GEOPHYSICS

On the three stages of the Earth's tectonic evolution

O. G. Sorokhtin^a, S. A. Ushakov<sup>b

a</sup> P. P. Shirshov Institute of Oceanology, Moscow
^b Lomonosov Moscow State University

UDC: 550.331

Presented: A. S. Alekseev
Received: 27.12.1988