THREE MAIN CYCLES IN THE HISTORY OF A GEOMORPHOLOGICAL STAGE OF THE EARTH'S DEVELOPMENT

Abstract

The progress achieves in the study of geomorphological peculiarities of the territory of the USSR and other countries makes it possible to detail a general notion of geomorphological stage in the development of the Earth (Mesozoi-Cenozoi), which was put forward five years ago. Of the three macrocycles, composing the geomorphologicalstage. the earliest one was characterized by the formation of a basal planation surface of the global peneplain. The macrocycl (2) characterized by the formation of a denudational storey relief (geomorphological levels) was associated witn the most recent tectonic movements. The macrocycle (3) of a terrace geomorphological development was connected with the glaciation and considerable fluctuations of the level of the world ocean in the Quaternary Period.