantle free-convective flows and mantle thermochemical plumes. Much of the research is devoted to determining the regime of lower mantle convective flows, the thermal and hydrodynamic structure of lower and upper mantle flows, and the temperature distribution in the upper and lower mantle. The second research area is represented by laboratory and theoretical modeling of mantle thermochemical plumes in order to determine the thermal and hydrodynamic structure of the plume.
Depending on the thermal capacity, the following plumes are distinguished: plumes that have not reached the surface and are responsible for the formation of uplifts, plumes of intermediate thickness (diamond-bearing), plumes with a mushroom-shaped head responsible for the formation of batholiths, and plumes of large igneous provinces. Much attention is paid to estimating the parameters of the plumes of Northern Asia using geological data. Studies of plumes in the subduction zone are developing. Based on experimental and theoretical modeling, the thermal and hydrodynamic structure of the subduction zone is presented. The possibility of melting of the crustal layer of the subducting plate at the boundary of 670 km is shown. A model of a subduction thermochemical plume is proposed and the hydrodynamic structure of the melt in its channel is presented.
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