ABSTRACT
Ancient philosophers believed that in the course of Earth's formation its rotation resulted in the separation of matter: heavy particles went to the center, whereas lighter ones remained at the periphery. Similar processes, in their opinion, took place in the cosmos. Accordingly, the mechanism of Earth formation from cosmic matter determined its chemical composition and the primary distribution of chemical elements among the geospheres. The structure of Earth and distribution of its intensive parameters result from the mechanism of its formation and subsequent geological events. The energy of geological processes in general and geochemical ones in particular is supplied from internal and external sources. The external sources of terrestrial energy are solar radiation, cosmic rays, and tidal friction. Energy is transferred from the Earth's interior to the surface mainly due to convection-induced global circulation of hot mantle matter.
