TY JOUR TI Assessment of geodynamic stability of the Earth's geospheres KW Earth KW density KW temperature KW geosphere KW continental and oceanic crust KW upper mantle KW lower mantle KW core KW four-layer core model JO Vestnik of geosciences AU Kokin, A.V. AU Kokin, A.A. PY 2024 IS 0 PB FSBI FIC "Komi Scientific Center of the Ural Branch of the Russian Academy of Sciences"